JP7552015B2 - Liquid ejection device - Google Patents

Description

The present invention relates to a liquid ejection device.

Patent Document 1 describes, as an example of a liquid ejection device, a recording device that includes an ejection section that ejects liquid and a storage section that stores the liquid. The recording device has a transparent cover that allows the remaining amount of liquid stored in the storage section to be visually confirmed. In the recording device, the remaining amount of liquid can be ascertained by looking inside the storage section through the transparent cover.

JP 2018-1446 A

In the recording device described in Patent Document 1, if the surroundings are dark, there is a risk that it will be difficult to determine the remaining amount of liquid contained in the container.

A liquid ejection device that solves the above problem includes an ejection unit that ejects liquid, a storage unit that stores the liquid to be supplied to the ejection unit, a light-emitting unit that emits light, and a control unit that causes the light-emitting unit to emit light in a light emission pattern that corresponds to the remaining amount of liquid stored in the storage unit.

FIG. 1 is a perspective view of a liquid ejection device according to a first embodiment. FIG. 2 is a front view of the liquid ejection device shown in FIG. FIG. 2 is a side view of the liquid ejection device shown in FIG. FIG. 4 is a partial cross-sectional view taken along line 4-4 in FIG. 2 . FIG. 13 is a flowchart showing a notification process. FIG. 4 is a perspective view showing a first modified example of the liquid ejection device in the first embodiment. FIG. 11 is a perspective view showing a second modified example of the liquid ejection device in the first embodiment. FIG. 11 is a perspective view showing a third modified example of the liquid ejection device in the first embodiment. FIG. 11 is a perspective view showing a fourth modified example of the liquid ejection device in the first embodiment. FIG. 13 is a perspective view showing a fifth modified example of the liquid ejection device in the first embodiment. FIG. 13 is a perspective view showing a sixth modified example of the liquid ejection device in the first embodiment. 1A to 1E are diagrams showing modified examples of the visibility cover in the first embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, (d) is a front view showing a fourth modified example, and (e) is a front view showing a fifth modified example. 1A to 1E are diagrams showing modified examples of the light-guiding member in the first embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, (d) is a front view showing a fourth modified example, and (e) is a front view showing a fifth modified example. 1A and 1B are diagrams showing modified examples of the viewing section and the light-guiding member in the first embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, (d) is a front view showing a fourth modified example, (e) is a front view showing a fifth modified example, (f) is a front view showing a sixth modified example, (g) is a front view showing a seventh modified example, (h) is a front view showing an eighth modified example, (i) is a front view showing a ninth modified example, and (j) is a front view showing a tenth modified example. FIG. 11 is a perspective view of a liquid ejection device according to a second embodiment. FIG. 13 is a front view of a visual recognition portion and a light guiding member according to a second embodiment. FIG. 13 is a perspective view showing a first modified example of the liquid ejection device according to the second embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in the second embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. 13A and 13B are diagrams showing modified examples of the visualizing unit and the light guiding member in the second embodiment, in which FIG. 13A is a front view showing a first modified example, and FIG. 13B is a front view showing a second modified example. FIG. 13 is a perspective view of a liquid ejection device according to a third embodiment. FIG. 13 is a front view of a visual recognition portion and a light guiding member according to a third embodiment. FIG. 13 is a perspective view showing a first modified example of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a second modified example of the liquid ejection device according to the third embodiment. FIG. 25 is a perspective view seen from an angle different from that of FIG. 24 . FIG. 13 is a perspective view showing a third modified example of the liquid ejection device according to the third embodiment. FIG. 27 is a perspective view seen from an angle different from that of FIG. 26 . FIG. 13 is a perspective view showing a fourth modified example of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a fifth modified example of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a sixth modified example of the liquid ejection device according to the third embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in the third embodiment, in which FIG. 13A is a front view showing a first modified example, and FIG. 13B is a front view showing a second modified example. 13A and 13B are diagrams illustrating modified examples of the light guide member in the third embodiment, in which FIG. 13A is a front view illustrating a first modified example, and FIG. 13B is a front view illustrating a second modified example. FIG. 13 is a front view showing a modified example of the visualizing portion and the light guiding member in the third embodiment. FIG. 13 is a perspective view of a liquid ejection device according to a fourth embodiment. FIG. 13 is a front view of a visual recognition portion and a light guiding member in a fourth embodiment. FIG. 13 is a perspective view showing a first modified example of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a second modified example of the liquid ejection device according to the fourth embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in the fourth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, and (d) is a front view showing a fourth modified example. 13A to 13D are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, and (d) is a front view showing a fourth modified example. 13A and 13B are diagrams showing modified examples of the visualizing section and the light-guiding member in the fourth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. FIG. 13 is a perspective view of a liquid ejection device according to a fifth embodiment. FIG. 13 is a front view of a visual recognition portion and a light guiding member in a fifth embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in the fifth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, and (d) is a front view showing a fourth modified example. 13A and 13B are diagrams showing modified examples of the visualizing section and the light-guiding member in the fifth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. FIG. 13 is a perspective view of a liquid ejection device according to a sixth embodiment. FIG. 23 is a front view of a visual recognition portion and a light guiding member in the sixth embodiment. FIG. 23 is a perspective view showing a first modified example of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a second modified example of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a third modified example of the liquid ejection device according to the sixth embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in the sixth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. 13A and 13B are diagrams showing modified examples of the visualizing section and the light-guiding member in the sixth embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. FIG. 13 is a perspective view of a liquid ejection device according to a seventh embodiment. FIG. 53 is a front view of the liquid ejection device shown in FIG. 52 . FIG. 23 is a front view of a visual recognition portion and a light guiding member in the seventh embodiment. A partial cross-sectional view taken along line 55-55 in Figure 53. A partial cross-sectional view taken along line 56-56 in Figure 53. FIG. 23 is a perspective view showing a first modified example of the liquid ejection device according to the seventh embodiment. FIG. 58 is a front view of the liquid ejection device shown in FIG. 57. FIG. 23 is a perspective view showing a second modified example of the liquid ejection device according to the seventh embodiment. FIG. 60 is a front view of the liquid ejection device shown in FIG. 59. FIG. 23 is a perspective view showing a third modified example of the liquid ejection device according to the seventh embodiment. FIG. 62 is a front view of the liquid ejection device shown in FIG. 61 . 13A to 13D are diagrams showing modified examples of the visibility cover in the seventh embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, and (d) is a front view showing a fourth modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the seventh embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, and (c) is a front view showing a third modified example. FIG. 13 is a perspective view showing a seventh modification of the liquid ejection device according to the first embodiment. FIG. 13 is a perspective view showing an eighth modification of the liquid ejection device according to the first embodiment. 11A and 11B are diagrams showing modified examples of the visibility cover in the first embodiment, where (a) is a front view showing a sixth modified example, (b) is a front view showing a seventh modified example, (c) is a front view showing an eighth modified example, (d) is a front view showing a ninth modified example, and (e) is a front view showing a tenth modified example. 13A to 13J are diagrams showing modified examples of the light-guiding member in the first embodiment, where (a) is a front view showing a sixth modified example, (b) is a front view showing a seventh modified example, (c) is a front view showing an eighth modified example, (d) is a front view showing a ninth modified example, (e) is a front view showing a tenth modified example, (f) is a front view showing an eleventh modified example, (g) is a front view showing a twelfth modified example, (h) is a front view showing a thirteenth modified example, (i) is a front view showing a fourteenth modified example, and (j) is a front view showing a fifteenth modified example. 13A to 13C are diagrams showing modified examples of the light-guiding member in the first embodiment, where (a) is a front view showing a 16th modified example, (b) is a front view showing a 17th modified example, (c) is a front view showing an 18th modified example, (d) is a front view showing a 19th modified example, (e) is a front view showing a 20th modified example, (f) is a front view showing a 21st modified example, (g) is a front view showing a 22nd modified example, (h) is a front view showing a 23rd modified example, (i) is a front view showing a 24th modified example, and (j) is a front view showing a 25th modified example. 11A and 11B are diagrams showing modified examples of the light-guiding member in the first embodiment, where (a) is a front view showing the 26th modified example, (b) is a front view showing the 27th modified example, (c) is a front view showing the 28th modified example, (d) is a front view showing the 29th modified example, (e) is a front view showing the 30th modified example, (f) is a front view showing the 31st modified example, (g) is a front view showing the 32nd modified example, (h) is a front view showing the 33rd modified example, (i) is a front view showing the 34th modified example, and (j) is a front view showing the 35th modified example. 11A to 11E are diagrams showing modified examples of the light-guiding member in the first embodiment, where (a) is a front view showing a 36th modified example, (b) is a front view showing a 37th modified example, (c) is a front view showing a 38th modified example, (d) is a front view showing a 39th modified example, and (e) is a front view showing a 40th modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the first embodiment, where (a) is a front view showing an 11th modified example, (b) is a front view showing a 12th modified example, (c) is a front view showing a 13th modified example, (d) is a front view showing a 14th modified example, (e) is a front view showing a 15th modified example, (f) is a front view showing a 16th modified example, (g) is a front view showing a 17th modified example, (h) is a front view showing an 18th modified example, (i) is a front view showing a 19th modified example, and (j) is a front view showing a 20th modified example. 11A and 11B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the first embodiment, where (a) is a front view showing a 21st modified example, (b) is a front view showing a 22nd modified example, (c) is a front view showing a 23rd modified example, (d) is a front view showing a 24th modified example, (e) is a front view showing a 25th modified example, (f) is a front view showing a 26th modified example, and (g) is a front view showing a 27th modified example. 13A to 13C are diagrams showing modified examples of the visualizing portion and the light-guiding member in the first embodiment, where (a) is a front view showing the 28th modified example, (b) is a front view showing the 29th modified example, (c) is a front view showing the 30th modified example, (d) is a front view showing the 31st modified example, (e) is a front view showing the 32nd modified example, (f) is a front view showing the 33rd modified example, (g) is a front view showing the 34th modified example, and (h) is a front view showing the 35th modified example. 11A and 11B are diagrams showing modified examples of the visibility cover in the second embodiment, where (a) is a front view showing a fourth modified example, (b) is a front view showing a fifth modified example, (c) is a front view showing a sixth modified example, (d) is a front view showing a seventh modified example, (e) is a front view showing an eighth modified example, and (f) is a front view showing a ninth modified example. 11A and 11B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the second embodiment, where (a) is a front view showing a third modified example, (b) is a front view showing a fourth modified example, (c) is a front view showing a fifth modified example, (d) is a front view showing a sixth modified example, (e) is a front view showing a seventh modified example, and (f) is a front view showing an eighth modified example. FIG. 13 is a perspective view showing a seventh modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing an eighth modification of the liquid ejection device according to the third embodiment. An oblique view seen from an angle different from that of Figure 78. FIG. 13 is a perspective view showing a ninth modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a tenth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing an eleventh modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a twelfth modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a thirteenth modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a fourteenth modification of the liquid ejection device according to the third embodiment. FIG. 15 is a perspective view showing a fifteenth modification of the liquid ejection device according to the third embodiment. FIG. 19 is a perspective view showing a sixteenth modification of the liquid ejection device according to the third embodiment. FIG. 19 is a perspective view showing a seventeenth modification of the liquid ejection device according to the third embodiment. FIG. 19 is a perspective view showing an eighteenth modification of the liquid ejection device according to the third embodiment. FIG. 19 is a perspective view showing a nineteenth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a twentieth modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a twenty-first modified example of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a twenty-second modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a twenty-third modification of the liquid ejection device according to the third embodiment. FIG. 23 is a perspective view showing a twenty-fourth modification of the liquid ejection device according to the third embodiment. FIG. 25 is a perspective view showing a twenty-fifth modification of the liquid ejection device according to the third embodiment. FIG. 26 is a perspective view showing a twenty-sixth modification of the liquid ejection device according to the third embodiment. FIG. 27 is a perspective view showing a twenty-seventh modification of the liquid ejection device according to the third embodiment. FIG. 28 is a perspective view showing a twenty-eighth modification of the liquid ejection device according to the third embodiment. FIG. 29 is a perspective view showing a twenty-ninth modification of the liquid ejection device according to the third embodiment. 11A and 11B are diagrams showing modified examples of the visibility cover in the third embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, and (d) is a front view showing a fourth modified example. 13A to 13F are diagrams showing modified examples of the light-guiding member in the third embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, (d) is a front view showing a fourth modified example, (e) is a front view showing a fifth modified example, and (f) is a front view showing a sixth modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the third embodiment, where (a) is a front view showing a first modified example, (b) is a front view showing a second modified example, (c) is a front view showing a third modified example, (d) is a front view showing a fourth modified example, (e) is a front view showing a fifth modified example, (f) is a front view showing a sixth modified example, (g) is a front view showing a seventh modified example, (h) is a front view showing an eighth modified example, (i) is a front view showing a ninth modified example, (j) is a front view showing a tenth modified example, and (k) is a front view showing an eleventh modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the third embodiment, where (a) is a front view showing a twelfth modified example, (b) is a front view showing a thirteenth modified example, (c) is a front view showing a fourteenth modified example, (d) is a front view showing a fifteenth modified example, (e) is a front view showing a sixteenth modified example, (f) is a front view showing a seventeenth modified example, (g) is a front view showing an eighteenth modified example, (h) is a front view showing a nineteenth modified example, (i) is a front view showing a twentieth modified example, and (j) is a front view showing a twenty-first modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the third embodiment, where (a) is a front view showing the 22nd modified example, (b) is a front view showing the 23rd modified example, (c) is a front view showing the 24th modified example, (d) is a front view showing the 25th modified example, (e) is a front view showing the 26th modified example, (f) is a front view showing the 27th modified example, (g) is a front view showing the 28th modified example, (h) is a front view showing the 29th modified example, (i) is a front view showing the 30th modified example, and (j) is a front view showing the 31st modified example. FIG. 13 is a front view showing a fifth modified example of the visibility cover in the fourth embodiment. 13A to 13C are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing a fifth modified example, (b) is a front view showing a sixth modified example, (c) is a front view showing a seventh modified example, (d) is a front view showing an eighth modified example, (e) is a front view showing a ninth modified example, (f) is a front view showing a tenth modified example, (g) is a front view showing an eleventh modified example, (h) is a front view showing a twelfth modified example, and (i) is a front view showing a thirteenth modified example. 13A to 13C are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing a 14th modified example, (b) is a front view showing a 15th modified example, (c) is a front view showing a 16th modified example, (d) is a front view showing a 17th modified example, (e) is a front view showing an 18th modified example, (f) is a front view showing a 19th modified example, (g) is a front view showing a 20th modified example, (h) is a front view showing a 21st modified example, (i) is a front view showing a 22nd modified example, and (j) is a front view showing a 23rd modified example. 13A and 13B are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing the 24th modified example, (b) is a front view showing the 25th modified example, (c) is a front view showing the 26th modified example, (d) is a front view showing the 27th modified example, (e) is a front view showing the 28th modified example, (f) is a front view showing the 29th modified example, (g) is a front view showing the 30th modified example, (h) is a front view showing the 31st modified example, (i) is a front view showing the 32nd modified example, (j) is a front view showing the 33rd modified example, (k) is a front view showing the 34th modified example, (l) is a front view showing the 35th modified example, and (m) is a front view showing the 36th modified example. 13A and 13B are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing the 37th modified example, (b) is a front view showing the 38th modified example, (c) is a front view showing the 39th modified example, (d) is a front view showing the 40th modified example, (e) is a front view showing the 41st modified example, (f) is a front view showing the 42nd modified example, (g) is a front view showing the 43rd modified example, (h) is a front view showing the 44th modified example, (i) is a front view showing the 45th modified example, (j) is a front view showing the 46th modified example, (k) is a front view showing the 47th modified example, and (l) is a front view showing the 48th modified example. 13A to 13C are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing the 49th modified example, (b) is a front view showing the 50th modified example, (c) is a front view showing the 51st modified example, (d) is a front view showing the 52nd modified example, (e) is a front view showing the 53rd modified example, (f) is a front view showing the 54th modified example, (g) is a front view showing the 55th modified example, (h) is a front view showing the 56th modified example, (i) is a front view showing the 57th modified example, (j) is a front view showing the 58th modified example, and (k) is a front view showing the 59th modified example. 13A and 13B are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing the 60th modified example, (b) is a front view showing the 61st modified example, (c) is a front view showing the 62nd modified example, (d) is a front view showing the 63rd modified example, (e) is a front view showing the 64th modified example, (f) is a front view showing the 65th modified example, (g) is a front view showing the 66th modified example, and (h) is a front view showing the 67th modified example. 13A to 13E are diagrams showing modified examples of the light-guiding member in the fourth embodiment, where (a) is a front view showing a 68th modified example, (b) is a front view showing a 69th modified example, (c) is a front view showing a 70th modified example, (d) is a front view showing a 71st modified example, and (e) is a front view showing a 72nd modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the fourth embodiment, where (a) is a front view showing the fourth modified example, (b) is a front view showing the fifth modified example, (c) is a front view showing the sixth modified example, (d) is a front view showing the seventh modified example, (e) is a front view showing the eighth modified example, (f) is a front view showing the ninth modified example, (g) is a front view showing the tenth modified example, (h) is a front view showing the eleventh modified example, (i) is a front view showing the twelfth modified example, (j) is a front view showing the thirteenth modified example, (k) is a front view showing the fourteenth modified example, (l) is a front view showing the fifteenth modified example, and (m) is a front view showing the sixteenth modified example. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the fourth embodiment, where (a) is a front view showing a 17th modified example, (b) is a front view showing an 18th modified example, (c) is a front view showing a 19th modified example, (d) is a front view showing a 20th modified example, (e) is a front view showing a 21st modified example, (f) is a front view showing a 22nd modified example, (g) is a front view showing a 23rd modified example, (h) is a front view showing a 24th modified example, (i) is a front view showing a 25th modified example, and (j) is a front view showing a 26th modified example. FIG. 13 is a front view showing a fifth modified example of the visibility cover in the fifth embodiment. FIG. 23 is a front view showing a fourth modified example of the visual recognition portion and the light guiding member in the fifth embodiment. FIG. 23 is a perspective view showing a fourth modified example of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a fifth modified example of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a sixth modified example of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a seventh modification of the liquid ejection device according to the sixth embodiment. 13A and 13B are diagrams showing modified examples of the visualizing portion and the light-guiding member in the sixth embodiment, where (a) is a front view showing a fourth modified example, (b) is a front view showing a fifth modified example, (c) is a front view showing a sixth modified example, (d) is a front view showing a seventh modified example, (e) is a front view showing an eighth modified example, (f) is a front view showing a ninth modified example, (g) is a front view showing a tenth modified example, (h) is a front view showing an eleventh modified example, (i) is a front view showing a twelfth modified example, (j) is a front view showing a thirteenth modified example, (k) is a front view showing a fourteenth modified example, (l) is a front view showing a fifteenth modified example, (m) is a front view showing a sixteenth modified example, and (n) is a front view showing a seventeenth modified example. 13A and 13B are diagrams showing modified examples of the visualizing unit and the light-guiding member in the seventh embodiment, where (a) is a front view showing a fourth modified example, (b) is a front view showing a fifth modified example, (c) is a front view showing a sixth modified example, (d) is a front view showing a seventh modified example, (e) is a front view showing an eighth modified example, (f) is a front view showing a ninth modified example, (g) is a front view showing a tenth modified example, (h) is a front view showing an eleventh modified example, (i) is a front view showing a twelfth modified example, (j) is a front view showing a thirteenth modified example, (k) is a front view showing a fourteenth modified example, (l) is a front view showing a fifteenth modified example, (m) is a front view showing a sixteenth modified example, (n) is a front view showing a seventeenth modified example, (o) is a front view showing an eighteenth modified example, and (p) is a front view showing a nineteenth modified example. 13A and 13B are diagrams showing modified examples of the visualizing unit and the light-guiding member in the seventh embodiment, where (a) is a front view showing the 20th modified example, (b) is a front view showing the 21st modified example, (c) is a front view showing the 22nd modified example, (d) is a front view showing the 23rd modified example, (e) is a front view showing the 24th modified example, (f) is a front view showing the 25th modified example, (g) is a front view showing the 26th modified example, (h) is a front view showing the 27th modified example, (i) is a front view showing the 28th modified example, (j) is a front view showing the 29th modified example, (k) is a front view showing the 30th modified example, (l) is a front view showing the 31st modified example, (m) is a front view showing the 32nd modified example, (n) is a front view showing the 33rd modified example, (o) is a front view showing the 34th modified example, and (p) is a front view showing the 35th modified example. 13A to 13C are diagrams showing modified examples of the visibility cover in at least one of the first embodiment, the second embodiment, and the third embodiment. 10A to 10C are diagrams illustrating modified examples of the visual recognition unit and the light guiding member in at least one of the first to third embodiments. 10A to 10C are diagrams illustrating modified examples of the visual recognition unit and the light guiding member in at least one of the first to third embodiments. 13A and 13B are diagrams showing modified examples of the visibility cover in at least one of the fourth and fifth embodiments. 13A to 13C are diagrams illustrating modified examples of the visual recognition portion and the light guiding member in at least one of the fourth and fifth embodiments. 13A to 13C are diagrams illustrating modified examples of the visual recognition portion and the light guiding member in at least one of the fourth and fifth embodiments. FIG. 13 is a perspective view showing a ninth modification of the liquid ejection device according to the first embodiment. FIG. 23 is a perspective view showing a tenth modification of the liquid ejection device according to the first embodiment. FIG. 13 is a perspective view showing a second modified example of the liquid ejection device in the second embodiment. FIG. 13 is a perspective view showing a third modified example of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a fourth modified example of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a fifth modified example of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a sixth modified example of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a seventh modification of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a first modified example of the liquid ejection device according to the fifth embodiment. FIG. 13 is a perspective view showing a second modified example of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a third modified example of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a fourth modified example of the liquid ejection device according to the fifth embodiment. FIG. 13 is a perspective view showing a fifth modified example of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a sixth modified example of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a seventh modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing an eighth modification of the liquid ejection device according to the fifth embodiment. FIG. 13 is a perspective view showing a ninth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a tenth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing an eleventh modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a twelfth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a thirteenth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a fourteenth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a fifteenth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing a sixteenth modification of the liquid ejection device according to the fifth embodiment. FIG. 23 is a perspective view showing an eighth modification of the liquid ejection device according to the sixth embodiment. FIG. 13 is a perspective view showing a ninth modification of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a tenth modification of the liquid ejection device according to the sixth embodiment. FIG. 23 is a perspective view showing a fourth modified example of the liquid ejection device according to the seventh embodiment. FIG. 23 is a perspective view showing a fifth modified example of the liquid ejection device according to the seventh embodiment. FIG. 23 is a perspective view showing a sixth modified example of the liquid ejection device according to the seventh embodiment. FIG. 23 is a perspective view showing a seventh modification of the liquid ejection device according to the seventh embodiment. FIG. 23 is a perspective view showing an eighth modification of the liquid ejection device according to the seventh embodiment. 13A and 13B are diagrams showing modified examples of the visibility cover in at least one of the sixth and seventh embodiments. 13A to 13C are diagrams illustrating modified examples of the visual recognition portion and the light guiding member in at least one of the sixth and seventh embodiments. 13A to 13C are diagrams illustrating modified examples of the visual recognition portion and the light guiding member in at least one of the sixth and seventh embodiments. 13A to 13C are diagrams illustrating modified examples of the visual recognition portion and the light guiding member in at least one of the sixth and seventh embodiments. FIG. 13 is a perspective view showing an eighth modification of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a ninth modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a tenth modification of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing an eleventh modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a twelfth modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a thirteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a fourteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a fifteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 19 is a perspective view showing a sixteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 19 is a perspective view showing a seventeenth modification of the liquid ejection device according to the fourth embodiment. FIG. 19 is a perspective view showing an eighteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 19 is a perspective view showing a nineteenth modification of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a twentieth modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a twenty-first modified example of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a twenty-second modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a twenty-third modification of the liquid ejection device according to the fourth embodiment. FIG. 23 is a perspective view showing a twenty-fourth modification of the liquid ejection device according to the fourth embodiment. FIG. 25 is a perspective view showing a twenty-fifth modification of the liquid ejection device according to the fourth embodiment. FIG. 13 is a perspective view showing a thirtieth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-first modified example of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-second modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-third modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-fourth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-fifth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-sixth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-seventh modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-eighth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a thirty-ninth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a fortieth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a forty-first modified example of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a forty-second modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a forty-third modification of the liquid ejection device according to the third embodiment. FIG. 13 is a perspective view showing a forty-fourth modification of the liquid ejection device according to the third embodiment. FIG. 13 is a front view showing a modified example of the visibility cover in the third embodiment. FIG. 13 is a front view showing a modified example of the visualizing portion and the light guiding member in the third embodiment. FIG. 13 is a front view showing a modified example of the visualizing portion and the light guiding member in the third embodiment. FIG. 13 is a front view showing a modified example of the visualizing portion and the light guiding member in the third embodiment. FIG. 13 is a perspective view of a liquid ejection device according to an eighth embodiment. FIG. 23 is a perspective view showing a modification of the liquid ejection device according to the eighth embodiment. FIG. 23 is a perspective view showing a modification of the liquid ejection device according to the eighth embodiment. FIG. 23 is a perspective view showing a modification of the liquid ejection device according to the eighth embodiment. FIG. 23 is a perspective view showing a modification of the liquid ejection device according to the eighth embodiment. FIG. 23 is a perspective view showing a modification of the liquid ejection device according to the eighth embodiment. FIG. 13 is a diagram showing an example in which a predetermined pattern is imparted to the visibility cover.

One embodiment of a liquid ejection device will be described below with reference to the drawings. The liquid ejection device is, for example, an inkjet printer that prints images such as characters and photographs by ejecting ink, which is an example of a liquid, onto paper, which is an example of a medium. The liquid ejection device is placed on a horizontal surface.

First Embodiment
1, 2 and 3, the liquid ejection device 11 includes a housing 12, an ejection unit 13 that ejects liquid, a storage unit 14 that stores the liquid, a light-emitting unit 15 that emits light, and a control unit 16. The liquid ejection device 11 includes a display unit 17 that displays information, a cassette 18 that stores a medium 99, and a power button 38. The liquid ejection device 11 includes a liquid level sensor 19 that detects the remaining amount of liquid stored in the storage unit 14. The liquid ejection device 11 includes a light-guiding member 21 that guides the light emitted from the light-emitting unit 15.
The liquid ejection device 11 is configured to be capable of communicating with external devices such as a PC, a smartphone, etc. A user can operate the liquid ejection device 11 via the PC or the smartphone.

In the first embodiment, the housing 12 houses the discharge section 13, the storage section 14, and the light-emitting section 15. The housing 12 also houses the light-guiding member 21. The housing 12 is configured, for example, in a rectangular parallelepiped shape. The housing 12 has a front surface 12A, a top surface 12B, a first side surface 12C, a second side surface 12D, a rear surface 12E, and a bottom surface 12F.

The front surface 12A is the surface of the housing 12 that is located opposite the rear surface 12E. The top surface 12B is the surface of the housing 12 that is located opposite the bottom surface 12F. The first side surface 12C is the surface of the housing 12 that is located opposite the second side surface 12D. The first side surface 12C is the side surface that is located on the right side when the housing 12 is viewed from the front. The second side surface 12D is the side surface that is located on the left side when the housing 12 is viewed from the front.

The housing 12 has an openable/closable cover 24 and an outlet 25 through which the medium 99 is discharged. The housing 12 has a visibility portion 26 that exposes the light guide member 21 so that it can be viewed from the outside of the housing 12.
The cover 24 constitutes the upper surface 12B in the closed state. The cover 24 is closed in Figures 1, 2, and 3. When the cover 24 is opened, the inside of the housing 12 is exposed. By opening the cover 24, a user can perform maintenance on the liquid ejection device 11, such as clearing a medium jam in the housing 12 and refilling the storage unit 14 with liquid.

The discharge port 25 opens to the front surface 12A. After the medium 99 is printed inside the housing 12, it is discharged to the outside of the housing 12 through the discharge port 25. In the first embodiment, when the medium 99 is printed, it is transported inside the housing 12 from the rear surface 12E to the front surface 12A.

In the first embodiment, the viewing portion 26 is provided across the front surface 12A and the first side surface 12C. Therefore, in the first embodiment, when the liquid ejection device 11 is viewed from the front and when the liquid ejection device 11 is viewed from the right side, the user can view the light guide member 21 through the viewing portion 26.

The viewing section 26 may be provided across the front surface 12A and the second side surface 12D. For example, the viewing section 26 may be provided in a position on the housing 12 that is inverted left and right with respect to the display section 17.

By exposing the light-guiding member 21 by the viewing unit 26, the user can view the light guided by the light-guiding member 21 through the viewing unit 26. In this way, the viewing unit 26 is a functional unit that makes the light emitted from the light-emitting unit 15 visible from outside the housing 12. Through the viewing unit 26, the user can view the light emitted from the light-emitting unit 15 from outside the housing 12. The viewing unit 26 may expose the light-emitting unit 15.

In the first embodiment, the viewing portion 26 has a viewing opening 27 and a viewing cover 28 that is fitted into the viewing opening 27 .
In the first embodiment, the viewing hole 27 is open across the front surface 12A and the first side surface 12C. In the first embodiment, the viewing hole 27 is positioned so as to overlap with the light-emitting unit 15 when the liquid ejection device 11 is viewed from the front.

The visibility cover 28 is transparent or translucent. Therefore, the light emitted from the light-emitting unit 15 passes through the visibility cover 28. The visibility cover 28 is made of, for example, glass or plastic. In the first embodiment, the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C.

When the visibility cover 28 is transparent, it is preferable that the portion of the housing 12 visible through the visibility cover 28 be a dark color with low brightness. For example, the brightness of the portion of the housing 12 visible through the visibility cover 28 may be configured to be lower than the brightness of the portions other than the portion visible through the visibility cover 28, or the brightness of the entire housing 12 may be configured to be low. With such a configuration, it is possible to suppress reflection of light emitted from the light-emitting unit 15 and external light. This makes it possible to make the light-emitting unit 15 easier to view.

Furthermore, when the visibility cover 28 is made translucent, it is preferable that the color of the visibility cover 28 be a dark color with low brightness. This configuration also makes it possible to suppress reflection of the light emitted from the light-emitting unit 15 and external light. This makes it possible to make the light-emitting unit 15 easier to see. Furthermore, even when the visibility cover 28 is made translucent, the portion of the housing 12 that is visible through the visibility cover 28 may be a dark color with low brightness. In this way, it is possible to make the light-emitting unit 15 even easier to see.

The ejection unit 13 prints on the medium 99 by ejecting liquid onto the medium 99. The ejection unit 13 is, for example, a head. The ejection unit 13 ejects liquid contained in the container 14. The ejection unit 13 may be configured to scan the medium 99, or may be configured to be long across the width of the medium 99. In other words, the liquid ejection device 11 may be a serial type or a line type.

The storage unit 14 stores the liquid to be ejected by the ejection unit 13. The storage unit 14 stores one or more liquids. In the first embodiment, the storage unit 14 stores one liquid. The storage unit 14 stores, for example, black ink.

The storage unit 14 may be arranged to scan the medium 99 together with the ejection unit 13. In this case, the storage unit 14 is mounted on a carriage provided in the liquid ejection device 11. This carriage mounts the ejection unit 13 and the storage unit 14. The storage unit 14 may be fixed within the housing 12. In other words, the liquid ejection device 11 may be an on-carriage type or an off-carriage type.

The light-emitting unit 15 is, for example, a light-emitting element. In the first embodiment, the light-emitting unit 15 is an LED. The light-emitting unit 15 emits light to notify the remaining amount of liquid contained in the container 14. The light-emitting unit 15 emits light toward the outside of the housing 12. The light-emitting unit 15 emits light particularly toward the front of the housing 12. The light emitted by the light-emitting unit 15 is visible through the viewing unit 26. In the first embodiment, the light-emitting unit 15 is turned off when the liquid ejection device 11 is not powered on.

The control unit 16 controls the light-emitting unit 15. The control unit 16 causes the light-emitting unit 15 to emit light in a light-emitting pattern that corresponds to the remaining amount of liquid contained in the container 14. In the first embodiment, the control unit 16 has a first light-emitting pattern and a second light-emitting pattern.

The first light emission pattern is, for example, a light emission pattern in which the light-emitting unit 15 lights up. The second light emission pattern is, for example, a light emission pattern in which the light-emitting unit 15 blinks. In the first embodiment, the control unit 16 causes the light-emitting unit 15 to emit light in the first light emission pattern or the second light emission pattern when reporting the remaining amount of liquid contained in the storage unit 14.

In the first embodiment, the control unit 16 causes the light-emitting unit 15 to emit light in the first emission pattern when the remaining amount of liquid contained in the storage unit 14 is equal to or greater than a predetermined amount. In the first embodiment, the control unit 16 causes the light-emitting unit 15 to emit light in the second emission pattern when the remaining amount of liquid contained in the storage unit 14 is less than a predetermined amount. In other words, this predetermined amount becomes a threshold for whether the light-emitting unit 15 is caused to emit light in the first emission pattern or the second emission pattern when reporting the remaining amount of liquid. By looking at the emission pattern of the light-emitting unit 15, the user can know whether the remaining amount of liquid contained in the storage unit 14 is equal to or greater than the predetermined amount, or less than the predetermined amount.

In the first embodiment, when the remaining amount of liquid contained in the container 14 is less than a predetermined amount, the control unit 16 may shorten the blinking interval of the light-emitting unit 15 in the second light-emitting pattern as the remaining amount of liquid decreases. In this case, the control unit 16 stores, for example, a first predetermined amount that is a threshold value between the first light-emitting pattern and the second light-emitting pattern, and a second predetermined amount that is smaller than the first predetermined amount.

In the first embodiment, the control unit 16 causes the light-emitting unit 15 to blink at a first blinking interval when the remaining amount of liquid contained in the storage unit 14 is less than a first predetermined amount and equal to or greater than a second predetermined amount. The control unit 16 causes the light-emitting unit 15 to blink at a second blinking interval, which is a blinking interval shorter than the first blinking interval, when the remaining amount of liquid contained in the storage unit 14 is less than the second predetermined amount. In other words, when the light-emitting unit 15 blinks at the second blinking interval, it blinks more intensely than when it blinks at the first blinking interval. This makes it possible to notify the user that the remaining amount of liquid contained in the storage unit 14 is very little.

The control unit 16 of the first embodiment comprehensively controls the liquid ejection device 11. Therefore, the control unit 16 controls not only the light emitting unit 15 but also the ejection unit 13, the display unit 17, and the like.
The control unit 16 may be configured as a circuit including (α) one or more processors that execute various processes according to a computer program, (β) one or more dedicated hardware circuits, such as application specific integrated circuits, that execute at least some of the various processes, or (γ) a combination thereof. The processor includes a CPU and memory, such as RAM and ROM, that stores program code or instructions configured to cause the CPU to execute processes. The memory, i.e., computer-readable medium, includes any available medium that can be accessed by a general-purpose or dedicated computer.

The display unit 17 displays information related to the liquid ejection device 11. The display unit 17 is, for example, a liquid crystal screen. The display unit 17 may be a touch panel. When the display unit 17 is a touch panel, the user can operate the liquid ejection device 11 by touching the display unit 17. The display unit 17 is provided, for example, on the front surface 12A. In the first embodiment, the display unit 17 is located above the discharge port 25.

The cassette 18 is detachable from the housing 12. In the first embodiment, the cassette 18 is detachable from the front surface 12A. The cassette 18 in the first embodiment is located below the discharge port 25 when attached to the housing 12. The liquid ejection device 11 prints on the medium 99 supplied from the cassette 18 attached to the housing 12. The liquid ejection device 11 may be configured to be able to supply the medium 99 from the rear surface 12E separately from the cassette 18.

The liquid level sensor 19 is provided in the storage section 14. The liquid level sensor 19 is electrically connected to the control section 16. The liquid level sensor 19 detects the remaining amount of liquid contained in the storage section 14, and the control section 16 obtains the remaining amount of liquid.

As shown in FIG. 4, an exposed space 29 is formed in the housing 12 by the visibility cover 28. The exposed space 29 is a space in the housing 12 that is covered by the visibility cover 28 and exposes the light-guiding member 21. Therefore, the visibility cover 28 covers the light-guiding member 21.

The light-guiding member 21 is located between the light-emitting section 15 and the viewing section 26. The light-guiding member 21 is located at a position that is visible through the viewing section 26. The light-guiding member 21 is transparent or translucent. The light-guiding member 21 is made of, for example, acrylic resin. In the first embodiment, the light-guiding member 21 is an acrylic plate.

The light-guiding member 21 has a light-receiving end surface 31 that receives light emitted by the light-emitting portion 15, and an exposed end surface 32 that is exposed to the exposed space 29. In the first embodiment, the light-receiving end surface 31 is a surface of the light-guiding member 21 that faces inwardly of the housing 12. In the first embodiment, the exposed end surface 32 is a surface of the light-guiding member 21 that faces outwardly of the housing 12.

In the light-guiding member 21, when the light-receiving end surface 31 receives the light emitted from the light-emitting unit 15, the received light propagates within the light-guiding member 21. When the propagating light reaches the exposed end surface 32, the exposed end surface 32 lights up. In this manner, the light emitted from the light-emitting unit 15 is guided by the light-guiding member 21. This allows the user to visually recognize the light emitted from the light-emitting unit 15 through the light-guiding member 21. The illumination of the exposed end surface 32 increases the illuminated area compared to the case of the light-emitting unit 15 alone, making it easier for the user to visually recognize the light emitted from the light-emitting unit 15.

5 , the light guide member 21 is exposed through the visual recognition portion 26. The user can visually recognize the light emitted from the light emitting portion 15 through the visual recognition portion 26.
Next, a description will be given of an example of a notification process executed by the control unit 16 when notifying the remaining amount of liquid contained in the container 14. For example, when the liquid ejection device 11 is powered on, the control unit 16 executes the notification process to notify the remaining amount of liquid contained in the container 14.

As shown in FIG. 6, in step S11, the control unit 16 acquires the remaining amount of liquid contained in the storage unit 14. At this time, the control unit 16 acquires the remaining amount of liquid contained in the storage unit 14 from the detection result of the liquid level sensor 19. In step S11, the control unit 16 may acquire the remaining amount of liquid contained in the storage unit 14 by subtracting the amount of liquid ejected by the ejection unit 13 from the maximum amount of liquid that the storage unit 14 can accommodate.

In step S12, the control unit 16 determines whether the remaining amount of liquid contained in the storage unit 14 is equal to or greater than a first predetermined amount. The first predetermined amount is, for example, 50% of the maximum amount of liquid that the storage unit 14 can contain. The control unit 16 compares the remaining amount of liquid acquired in step S11 with the first predetermined amount. If the control unit 16 determines that the remaining amount of liquid is equal to or greater than the first predetermined amount, it transitions to step S13. If the control unit 16 determines that the remaining amount of liquid is less than the predetermined amount, it transitions to step S14.

In step S13, the control unit 16 turns on the light-emitting unit 15 for a predetermined time. The predetermined time is, for example, 5 seconds. That is, in step S13, the control unit 16 turns on the light-emitting unit 15 in the first light-emitting pattern for the predetermined time. After turning on the light-emitting unit 15 for the predetermined time, the control unit 16 ends the notification process. When the notification process ends, the light-emitting unit 15 is turned off.

In step S14, the control unit 16 determines whether the remaining amount of liquid contained in the storage unit 14 is equal to or greater than a second predetermined amount. The second predetermined amount is, for example, 25% of the maximum amount of liquid that the storage unit 14 can contain. The control unit 16 compares the remaining amount of liquid acquired in step S11 with the second predetermined amount. If the control unit 16 determines that the remaining amount of liquid is equal to or greater than the second predetermined amount, it transitions to step S15. If the control unit 16 determines that the remaining amount of liquid is less than the second predetermined amount, it transitions to step S16.

In step S15, the control unit 16 causes the light-emitting unit 15 to blink at the first blinking interval for a predetermined time. That is, in step S15, the control unit 16 causes the light-emitting unit 15 to emit light in the second light-emitting pattern for a predetermined time. After causing the light-emitting unit 15 to blink for the predetermined time, the control unit 16 ends the notification process. When the notification process ends, the light-emitting unit 15 is turned off.

In step S16, the control unit 16 causes the light-emitting unit 15 to blink at the second blinking interval for a predetermined time. That is, in step S16, the control unit 16 causes the light-emitting unit 15 to emit light in the second light emission pattern for a predetermined time. After causing the light-emitting unit 15 to blink for the predetermined time, the control unit 16 ends the notification process. When the notification process ends, the light-emitting unit 15 is turned off.

The notification process may be started, for example, when an instruction to display the remaining amount of liquid is input from the user to the control unit 16. The notification process may be started, for example, when an instruction to display the remaining amount of liquid is input to the control unit 16 via an external terminal connected to the liquid ejection device 11, or input to the control unit 16 via the display unit 17. In this case, the notification process is executed at limited times, so that the power consumption of the liquid ejection device 11 can be reduced.

The notification process may be performed at all times while the liquid ejection device 11 is powered on. In this case, the user can always check the remaining amount of liquid contained in the container 14 while the liquid ejection device 11 is powered on.

Next, the operation and effects of the first embodiment will be described.
(1) The control unit 16 causes the light-emitting unit 15 to emit light in a light-emitting pattern that corresponds to the remaining amount of liquid contained in the storage unit 14. According to this configuration, the remaining amount of liquid contained in the storage unit 14 can be visually confirmed by looking at the light-emitting pattern of the light-emitting unit 15. Since the remaining amount of liquid contained in the storage unit 14 is notified by the light-emitting unit 15 emitting light, the user can know the remaining amount of liquid contained in the storage unit 14 even in dark surroundings.

(2) The control unit 16 causes the light-emitting unit 15 to emit light in a first emission pattern when the remaining amount of liquid contained in the storage unit 14 is equal to or greater than a first predetermined amount, and causes the light-emitting unit 15 to emit light in a second emission pattern when the remaining amount of liquid contained in the storage unit 14 is less than the first predetermined amount. This allows the user to know whether the remaining amount of liquid contained in the storage unit 14 is equal to or greater than the first predetermined amount, or less than the first predetermined amount.

(3) The control unit 16 shortens the blinking interval of the light-emitting unit 15 in the second light-emitting pattern as the remaining amount of liquid contained in the storage unit 14 decreases. This makes it possible to notify the user that the remaining amount of liquid contained in the storage unit 14 is small.

(4) The viewing unit 26 exposes the light-guiding member 21 so that it can be seen from outside the housing 12. This allows the user to see the light emitted from the light-emitting unit 15 from outside the housing 12 through the viewing unit 26 and the light-guiding member 21.

(5) The visual confirmation unit 26 has a transparent or semi-transparent visual confirmation cover 28 that covers the light guiding member 21. This can reduce the risk of dust in the air attaching to the light guiding member 21.
Next, a description will be given of modified examples of the first embodiment. The modified examples of the first embodiment described below can be appropriately combined with the first embodiment as long as there is no technical contradiction.

- As shown in FIG. 7, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 7, the viewing area 26 is provided across the front surface 12A and the first side surface 12C. The viewing area 26 is provided on the front surface 12A and the first side surface 12C higher than the viewing area 26 shown in FIG. 1. The viewing area 26 may be provided on the housing 12 at a position that is inverted left and right with respect to the display unit 17.

- As shown in FIG. 8, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 8, the viewing area 26 is provided across the front surface 12A and the first side surface 12C. The viewing area 26 is provided on the front surface 12A and the first side surface 12C lower than the viewing area 26 shown in FIG. 1. The viewing area 26 is provided at a position on the front surface 12A adjacent to the discharge port 25. The viewing area 26 may be provided at a position on the housing 12 that is inverted left and right with respect to the discharge port 25.

- As shown in FIG. 9, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 9, the viewing section 26 is not provided on the first side surface 12C, but on the front surface 12A. The viewing section 26 is provided at a position on the front surface 12A adjacent to the display section 17. The viewing section 26 may also be provided at a position on the housing 12 that is mirror imaged from the display section 17.

- As shown in FIG. 10, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 10, the viewing section 26 is not provided on the first side surface 12C, but on the front surface 12A. The viewing section 26 is provided on the front surface 12A, higher than the viewing section 26 shown in FIG. 9. The viewing section 26 may be provided on the housing 12 at a position that is inverted left and right with respect to the display unit 17.

- As shown in FIG. 11, the liquid ejection device 11 may be modified. The viewing portion 26 shown in FIG. 11 is not provided on the first side surface 12C, but on the front surface 12A. The viewing portion 26 is provided on the front surface 12A lower than the viewing portion 26 shown in FIG. 9. The viewing portion 26 is provided at a position on the front surface 12A adjacent to the discharge port 25. The viewing portion 26 may be disposed on the housing 12 at a position that is inverted left and right with respect to the discharge port 25.

- As shown in FIG. 12, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 12, the viewing section 26 has multiple viewing ports 27 and multiple viewing covers 28. In the modified example shown in FIG. 12, the viewing section 26 has five viewing ports 27 and five viewing covers 28. In the modified example shown in FIG. 12, the liquid ejection device 11 has five light-guiding members 21 and five light-emitting sections 15. In the modified example shown in FIG. 12, the storage section 14 stores five types of liquid.

The five viewing ports 27 open on the front surface 12A. The five viewing ports 27 are lined up vertically on the front surface 12A. The five viewing ports 27 expose the five light-guiding members 21, respectively. The five viewing covers 28 are fitted into the five viewing ports 27, respectively. The five light-guiding members 21 guide the light emitted by the five light-emitting units 15, respectively. The five light-emitting units 15 notify the remaining amount of the five types of liquid contained in the storage unit 14, respectively. The user can grasp the remaining amount of the multiple liquids contained in the storage unit 14 by visually checking the light emitted from the multiple light-emitting units 15 through the viewing unit 26. The number of viewing ports 27 in the viewing unit 26 may be four or less, or six or more.

- As shown in FIG. 13, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 13(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 13(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 13(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 13(d). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 13(e). In each of the views shown in FIG. 13, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back.

- As shown in FIG. 14, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 14(a). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 14(b). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 14(c). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 14(d). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 14(e).

- As shown in FIG. 15, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 15. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 15. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 15. For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 15(h). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 15(i). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 15(j). In each of the views shown in FIG. 15, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back.

Second Embodiment
Next, a second embodiment of the liquid ejection device 11 will be described. In the second embodiment, the configuration different from the first embodiment will be mainly described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 16, in the second embodiment, the viewing section 26 is provided on the cover 24. In the second embodiment, the viewing section 26 is provided across the front surface 12A, the top surface 12B, and the first side surface 12C. In the second embodiment, the viewing section 26 is provided on a corner of the cover 24. The viewing section 26 may also be provided across the front surface 12A, the top surface 12B, and the second side surface 12D. For example, the viewing section 26 may be provided on the housing 12 at a position that is mirror-inverted from the display unit 17.

As shown in FIG. 17 , the light-guiding member 21 is exposed through the visual recognition portion 26 .
According to the second embodiment, the same effects as those of the first embodiment can be obtained.
Next, a description will be given of modified examples of the second embodiment. The modified examples of the second embodiment described below can be appropriately combined with the second embodiment as long as there is no technical contradiction.

- As shown in FIG. 18, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 18, the viewing section 26 is provided on the cover 24. The viewing section 26 is provided across the front surface 12A and the top surface 12B. The viewing section 26 is provided at the tip portion of the cover 24. The viewing section 26 may be provided on the housing 12 at a position that is mirror-inverted from the left to right position of the display section 17.

・As shown in FIG. 19, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 19(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 19(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 19(c). In each of the views shown in FIG. 19, when the visibility cover 28 is bent to connect to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 19, when the visibility cover 28 is bent to connect to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views toward the back.

・As shown in FIG. 20, the viewing portion 26 and the light guide member 21 may be modified. For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 20(a). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 20(b). In each of the views shown in FIG. 20, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 20, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 provided on the top surface 12B extends from the top end portion of the viewing cover 28 in each of the views toward the back.

Third Embodiment
Next, a third embodiment of the liquid ejection device 11 will be described. In the third embodiment, the configuration different from the first embodiment will be mainly described. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 21, in the third embodiment, the viewing section 26 is provided on the front surface 12A. The viewing section 26 is provided above the discharge port 25 on the front surface 12A. In the third embodiment, the width of the viewing port 27 is greater than the width of the discharge port 25. In the third embodiment, the liquid ejection device 11 does not include a display section 17.

As shown in FIG. 22 , the light-guiding member 21 is exposed through the visual recognition portion 26 .
According to the third embodiment, the same effects as those of the first embodiment can be obtained.
Next, a description will be given of modified examples of the third embodiment. The modified examples of the third embodiment described below can be appropriately combined with the third embodiment as long as there is no technical contradiction.

- As shown in FIG. 23, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 23, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 21.

- As shown in Figures 24 and 25, the liquid ejection device 11 may be modified. In the modified example shown in Figures 24 and 25, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D. Therefore, the user can grasp the remaining amount of liquid contained in the storage portion 14 not only when viewing the liquid ejection device 11 from the front or from the right side, but also when viewing the liquid ejection device 11 from the left side.

- As shown in Figures 26 and 27, the liquid ejection device 11 may be modified. In the modified example shown in Figures 26 and 27, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, and the second side surface 12D, higher than the viewing portion 26 shown in Figures 24 and 25.

- As shown in FIG. 28, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 28, the viewing portion 26 is provided on the cover 24. The viewing portion 26 is provided across the front surface 12A and the top surface 12B. The viewing portion 26 is provided on the tip portion of the cover 24.

- As shown in FIG. 29, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 29, the viewing portion 26 is provided on the top surface 12B. Therefore, when the user views the liquid ejection device 11 from above, the user can ascertain the remaining amount of liquid contained in the storage portion 14. The viewing portion 26 is provided at a position on the top surface 12B where the distance between the viewing portion 26 and the front surface 12A is shorter than the distance between the viewing portion 26 and the rear surface 12E.

- As shown in FIG. 30, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 30, the viewing portion 26 is provided on the upper surface 12B. Specifically, the viewing portion 26 is provided in the center of the upper surface 12B. Therefore, the viewing portion 26 is provided at a position on the upper surface 12B such that the distance between the viewing portion 26 and the front surface 12A is the same as the distance between the viewing portion 26 and the rear surface 12E.

・As shown in FIG. 31, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 31(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 31(b). In each of the views shown in FIG. 31, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 31, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 31, when the visibility cover 28 is bent so as to connect to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 that is provided on the top surface 12B extends from the upper end portion of the visibility cover 28 in each view toward the back.

- As shown in FIG. 32, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 32(a). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 32(b).

- The viewing section 26 and the light guide member 21 may be modified to have the shape shown in FIG. 33. In each of the views shown in FIG. 33, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 33, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 33, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 provided on the top surface 12B extends from the top end portion of the viewing cover 28 in each of the views toward the back.

Fourth Embodiment
Next, a fourth embodiment of the liquid ejection device 11 will be described. In the fourth embodiment, the configuration different from the first embodiment will be mainly described. In the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 34, in the fourth embodiment, the viewing section 26 is provided on the front surface 12A. In the fourth embodiment, the viewing section 26 has a shape that extends vertically. The viewing section 26 is provided at a position on the front surface 12A where the distance between the viewing section 26 and the first side surface 12C is shorter than the distance between the viewing section 26 and the second side surface 12D. The viewing section 26 may be provided at a position on the housing 12 that is mirror-inverted from the left to right with respect to the display unit 17.

35 , the light guide member 21 is exposed through the viewing portion 26. The viewing opening 27 has a shape that extends vertically. The light guide member 21 has a shape that extends vertically.
According to the fourth embodiment, the same effects as those of the first embodiment can be obtained.

Next, modified examples of the fourth embodiment will be described. The modified examples of the fourth embodiment described below can be combined with the fourth embodiment as appropriate to the extent that there is no technical contradiction.

The liquid ejection device 11 may be modified as shown in Fig. 36. In the modified example shown in Fig. 36, the visual recognition portion 26 is provided across the front surface 12A and the upper surface 12B.
As shown in Fig. 37, the liquid ejection device 11 may be modified. In the modified example shown in Fig. 37, the viewing section 26 has a plurality of viewing ports 27 and a plurality of viewing covers 28. In the modified example shown in Fig. 37, the viewing section 26 has six viewing ports 27 and six viewing covers 28. In the modified example shown in Fig. 37, the liquid ejection device 11 includes six light-guiding members 21 and six light-emitting sections 15. In the modified example shown in Fig. 37, the storage section 14 stores six types of liquid.

The six viewing ports 27 open on the front surface 12A. The six viewing ports 27 are lined up on the left and right sides of the front surface 12A. The six viewing ports 27 expose the six light-guiding members 21, respectively. The six viewing covers 28 are fitted into the six viewing ports 27, respectively. The six light-guiding members 21 guide the light emitted by the six light-emitting units 15, respectively. The six light-emitting units 15 notify the remaining amount of each of the six types of liquid contained in the storage unit 14, respectively. The user can grasp the remaining amount of the multiple liquids contained in the storage unit 14 by visually checking the light emitted from the multiple light-emitting units 15 through the viewing unit 26. The number of viewing ports 27 in the viewing unit 26 may be five or less, or seven or more.

- As shown in FIG. 38, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 38(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 38(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 38(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 38(d). In each of the views shown in FIG. 38, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the upper end portion of the visibility cover 28 in each view toward the back.

- As shown in FIG. 39, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 39(a). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 39(b). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 39(c). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 39(d).

- As shown in FIG. 40, the viewing portion 26 and the light guiding member 21 may be modified. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 40(a). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 40(b). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 40(c). In each of the views shown in FIG. 40, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 provided on the top surface 12B extends from the upper end portion of the viewing cover 28 in each of the views toward the back.

Fifth Embodiment
Next, a fifth embodiment of the liquid ejection device 11 will be described. In the fifth embodiment, the configuration different from the first embodiment will be mainly described. In the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 41, in the fourth embodiment, the viewing section 26 is provided across the front surface 12A and the first side surface 12C. The viewing section 26 is provided in the corner portion of the housing 12 between the front surface 12A and the first side surface 12C. In the fourth embodiment, the viewing section 26 has a shape that extends vertically. The viewing section 26 may be provided across the front surface 12A and the second side surface 12D. That is, the viewing section 26 may be provided in the corner portion of the housing 12 between the front surface 12A and the second side surface 12D. For example, the viewing section 26 may be provided in the housing 12 at a position that is inverted left to right with respect to the display unit 17.

42, the light guide member 21 is exposed through the viewing portion 26. The viewing opening 27 has a shape that extends vertically. The light guide member 21 has a shape that extends vertically.
According to the fifth embodiment, the same effects as those of the first embodiment can be obtained.

Next, modified examples of the fifth embodiment will be described. The modified examples of the fifth embodiment described below can be combined with the fifth embodiment as appropriate to the extent that there is no technical contradiction.

- As shown in FIG. 43, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 43(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 43(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 43(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 43(d). In each of the views shown in FIG. 43, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back.

- As shown in FIG. 44, the viewing portion 26 and the light guide member 21 may be modified. For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 44(a). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 44(b). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 44(c). In each of the views shown in FIG. 44, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back.

Sixth Embodiment
Next, a sixth embodiment of the liquid ejection device 11 will be described. In the sixth embodiment, the configuration different from the first embodiment will be mainly described. In the sixth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 45, in the sixth embodiment, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided in the center of the front surface 12A. The width of the viewing portion 26 is shorter than the width of the discharge port 25. In the sixth embodiment, the liquid ejection device 11 does not include a display portion 17.

As shown in FIG. 46 , the light-guiding member 21 is exposed through the visual recognition portion 26 .
According to the sixth embodiment, the same effects as those of the first embodiment can be obtained.
Next, a description will be given of modifications of the sixth embodiment. The modifications of the sixth embodiment described below can be appropriately combined with the sixth embodiment as long as there is no technical contradiction.

- As shown in FIG. 47, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 47, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 45.

- As shown in FIG. 48, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 48, the viewing portion 26 is provided on the upper surface 12B. The viewing portion 26 is provided at a position on the upper surface 12B where the distance between the viewing portion 26 and the front surface 12A is shorter than the distance between the viewing portion 26 and the rear surface 12E.

- As shown in FIG. 49, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 49, the viewing portion 26 is provided on the upper surface 12B. The viewing portion 26 is provided in the center of the upper surface 12B. The viewing portion 26 is provided at a position on the upper surface 12B where the distance between the viewing portion 26 and the front surface 12A is the same as the distance between the viewing portion 26 and the rear surface 12E.

- As shown in FIG. 50, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 50(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 50(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 50(c).

- As shown in FIG. 51, the viewing portion 26 and the light guiding member 21 may be modified. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 51 (a). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 51 (b). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 51 (c).

Seventh Embodiment
Next, a seventh embodiment of the liquid ejection device 11 will be described. In the seventh embodiment, the configuration different from the first embodiment will be mainly described. In the seventh embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

As shown in Figures 52 and 53, in the seventh embodiment, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided at a position on the front surface 12A where the distance between the viewing portion 26 and the first side surface 12C is shorter than the distance between the viewing portion 26 and the second side surface 12D.

In the seventh embodiment, the housing 12 has an exhaust cover 34 that can be opened and closed. In Figures 52 and 53, the exhaust cover 34 is closed. When the exhaust cover 34 is opened, the exhaust port 25 is exposed.

As shown in Figures 54, 55, and 56, the light-guiding member 21 is exposed through the viewing portion 26. The viewing portion 26 has a viewing opening 27 and a viewing cover 28. The viewing opening 27 has a shape that extends vertically. The light-guiding member 21 has a shape that extends vertically.

According to the seventh embodiment, the same effects as those of the first embodiment can be obtained.
Next, a description will be given of modified examples of the seventh embodiment. The modified examples of the seventh embodiment described below can be appropriately combined with the seventh embodiment as long as there is no technical contradiction.

- As shown in Figures 57 and 58, the liquid ejection device 11 may be modified. In the modified example shown in Figures 57 and 58, the shape of the viewing portion 26, in particular the shape of the viewing port 27 and the shape of the viewing cover 28, are modified.

- As shown in Figures 59 and 60, the liquid ejection device 11 may be modified. In the modified example shown in Figures 59 and 60, the shape of the viewing portion 26, in particular the shape of the viewing port 27 and the shape of the viewing cover 28, are modified.

- As shown in Figures 61 and 62, the liquid ejection device 11 may be modified. In the modified example shown in Figures 61 and 62, the shape of the viewing portion 26, in particular the shape of the viewing port 27 and the shape of the viewing cover 28, are modified.

- As shown in FIG. 63, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 63(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 63(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 63(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 63(d).

- As shown in FIG. 64, the viewing portion 26 and the light guiding member 21 may be modified. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 64(a). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 64(b). For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in FIG. 64(c).

The following modifications may also be made to the first embodiment of the liquid ejection device 11.

- As shown in FIG. 65, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 65, the viewing section 26 is not provided on the first side surface 12C, but on the front surface 12A. The viewing section 26 is provided above the display section 17 on the front surface 12A.

- As shown in FIG. 66, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 66, the viewing section 26 is not provided on the first side surface 12C, but on the front surface 12A. The viewing section 26 is provided below the display section 17 on the front surface 12A.

・As shown in FIG. 67, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 67(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 67(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 67(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 67(d). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 67(e). In each of the views shown in FIG. 67, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back.

・As shown in FIG. 68, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. 68. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 68. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 68(j).

・As shown in FIG. 69, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(a). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(b). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(c). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(d). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(e). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(f). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(g). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(h). For example, the light-guiding member 21 may be modified to have a shape shown in FIG. 69(i). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 69(j).

・As shown in FIG. 70, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. 70. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 70. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 70(j).

- As shown in FIG. 71, the light guiding member 21 may be modified. For example, the light guiding member 21 may be modified to have the shape shown in FIG. 71 (a). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 71 (b). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 71 (c). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 71 (d). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 71 (e). In each of the views shown in FIG. 71, multiple light guiding members 21 are arranged at intervals.

・As shown in FIG. 72, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 72 (g). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 72 (h). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 72 (i). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 72 (j). In each of the views shown in FIG. 72, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back.

・As shown in FIG. 73, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 73 (g). In each of the views shown in FIG. 73, when the visibility cover 28 is bent so as to connect to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 that is provided on the first side surface 12C extends from the right end portion of the visibility cover 28 toward the back in each view.

・As shown in FIG. 74, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 74 (g). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in (h) of Figure 74. In each of the views shown in Figure 74, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 toward the back in each view.

The second embodiment of the liquid ejection device 11 may also be modified as follows:

・As shown in FIG. 75, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(d). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(e). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 75(f). In each of the figures shown in FIG. 75, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each figure toward the back. In each of the views shown in FIG. 75, when the visibility cover 28 is bent so as to connect to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 that is provided on the top surface 12B extends from the upper end portion of the visibility cover 28 in each view toward the back.

In addition, the light-guiding member 21 of this embodiment may be modified to use the light-guiding member 21 applicable to the first embodiment.

・As shown in FIG. 76, the viewing portion 26 and the light guiding member 21 may be modified. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (a) of FIG. 76. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (b) of FIG. 76. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (c) of FIG. 76. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (d) of FIG. 76. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (e) of FIG. 76. For example, the viewing portion 26 and the light guiding member 21 may be modified to have the shape shown in (f) of FIG. 76. In each of the views shown in FIG. 76, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 76, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views.

The third embodiment of the liquid ejection device 11 may also be modified as follows:

- As shown in FIG. 77, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 77, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 23.

- As shown in Figures 78 and 79, the liquid ejection device 11 may be modified. In the modified example shown in Figures 78 and 79, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, and the second side surface 12D, lower than the viewing portion 26 shown in Figures 24 and 25.

- As shown in Figure 80, the liquid ejection device 11 may be modified. In the modified example shown in Figure 80, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D.

- As shown in FIG. 81, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 81, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D.

- As shown in FIG. 82, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 82, the viewing portion 26 is provided on the front surface 12A.

- As shown in FIG. 83, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 83, the viewing portion 26 is provided on the front surface 12A.

- As shown in FIG. 84, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 84, the viewing portion 26 is provided on the front surface 12A. In the modified example shown in FIG. 84, the width of the viewing opening 27 is larger than the width of the viewing opening 27 shown in FIG. 21.

- As shown in FIG. 85, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 85, the viewing portion 26 is provided on the front surface 12A. In the modified example shown in FIG. 85, the width of the viewing opening 27 is greater than the width of the viewing opening 27 shown in FIG. 21. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 84.

- As shown in FIG. 86, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 86, the viewing portion 26 is provided on the front surface 12A. In the modified example shown in FIG. 86, the width of the viewing opening 27 is greater than the width of the viewing opening 27 shown in FIG. 21. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 85.

- As shown in FIG. 87, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 87, the viewing portion 26 is provided on the cover 24. The viewing portion 26 is provided across the front surface 12A and the top surface 12B. The viewing portion 26 is provided at the tip portion of the cover 24. In the modified example shown in FIG. 87, the width of the viewing portion 26 is greater than the width of the viewing portion 26 shown in FIG. 28.

- As shown in Figure 88, the liquid ejection device 11 may be modified. In the modified example shown in Figure 88, the viewing portion 26 is provided on the top surface 12B. Therefore, when the user looks at the liquid ejection device 11 from above, the user can ascertain the remaining amount of liquid contained in the storage portion 14. The viewing portion 26 is provided on the top surface 12B at the end on the front surface 12A side. In the modified example shown in Figure 88, the width of the viewing portion 26 is greater than the width of the viewing portion 26 shown in Figure 29.

- As shown in FIG. 89, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 89, the viewing portion 26 is provided on the upper surface 12B. Therefore, when the user looks at the liquid ejection device 11 from above, the user can ascertain the remaining amount of liquid contained in the storage portion 14. The viewing portion 26 is provided on the upper surface 12B at a position closer to the rear surface 12E than the viewing portion 26 shown in FIG. 29. In the modified example shown in FIG. 89, the width of the viewing portion 26 is greater than the width of the viewing portion 26 shown in FIG. 29.

- As shown in Figure 90, the liquid ejection device 11 may be modified. In the modified example shown in Figure 90, the viewing portion 26 is provided across the front surface 12A, the top surface 12B, the first side surface 12C, the second side surface 12D, and the rear surface 12E.

- As shown in FIG. 91, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 91, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. Note that in FIG. 91, the portions of the viewing portion 26 provided on the second side surface 12D and the rear surface 12E are not normally visible, but in order to show the overall shape of the viewing portion 26, the portions of the viewing portion 26 provided on the second side surface 12D and the rear surface 12E are shown with dashed lines for reference. Similarly, in FIG. 92 to FIG. 100 described below, the portions of the viewing portion 26 provided on the second side surface 12D and the rear surface 12E are shown with dashed lines for reference.

- As shown in FIG. 92, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 92, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E, lower than the viewing portion 26 shown in FIG. 91.

- As shown in FIG. 93, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 93, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E, lower than the viewing portion 26 shown in FIG. 92.

- As shown in FIG. 94, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 94, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E, lower than the viewing portion 26 shown in FIG. 93.

- As shown in FIG. 95, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 95, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E, lower than the viewing portion 26 shown in FIG. 94.

- As shown in FIG. 96, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 96, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E. The viewing portion 26 is provided on the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E, lower than the viewing portion 26 shown in FIG. 95.

- As shown in Figure 97, the liquid ejection device 11 may be modified. In the modified example shown in Figure 97, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E.

- As shown in Figure 98, the liquid ejection device 11 may be modified. In the modified example shown in Figure 98, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E.

- As shown in Figure 99, the liquid ejection device 11 may be modified. In the modified example shown in Figure 99, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E.

- As shown in FIG. 100, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 100, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, the second side surface 12D, and the rear surface 12E.

- As shown in FIG. 101, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in FIG. 101(a). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 101(b). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 101(c). For example, the visibility cover 28 may be modified to have the shape shown in FIG. 101(d). In each of the views shown in FIG. 101, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 101, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 101, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 101, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views.

As shown in Fig. 102, the light guiding member 21 may be modified. For example, the light guiding member 21 may be modified to have a shape shown in (a) of Fig. 102. For example, the light guiding member 21 may be modified to have a shape shown in (b) of Fig. 102. For example, the light guiding member 21 may be modified to have a shape shown in (c) of Fig. 102. For example, the light guiding member 21 may be modified to have a shape shown in (d) of Fig. 102. For example, the light guiding member 21 may be modified to have a shape shown in (e) of Fig. 102. For example, the light guiding member 21 may be modified to have a shape shown in (f) of Fig. 102.
Moreover, the light guide member 21 of this embodiment may be changed to use the light guide member 21 applicable to the first embodiment.

- As shown in FIG. 103, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. 103. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 103. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 103. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 103. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 103. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (k) of FIG. 103. In each of the views shown in FIG. 103, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 103, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 103, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 103, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views.

・As shown in FIG. 104, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 104 (g). For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 104. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 104. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 104. In each of the views shown in FIG. 104, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 104, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visual confirmation cover 28 provided on the second side surface 12D extends from the left end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 104, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 104, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

- As shown in FIG. 105, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 105. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 105. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 105. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 105. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 105. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 105. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 105. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 105. In each of the views shown in FIG. 105, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 105, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visual confirmation cover 28 provided on the second side surface 12D extends from the left end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 105, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 105, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

The following modifications may also be made to the fourth embodiment of the liquid ejection device 11.

- As shown in FIG. 106, the visibility cover 28 may be modified. In the modified example shown in FIG. 106, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the upper end portion of the visibility cover 28 in FIG. 106 toward the back.

・As shown in FIG. 107, the light guide member 21 may be modified. For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(a). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(b). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(c). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(d). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(e). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(f). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(g). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(h). For example, the light guide member 21 may be modified to have a shape shown in FIG. 107(i).

・As shown in FIG. 108, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. 108. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 108. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 108(j).

・As shown in FIG. 109, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 109. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 109. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 109. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 109. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 109. For example, the light-guiding member 21 may be modified to have the shape shown in (j) of FIG. 109. For example, the light-guiding member 21 may be modified to have the shape shown in (k) of FIG. 109. For example, the light-guiding member 21 may be modified to have the shape shown in (l) of FIG. 109. For example, the light-guiding member 21 may be modified to have the shape shown in (m) of FIG. 109.

・As shown in FIG. 110, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. 110. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 110. For example, the light-guiding member 21 may be modified to have the shape shown in (j) of FIG. 110. For example, the light-guiding member 21 may be modified to have the shape shown in (k) of FIG. 110. For example, the light-guiding member 21 may be modified to have the shape shown in (l) of FIG. 110.

・As shown in FIG. 111, the light-guiding member 21 may be modified. For example, the light-guiding member 21 may be modified to have a shape shown in (a) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (b) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (c) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (d) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (e) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (f) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (g) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (h) of FIG. 111. For example, the light-guiding member 21 may be modified to have a shape shown in (i) of FIG. 111. For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 111(j). For example, the light-guiding member 21 may be modified to have the shape shown in FIG. 111(k).

・As shown in FIG. 112, the light guide member 21 may be modified. For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(a). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(b). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(c). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(d). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(e). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(f). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(g). For example, the light guide member 21 may be modified to have a shape shown in FIG. 112(h).

- As shown in FIG. 113, the light guiding member 21 may be modified. For example, the light guiding member 21 may be modified to have the shape shown in FIG. 113(a). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 113(b). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 113(c). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 113(d). For example, the light guiding member 21 may be modified to have the shape shown in FIG. 113(e). In each of the views shown in FIG. 113, multiple light guiding members 21 are arranged at intervals.

・As shown in FIG. 114, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (c). The viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 114 (g). For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (h) of FIG. 114. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (i) of FIG. 114. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (j) of FIG. 114. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (k) of FIG. 114. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (l) of FIG. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (m) of FIG. In each of the views shown in FIG. 114, when the viewing cover 28 is bent so as to connect to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 that is provided on the top surface 12B extends from the upper end portion of the viewing cover 28 in each view toward the back.

・As shown in FIG. 115, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 115. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 115. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 115. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 115. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 115. For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 115(h). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 115(i). For example, the viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 115(j). In each of the views shown in FIG. 115, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 provided on the top surface 12B extends from the upper end portion of the viewing cover 28 in each of the views toward the back.

The following modifications may also be made to the fifth embodiment of the liquid ejection device 11.

- The visibility cover 28 may be modified to have the shape shown in FIG. 116. In the modified example shown in FIG. 116, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in FIG. 116 toward the back.

In addition, the light-guiding member 21 of this embodiment may be modified to use the light-guiding member 21 applicable to the fourth embodiment.

- The viewing portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 117. In the modified example shown in FIG. 117, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in FIG. 117 toward the back.

The sixth embodiment of the liquid ejection device 11 may also be modified as follows:

- As shown in FIG. 118, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 118, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A closer to the first side surface 12C than the viewing portion 26 shown in FIG. 45.

- As shown in FIG. 119, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 119, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 118.

- As shown in FIG. 120, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 120, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided on the front surface 12A lower than the viewing portion 26 shown in FIG. 118.

- As shown in FIG. 121, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 121, the viewing portion 26 is provided across the front surface 12A and the top surface 12B. The viewing portion 26 is provided on the front surface 12A above the viewing portion 26 shown in FIG. 45 and closer to the first side surface 12C than the viewing portion 26 shown in FIG. 45.

In addition, the light-guiding member 21 of this embodiment may be modified to use the light-guiding member 21 applicable to the first embodiment.

・As shown in FIG. 122, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 122 (g). For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (h) of FIG. 122. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (i) of FIG. 122. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (j) of FIG. 122. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (k) of FIG. 122. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (l) of FIG. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (m) of FIG. For example, the visual confirmation portion 26 and the light guiding member 21 may be modified to have a shape shown in (n) of FIG. 122. In each of the views shown in FIG. 122, when the viewing cover 28 is bent so as to connect to the front surface 12A and the top surface 12B, the portion of the viewing cover 28 that is provided on the top surface 12B extends from the upper end portion of the viewing cover 28 in each view toward the back.

The seventh embodiment of the liquid ejection device 11 may also be modified as follows:

The light-guiding member 21 of this embodiment may be modified to use the light-guiding member 21 applicable to the fourth embodiment.

・As shown in FIG. 123, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 123. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 123. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 123. The viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 123. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. 123. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. 123. The viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (k) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (l) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (m) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (n) of FIG. 123. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (o) of FIG. 123. For example, the visual recognition portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 123 (p).

・As shown in FIG. 124, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (c). The viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (f). The viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 124 (g). For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 124. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 124. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 124. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (k) of FIG. 124. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (l) of FIG. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (m) of FIG. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (n) of FIG. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (o) of FIG. 124. For example, the visual recognition portion 26 and the light guide member 21 may be modified to have the shape shown in FIG. 124(p).

In addition, the following modifications may be made to at least one of the first, second, and third embodiments of the liquid ejection device 11.

・As shown in FIG. 125, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have a shape shown in (a) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (b) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (c) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (d) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (e) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (f) of FIG. 125. For example, the visibility cover 28 may be modified to have a shape shown in (g) of FIG. For example, the visibility cover 28 may be modified to have a shape shown in (h) of FIG. For example, the visibility cover 28 may be modified to have a shape shown in (i) of FIG. 125. For example, the visibility cover 28 may be changed to have a shape shown in (j) of FIG. 125. For example, the visibility cover 28 may be changed to have a shape shown in (k) of FIG. 125. For example, the visibility cover 28 may be changed to have a shape shown in (l) of FIG. 125. In each of the views shown in FIG. 125, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 125, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 125, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 125, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

In this case, the light-guiding member 21 may be the light-guiding member 21 applicable in the first embodiment, the light-guiding member 21 applicable in the second embodiment, or the light-guiding member 21 applicable in the third embodiment.

・As shown in FIG. 126, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 126 (g). For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 126. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 126. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 126. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (k) of FIG. 126. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (l) of FIG. In each of the views shown in FIG. 126, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 126, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 126, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 126, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views.

・As shown in FIG. 127, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 127. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 127. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 127. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 127. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 127. For example, the visual confirmation section 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 127. For example, the visual confirmation section 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 127. For example, the visual confirmation section 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 127. In each of the views shown in FIG. 127, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the part of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 127, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the part of the visual confirmation cover 28 provided on the second side surface 12D extends from the left end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 127, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 127, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

In addition, the following modifications may be made to at least either the fourth or fifth embodiment of the liquid ejection device 11.

- As shown in FIG. 128, the visibility cover 28 may be modified. For example, the visibility cover 28 may be modified to have the shape shown in (a) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (b) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (c) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (d) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (e) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (f) of FIG. 128. For example, the visibility cover 28 may be modified to have the shape shown in (g) of FIG. For example, the visibility cover 28 may be modified to have the shape shown in (h) of FIG. For example, the visibility cover 28 may be modified to have the shape shown in (i) of FIG. 128. For example, the visibility cover 28 may be changed to have a shape shown in (j) of FIG. 128. For example, the visibility cover 28 may be changed to have a shape shown in (k) of FIG. 128. For example, the visibility cover 28 may be changed to have a shape shown in (l) of FIG. 128. In each of the views shown in FIG. 128, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 128, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 128, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 128, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

In this case, the light-guiding member 21 may be the light-guiding member 21 applicable in the fourth embodiment or the light-guiding member 21 applicable in the fifth embodiment.

・As shown in FIG. 129, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (a). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (b). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (c). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (d). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (e). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (f). For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in FIG. 129 (g). For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 129. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 129. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 129. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (k) of FIG. 129. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (l) of FIG. In each of the views shown in FIG. 129, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 129, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 129, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 129, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views.

・As shown in FIG. 130, the viewing portion 26 and the light-guiding member 21 may be modified. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (a) of FIG. 130. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (b) of FIG. 130. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (c) of FIG. 130. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (d) of FIG. 130. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (e) of FIG. 130. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (f) of FIG. For example, the viewing portion 26 and the light-guiding member 21 may be modified to have the shape shown in (g) of FIG. 130. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (h) of FIG. 130. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (i) of FIG. 130. For example, the visual confirmation portion 26 and the light guide member 21 may be modified to have a shape shown in (j) of FIG. 130. In each of the views shown in FIG. 130, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visual confirmation cover 28 provided on the first side surface 12C extends from the right end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 130, when the visual confirmation cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visual confirmation cover 28 provided on the second side surface 12D extends from the left end portion of the visual confirmation cover 28 in each of the views toward the back. In each of the views shown in FIG. 130, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 130, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

The following modifications may also be made to the first embodiment of the liquid ejection device 11.

- As shown in FIG. 131, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 131, the viewing section 26 is provided across the front surface 12A and the first side surface 12C. The viewing section 26 is provided on the front surface 12A and the first side surface 12C lower than the viewing section 26 shown in FIG. 1. The viewing section 26 may be provided on the housing 12 at a position that is inverted left and right with respect to the discharge port 25. Also, in the modified example shown in FIG. 131, the liquid ejection device 11 does not include a display section 17. In this way, the first embodiment may be configured not to include the display section 17.

- As shown in FIG. 132, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 132, the viewing unit 26 is not provided on the first side surface 12C, but on the front surface 12A. The viewing unit 26 may be provided on the housing 12 at a position that is inverted left and right with respect to the display unit 17. The viewing unit 26 is provided on the front surface 12A below the viewing unit 26 shown in FIG. 9. The viewing unit 26 may be provided on the housing 12 at a position that is inverted left and right with respect to the discharge port 25. Also, in the modified example shown in FIG. 131, the liquid ejection device 11 does not include a display unit 17. In this way, the first embodiment may be configured not to include the display unit 17.

The second embodiment of the liquid ejection device 11 may also be modified as follows:

- As shown in FIG. 133, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 133, the viewing section 26 is provided on the cover 24. The viewing section 26 is provided across the front surface 12A and the top surface 12B. The viewing section 26 is provided at the tip portion of the cover 24. Also, in the modified example shown in FIG. 133, the liquid ejection device 11 does not include a display section 17. In this way, in the second embodiment, the configuration may be such that the display section 17 is not included.

The following modifications may also be made to the fourth embodiment of the liquid ejection device 11.

- As shown in FIG. 134, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 134, the viewing section 26 is provided on the front surface 12A. The viewing section 26 is shaped to extend further downward than the viewing section 26 shown in FIG. 34. Also, in the modified example shown in FIG. 134, the liquid ejection device 11 does not include a display section 17. In this way, the fourth embodiment may be configured not to include a display section 17.

- As shown in FIG. 135, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 135, the viewing section 26 is provided across the front surface 12A and the top surface 12B. The viewing section 26 is shaped to extend further downward than the viewing section 26 shown in FIG. 34. Also, in the modified example shown in FIG. 135, the liquid ejection device 11 does not include a display section 17. In this way, the fourth embodiment may be configured without including the display section 17.

- As shown in FIG. 136, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 136, the viewing section 26 is provided across the front surface 12A and the top surface 12B. The viewing section 26 is shaped to extend further toward the back of the top surface 12B than the viewing section 26 shown in FIG. 135. Also, in the modified example shown in FIG. 136, the liquid ejection device 11 does not include a display section 17. In this way, the fourth embodiment may be configured without including the display section 17.

- As shown in FIG. 137, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 137, the viewing section 26 is provided across the front surface 12A and the top surface 12B. The viewing section 26 is disposed closer to the first side surface 12C than the viewing section 26 shown in FIG. 136. Also, in the modified example shown in FIG. 137, the liquid ejection device 11 does not include a display section 17. In this way, the fourth embodiment may be configured not to include a display section 17.

- As shown in FIG. 138, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 138, the visual confirmation unit 26 is provided across the front surface 12A, the top surface 12B, and the first side surface 12C. Also, in the modified example shown in FIG. 138, the liquid ejection device 11 does not include a display unit 17. In this way, the fourth embodiment may be configured without including the display unit 17.

The following modifications may also be made to the fifth embodiment of the liquid ejection device 11.

・As shown in FIG. 139 to FIG. 144, the liquid ejection device 11 may be modified. In the modified examples shown in FIG. 139 to FIG. 144, the viewing portion 26 is provided across the front surface 12A, the top surface 12B, and the first side surface 12C. The viewing portion 26 is provided in the corner portion of the housing 12, which is defined by the front surface 12A, the top surface 12B, and the first side surface 12C. In the fourth embodiment, the viewing portion 26 is shaped to extend vertically. The viewing portion 26 may be provided across the front surface 12A, the top surface 12B, and the second side surface 12D. That is, the viewing portion 26 may be provided in the corner portion of the housing 12, which is defined by the front surface 12A, the top surface 12B, and the second side surface 12D. In addition, in the modified examples shown in FIG. 139 to FIG. 144, the liquid ejection device 11 does not include a display unit 17. In this way, the fifth embodiment may be configured without including the display unit 17.

・As shown in Figures 145 to 150, the liquid ejection device 11 may be modified. In the modified example shown in Figures 145 to 150, the viewing portion 26 is provided across the front surface 12A, the top surface 12B, and the first side surface 12C. The viewing portion 26 is provided in the corner portion of the housing 12, which is formed by the front surface 12A, the top surface 12B, and the first side surface 12C. In the fourth embodiment, the viewing portion 26 is shaped to extend vertically. The viewing portion 26 may be provided across the front surface 12A, the top surface 12B, and the second side surface 12D. In other words, the viewing portion 26 may be provided in the corner portion of the housing 12, which is formed by the front surface 12A, the top surface 12B, and the second side surface 12D. The viewing portion 26 shown in Figures 145 to 150 has a shorter length in the direction along the front surface 12A and the first side surface 12C than the viewing portion 26 shown in Figures 139 to 144. In addition, in the modified examples shown in Figures 145 to 150, the liquid ejection device 11 does not include a display unit 17. In this way, the fifth embodiment may be configured without including a display unit 17.

-As shown in Figures 151 to 154, the liquid ejection device 11 may be modified. In the modified example shown in Figures 151 to 154, the viewing portion 26 is provided across the front surface 12A, the top surface 12B, and the first side surface 12C. The viewing portion 26 is provided in the corner portion of the housing 12, which is formed by the front surface 12A, the top surface 12B, and the first side surface 12C. In the fourth embodiment, the viewing portion 26 is shaped to extend vertically. The viewing portion 26 may be provided across the front surface 12A, the top surface 12B, and the second side surface 12D. In other words, the viewing portion 26 may be provided in the corner portion of the housing 12, which is formed by the front surface 12A, the top surface 12B, and the second side surface 12D. The viewing portion 26 shown in Figures 151 to 154 has a shorter length in the direction along the front surface 12A and the first side surface 12C than the viewing portion 26 shown in Figures 145 to 150. In addition, in the modified examples shown in Figures 151 to 154, the liquid ejection device 11 does not include a display unit 17. In this way, the fifth embodiment may be configured without including a display unit 17.

The sixth embodiment of the liquid ejection device 11 may also be modified as follows:

- As shown in Figures 155 to 157, the liquid ejection device 11 may be modified. In the modified examples shown in Figures 155 to 157, the viewing portion 26 is provided on the top surface 12B. The viewing portion 26 is provided on the top surface 12B at a position on the front surface 12A side and the first side surface 12C side. Note that in Figures 155 to 157, the configuration of the housing 12 is partially omitted.

The seventh embodiment of the liquid ejection device 11 may also be modified as follows:

・As shown in Figures 158 to 160, the liquid ejection device 11 may be modified. In the modified examples shown in Figures 158 to 160, the viewing portion 26 is provided on the front surface 12A. The viewing portion 26 is provided at a position on the front surface 12A where the distance between the viewing portion 26 and the first side surface 12C is shorter than the distance between the viewing portion 26 and the second side surface 12D. The viewing portion 26 shown in Figures 158 to 160 has a smaller area on the front surface 12A than the viewing portion 26 shown in Figure 52. The viewing portion 26 shown in Figure 159 is disposed lower on the front surface 12A than the viewing portion 26 shown in Figure 158. The viewing portion 26 shown in Figure 160 is disposed lower on the front surface 12A than the viewing portion 26 shown in Figure 159. Also, in the modified examples shown in Figures 158 to 160, the liquid ejection device 11 does not have an exhaust cover 34. In this way, the seventh embodiment may be configured without including the discharge cover 34.

- As shown in FIG. 161, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 161, the viewing portion 26 is provided across the front surface 12A and the top surface 12B. The viewing portion 26 is provided at a position on the front surface 12A and the top surface 12B where the distance between the viewing portion 26 and the first side surface 12C is shorter than the distance between the viewing portion 26 and the second side surface 12D. The viewing portion 26 shown in FIG. 161 has a smaller area on the front surface 12A than the viewing portion 26 shown in FIG. 52. Also, in the modified example shown in FIG. 161, the liquid ejection device 11 does not include an exhaust cover 34. In this way, the seventh embodiment may be configured not to include an exhaust cover 34.

- As shown in FIG. 162, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 162, the viewing portion 26 is provided on the top surface 12B. The viewing portion 26 is provided at a position on the top surface 12B where the distance between the viewing portion 26 and the first side surface 12C is shorter than the distance between the viewing portion 26 and the second side surface 12D. Note that in FIG. 162, the configuration of the housing 12 is partially omitted.

In addition, the following modifications may be made to at least either the sixth or seventh embodiment of the liquid ejection device 11.

・The visibility cover 28 may be modified to have the shapes shown in (a) to (f) of FIG. 163. In each of the views shown in FIG. 163, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 163, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 163, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the upper end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 163, when the visibility cover 28 is bent so as to connect to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 that is provided on the top surface 12B extends forward from the upper end portion of the visibility cover 28 in each view.

In this case, the light-guiding member 21 may be the light-guiding member 21 applicable in the sixth embodiment or the light-guiding member 21 applicable in the seventh embodiment.

・The viewing portion 26 and the light guide member 21 may be modified to have the shapes shown in (a) to (q) of FIG. 164. In the viewing portion 26 shown in (a) of FIG. 164, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 164, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 164, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 164, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 164, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

・The viewing portion 26 and the light guide member 21 may be modified to have the shapes shown in (a) to (j) of FIG. 165. In the viewing portion 26 shown in (a), (d), and (g) of FIG. 165, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 165, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 165, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 165, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 165, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views toward the front.

・The viewing portion 26 and the light guide member 21 may be modified to have the shapes shown in (a) to (j) of FIG. 166. In the viewing portion 26 shown in (a), (h), and (j) of FIG. 166, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 166, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 166, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 166, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views toward the back. In each of the views shown in FIG. 166, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views toward the front.

The following modifications may also be made to the fourth embodiment of the liquid ejection device 11.

- As shown in Figures 167 to 184, the liquid ejection device 11 may be modified. In the modified examples shown in Figures 167 to 173 and Figures 175 to 184, the viewing portion 26 is provided on the front surface 12A. In the modified example shown in Figure 174, the viewing portion 26 is provided across the front surface 12A and the top surface 12B. The viewing portion 26 shown in Figures 167 to 178 and Figures 183 to 184 is provided so as to protrude further forward than the front surface 12A. The viewing portion 26 shown in Figures 179 to 182 is provided so as to be recessed further back than the front surface 12A.

The third embodiment of the liquid ejection device 11 may also be modified as follows:

- As shown in Figs. 185 to 199, the liquid ejection device 11 may be modified. In the modified examples shown in Figs. 185 to 189, 193 to 194, and 196 to 198, the viewing portion 26 is provided on the front surface 12A. In the modified examples shown in Figs. 190 to 192, the viewing portion 26 is provided across the front surface 12A, the first side surface 12C, and the second side surface 12D. In the modified examples shown in Figs. 195 and 199, the viewing portion 26 is provided across the front surface 12A and the first side surface 12C.

・As shown in (a) to (l) of FIG. 200, the visibility cover 28 may be modified. In each of the views shown in FIG. 200, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the visibility cover 28 provided on the first side surface 12C extends from the right end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 200, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the visibility cover 28 provided on the second side surface 12D extends from the left end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 200, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views. In each of the views shown in FIG. 200, when the visibility cover 28 is bent so as to connect to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 that is provided on the top surface 12B extends forward from the upper end portion of the visibility cover 28 in each view.

・As shown in (a) to (p) of FIG. 201, the viewing portion 26 and the light guide member 21 may be modified. In the viewing portion 26 shown in (a), (h), (l), and (p) of FIG. 201, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 201, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 201, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 201, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 201, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

・As shown in (a) to (p) of FIG. 202, the viewing portion 26 and the light guide member 21 may be modified. In the viewing portion 26 shown in (a), (h), (l), and (m) of FIG. 202, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 202, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 202, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 202, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 202, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

・As shown in (a) to (p) of FIG. 203, the viewing portion 26 and the light guide member 21 may be modified. In the viewing portion 26 shown in (d), (e), (l), and (m) of FIG. 203, the light guide member 21 is arranged to correspond to the entire surface of the viewing cover 28. In each of the views shown in FIG. 203, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the first side surface 12C, the portion of the viewing cover 28 provided on the first side surface 12C extends from the right end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 203, when the viewing cover 28 is bent so as to be connected to the front surface 12A and the second side surface 12D, the portion of the viewing cover 28 provided on the second side surface 12D extends from the left end portion of the viewing cover 28 in each of the views toward the back. In each of the views shown in FIG. 203, when the visibility cover 28 is bent so as to be connected to the front surface 12A and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views. In each of the views shown in FIG. 203, when the visibility cover 28 is bent so as to be connected to the rear surface 12E and the top surface 12B, the portion of the visibility cover 28 provided on the top surface 12B extends from the top end portion of the visibility cover 28 in each of the views in the respective views.

Eighth embodiment
Next, an eighth embodiment of the liquid ejection device 11 will be described. In the eighth embodiment, the configuration different from the first embodiment will be mainly described. In the eighth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

In the eighth embodiment, the viewing portion 26 is disposed inside the housing 12 and is configured so as not to be directly visible from the outside. Figure 204 shows a liquid ejection device 11 of the eighth embodiment. In Figure 204, the viewing portion 26 is located in a position that would not normally be visible, but in order to show the overall shape of the viewing portion 26, the viewing portion 26 is shown in dashed lines for reference. Similarly, in Figures 205 to 209 described below, the viewing portion 26, which is located in a position that would not normally be visible, is shown in dashed lines for reference.

Specifically, the viewing unit 26 is disposed on the rear side of the front surface 12A. An opening 36 is provided on the front surface 12A below the viewing unit 26. The light emitted from the light-emitting unit 15 is not directly viewed from the viewing unit 26, but is viewed as indirect light emitted from the opening 36. At this time, the light emitted from the light-emitting unit 15 may be reflected by the housing 12 so that the user can view it, or may be reflected by the surface of a table, floor, or the like on which the liquid ejection device 11 is placed so that the user can view it. In this embodiment, the liquid ejection device 11 does not include a display unit 17. However, the liquid ejection device 11 may be configured to include a display unit 17. In this embodiment, the configuration of the housing 12 is partially omitted.

According to the eighth embodiment, the user can see the light emitted from the light-emitting unit 15 from outside the housing 12 as indirect light through the opening 36. By using indirect light in this way, a soft impression can be given to the user.

Next, a description will be given of modified examples of the eighth embodiment. The modified examples of the eighth embodiment described below can be appropriately combined with the eighth embodiment as long as there is no technical contradiction.
In this embodiment, the outlet 25 through which the medium 99 is discharged is provided on the top surface 12B, and the outlet 25 is exposed when the cover 24 is opened.

As shown in FIG. 205, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 205, the visual confirmation part 26 is provided across the front surface 12A and the first side surface 12C. The visual confirmation part 26 is arranged inside the housing 12 and is configured not to be directly visible from the outside. Specifically, the visual confirmation part 26 is arranged on the back side of the front surface 12A and the first side surface 12C. An opening 36 is provided on the front surface 12A and the first side surface 12C at the lower part of the visual confirmation part 26. The light emitted from the light emitting part 15 is not directly visible from the visual confirmation part 26, but is visible as indirect light emitted from the opening 36. At this time, the light emitted from the light emitting part 15 may be reflected by the housing 12 so as to be visible to the user, or may be reflected by the surface of a table, floor, or the like on which the liquid ejection device 11 is installed so as to be visible to the user.
In the modified example shown in FIG. 205, the outlet 25 through which the medium 99 is discharged is also provided on the top surface 12B, and the outlet 25 is exposed when the cover 24 is opened.

As shown in FIG. 206, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 206, the viewing section 26 is provided on the front surface 12A. The viewing section 26 is arranged inside the housing 12 and is configured not to be directly visible from the outside. Specifically, the viewing section 26 is arranged on the back side of the front surface 12A. In the front surface 12A, an opening 36 is provided on the first side surface 12C side of the viewing section 26. The light emitted from the light-emitting section 15 is not directly visible from the viewing section 26, but is visible as indirect light emitted from the opening 36. At this time, the light emitted from the light-emitting section 15 may be reflected by the housing 12 so as to be visible to the user, or may be reflected by a surface such as a wall of a room in which the liquid ejection device 11 is installed so as to be visible to the user.
In the modified example shown in FIG. 206, the outlet 25 through which the medium 99 is discharged is also provided on the top surface 12B, and the outlet 25 is exposed when the cover 24 is opened.

As shown in FIG. 207, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 207, the viewing section 26 is provided on the front surface 12A. The viewing section 26 is arranged inside the housing 12 and is configured not to be directly visible from the outside. Specifically, the viewing section 26 is arranged on the rear side of the front surface 12A. An opening 36 is provided on the front surface 12A at the bottom of the viewing section 26. The light emitted from the light-emitting section 15 is not directly visible from the viewing section 26, but is visible as indirect light emitted from the opening 36. At this time, the light emitted from the light-emitting section 15 may be reflected by the housing 12 so as to be visible to the user, or may be reflected by the surface of a table, floor, or the like on which the liquid ejection device 11 is installed so as to be visible to the user.
In the modified example shown in FIG. 207, the outlet 25 through which the medium 99 is discharged is also provided on the top surface 12B, and the outlet 25 is exposed when the cover 24 is opened.

As shown in FIG. 208, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 208, the visual confirmation part 26 is provided across the front surface 12A and the first side surface 12C. The visual confirmation part 26 is arranged inside the housing 12 and is configured not to be directly visible from the outside. Specifically, the visual confirmation part 26 is arranged on the back side of the front surface 12A and the first side surface 12C. An opening 36 is provided on the front surface 12A and the first side surface 12C at the lower part of the visual confirmation part 26. The light emitted from the light emitting part 15 is not directly visible from the visual confirmation part 26, but is visible as indirect light emitted from the opening 36. At this time, the light emitted from the light emitting part 15 may be reflected by the housing 12 so as to be visible to the user, or may be reflected by the surface of a table, floor, or the like on which the liquid ejection device 11 is installed so as to be visible to the user.
In the modified example shown in FIG. 208, the outlet 25 through which the medium 99 is discharged is also provided on the top surface 12B, and the outlet 25 is exposed when the cover 24 is opened.

As shown in FIG. 209, the liquid ejection device 11 may be modified. In the modified example shown in FIG. 209, the viewing section 26 is provided on the upper surface 12B. The viewing section 26 is arranged inside the housing 12 and is configured not to be directly visible from the outside. Specifically, the viewing section 26 is arranged on the back side of the upper surface 12B. An opening 36 is provided around the viewing section 26 on the upper surface 12B. The light emitted from the light-emitting section 15 is not directly visible from the viewing section 26, but is visible as indirect light emitted from the opening 36. At this time, the light emitted from the light-emitting section 15 may be reflected by the housing 12 so as to be visible to the user, or may be reflected by a surface such as a wall of a room in which the liquid ejection device 11 is installed so as to be visible to the user.
In the modified example shown in FIG. 209, the outlet 25 through which the medium 99 is discharged is provided on the front surface 12A.

In addition, in at least any one of the first to eighth embodiments of the liquid ejection device 11, a predetermined pattern may be imparted to the visibility cover 28. As an example, (a) to (e) of FIG. 210 show an example in which a predetermined pattern is imparted to the visibility cover 28 having the shape shown in (a) of FIG. 38.

The visibility cover 28 shown in FIG. 210(a) has a pattern of multiple lines arranged diagonally. The visibility cover 28 shown in FIG. 210(b) has a pattern of multiple lines arranged horizontally. The visibility cover 28 shown in FIG. 210(c) has a pattern of multiple lines arranged vertically. The visibility cover 28 shown in FIG. 210(d) has a pattern of multiple dots arranged vertically. The visibility cover 28 shown in FIG. 210(e) has a pattern of multiple inverted V-shaped lines arranged vertically.

Each of the patterns shown in (a) to (e) of Fig. 210 may be applied at an appropriate angle to the visibility cover 28, or may be applied upside down or left to right inverted. Furthermore, the spacing between lines and the spacing between dots in each pattern may be changed as appropriate.
In addition, each of the patterns shown in (a) to (e) of Figure 210 can be applied to the visibility cover 28 of any shape mentioned in the first to eighth embodiments, in addition to the visibility cover 28 of the shape shown in (a) of Figure 38.

The first to eighth embodiments described above can be further modified as follows. The first to eighth embodiments and the following modifications can be combined with each other to the extent that there is no technical contradiction.

The visual confirmation portion 26 may be provided at a position on the housing 12 that is inverted left and right with respect to a surface that is midway between the first side surface 12C and the second side surface 12D.
The visual confirmation portion 26 may be provided at a position on the housing 12 that is inverted upside down with respect to a surface midway between the top surface 12B and the bottom surface 12F.
The viewing portion 26 may be configured such that one viewing opening 27 exposes a plurality of light-guiding members 21 .
The liquid ejection device 11 may be configured such that a plurality of light guide members 21 guide the light emitted from one light emitting unit 15 .

The liquid ejection device 11 may be configured such that one light guide member 21 guides light emitted from a plurality of light emitting units 15 .
The control unit 16 may cause the container 14 to emit light in the first light emission pattern when the remaining amount of liquid contained in the container 14 is less than a predetermined amount.

The control unit 16 may cause the container 14 to emit light in the second light emission pattern when the remaining amount of liquid contained in the container 14 is equal to or greater than a predetermined amount.
- In the case where the storage section 14 stores multiple liquids and only one light-emitting section 15 is provided, the control section 16 may cause the light-emitting section 15 to emit light to notify the remaining amount of the liquid with the smallest remaining amount.

- When the storage unit 14 stores multiple liquids and only one light-emitting unit 15 is provided, the control unit 16 may cause the light-emitting unit 15 to emit light to sequentially notify the remaining amount of the multiple liquids stored in the storage unit 14. For example, when the storage unit 14 stores six types of liquid, the control unit 16 repeats the notification process six times to notify the remaining amount of each liquid.

When the container 14 contains a plurality of liquids and only one light-emitting unit 15 is provided, the control unit 16 may notify the user of the remaining amount of the selected liquid.
When the liquid ejection device 11 includes a plurality of light-emitting units 15, the colors of light emitted from the light-emitting units 15 may be different. For example, the color of light emitted from the light-emitting units 15 may correspond to the color of the liquid. In this way, the user can know which remaining amount of liquid is being notified by looking at the color of light emitted from the light-emitting unit 15.

The medium 99 is not limited to paper, but may be a plastic film, a metal film, a fabric, or the like.
The liquid ejected by the ejection unit 13 is not limited to ink, and may be, for example, a liquid in which particles of a functional material are dispersed or mixed in a liquid. For example, the ejection unit 13 may eject a liquid containing, in a dispersed or dissolved form, a material such as an electrode material or a pixel material used in the manufacture of liquid crystal displays, electroluminescence displays, and surface-emitting displays.

The technical ideas and effects that can be understood from the above-mentioned embodiment and modified examples are described below.

(A) The liquid ejection device includes an ejection unit that ejects liquid, a storage unit that stores the liquid to be supplied to the ejection unit, a light-emitting unit that emits light, and a control unit that causes the light-emitting unit to emit light in a light emission pattern that corresponds to the remaining amount of liquid stored in the storage unit.

According to this configuration, the remaining amount of liquid contained in the storage unit can be visually confirmed by looking at the light emission pattern of the light emitting unit. Since the remaining amount of liquid contained in the storage unit is notified by the light emitting unit emitting light, the user can know the remaining amount of liquid contained in the storage unit even in dark surroundings.

(B) In the above liquid ejection device, the control unit may cause the light-emitting unit to emit light in a first emission pattern when the remaining amount of liquid contained in the container is equal to or greater than a predetermined amount, and may cause the light-emitting unit to emit light in a second emission pattern when the remaining amount of liquid contained in the container is less than the predetermined amount.

This configuration allows the user to know whether the remaining amount of liquid contained in the container is equal to or greater than a predetermined amount, or less than a predetermined amount.

(C) In the above liquid ejection device, the first light emission pattern is a light emission pattern in which the light emitting unit lights up, and the second light emission pattern is a light emission pattern in which the light emitting unit blinks, and the control unit may shorten the blinking interval of the light emitting unit in the second light emission pattern as the remaining amount of liquid contained in the container decreases when the remaining amount of liquid contained in the container is less than the predetermined amount.

This configuration allows the user to be notified that the amount of liquid remaining in the container is low.

(D) The liquid ejection device includes a housing that houses the ejection unit, the storage unit, and the light-emitting unit, and a light-guiding member that is housed in the housing and guides the light emitted from the light-emitting unit, and the housing may have a viewing portion that exposes the light-guiding member so that it can be viewed from outside the housing.

With this configuration, the user can view the light emitted from the light-emitting unit from outside the housing through the viewing unit and the light-guiding member.

(E) In the above liquid ejection device, the visibility section may have a transparent or semi-transparent visibility cover that covers the light-guiding member.

This configuration reduces the risk of dust in the air adhering to the light-guiding member.

11...liquid ejection device, 12...housing, 12A...front surface, 12B...top surface, 12C...first side surface, 12D...second side surface, 12E...rear surface, 12F...bottom surface, 13...ejection section, 14...storage section, 15...light emitting section, 16...control section, 17...display section, 18...cassette, 19...liquid level sensor, 21...light guiding member, 24...cover, 25...discharge port, 26...visual section, 27...visual port, 28...visual cover, 29...exposed space, 31...light receiving end surface, 32...exposed end surface, 34...discharge cover, 36...opening, 38...power button, 99...medium.

Claims (4)

A discharge unit that discharges liquid;
a container that contains a liquid to be supplied to the ejection portion;
A light-emitting part that emits light;
a housing that houses the ejection unit, the storage unit, and the light-emitting unit;
a light guiding member that is housed in the housing and guides the light emitted from the light emitting unit;
the housing has a visibility portion that exposes the light guide member so as to be visible from outside the housing,
the visual confirmation portion has a transparent or semi-transparent visual confirmation cover that covers the light guide member,
The liquid ejection device, wherein the visibility cover is bent so as to be continuous with the front surface, both side surfaces, and the rear surface of the housing. The liquid ejection device according to claim 1 , wherein the visibility cover is provided on an upper surface thereof and further comprises a control unit that causes the light-emitting unit to emit light in an illumination pattern according to the remaining amount of liquid contained in the container. 3. The method according to claim 2, wherein the control unit causes the light emitter to emit light in a first light emission pattern when the remaining amount of liquid contained in the container is equal to or greater than a predetermined amount, and causes the light emitter to emit light in a second light emission pattern when the remaining amount of liquid contained in the container is less than the predetermined amount.
The liquid ejection device according to claim 1 . the first light-emitting pattern is a light-emitting pattern in which the light-emitting unit is turned on,
the second light-emitting pattern is a light-emitting pattern in which the light-emitting unit blinks,
The liquid ejection device according to claim 3, characterized in that when the remaining amount of liquid contained in the storage section is less than the predetermined amount, the control unit shortens the blinking interval of the light-emitting section in the second light-emitting pattern as the remaining amount of liquid contained in the storage section decreases.

Images