JP5929033B2 - Printing apparatus, control method and control program in printing apparatus - Google Patents

Description

  The present invention relates to a printing apparatus, a control method in the printing apparatus, and a control program.

The personal computer is installed with application software for creating text, images, and tables, and a printer driver for converting the created text, images, and tables into print image data. An inkjet printer, which is an example of a printing apparatus, receives image data for printing converted by a printer driver from a personal computer, and records an image on a recording medium such as paper.
If the size of the paper set by the user in the ink jet printer is smaller than the size of the printing image data, only a part of the printing image data is recorded on the paper. On the other hand, if the size of the paper set by the user in the ink jet printer is significantly larger than the size of the printing image data, a blank portion is formed outside the area where the printing image data is recorded. .
Therefore, the paper recorded in that way is not necessary, and the paper and ink for recording are wasted.

  Therefore, for example, in Patent Document 1, the printer driver acquires print setting information such as the paper size from the printing apparatus, and processes the original data when the print setting value differs from the print setting value such as the paper size set in the original data. A method has been proposed.

JP 2010-67106 A

  However, in the method of Patent Document 1, since the document data is processed, an image having a size intended by the user is not formed on the sheet. In addition, when the user sets paper of a size different from the print setting information in the printing apparatus, only a part of the print image data is recorded on the paper, or within the range where the print image data is recorded. A blank part may be formed on the outside. For this reason, since the paper recorded in such a manner is not necessary, there is a problem that the paper and ink for recording are wasted.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example 1] A transport unit that transports a recording medium in a transport direction, an image recording unit that records an image on the recording medium transported by the transport unit, and a movement in a direction orthogonal to the transport direction, A both-end detection sensor that detects both ends of the recording medium in the lateral direction, a movement amount detection unit that detects a movement amount that the both-end detection sensor moves between the both ends, and a horizontal length of the recording medium based on the movement amount A paper size calculation unit for calculating the height, an image size acquisition unit for acquiring a horizontal length of the image size of the image to be recorded on the recording medium, and a horizontal size of the recording medium calculated by the paper size calculation unit When the length and the horizontal length of the image size acquired by the image size acquisition unit are compared, and the horizontal length of the recording medium is approximate to the horizontal length of the image size, the image When the recording unit records an image on the recording medium, the recording unit ejects the recording medium, and the horizontal length of the recording medium and the horizontal length of the image size are not approximate, A printing apparatus comprising: a recording / conveying control unit that discharges the recording medium by the conveying unit without recording an image on the recording medium by an image recording unit.

  According to this configuration, the horizontal length of the recording medium calculated by the paper size calculation unit is compared with the horizontal length of the image size acquired by the image size acquisition unit, and the horizontal length of the recording medium and the image size are calculated. When the horizontal length is not approximate, a recording / conveying control unit that discharges the recording medium by the conveying unit without recording an image on the recording medium by the conveying unit and the image recording unit is provided. Thus, when the horizontal length of the image data is not approximate to the horizontal length of the recording medium, no image is recorded on the recording medium. Therefore, it is possible to prevent only a part of the image data from being recorded in the horizontal direction of the recording medium or a blank part from being formed outside the area where the image data is recorded. Accordingly, it is possible to prevent the recording medium and the ink for recording from being wasted.

  Application Example 2 A display unit for displaying characters and images is provided, and the recording / conveying control unit is arranged on the display unit when a horizontal length of the recording medium is not approximate to a horizontal length of the image size. The printing apparatus according to claim 1, wherein a warning indicating that a horizontal length of the recording medium is different from a horizontal length of the image size is displayed.

  According to this configuration, the user can be notified that the horizontal length of the recording medium is different from the horizontal length of the image size.

  Application Example 3 The both-end detection sensor detects the upper end on the downstream side and the lower end on the upstream side in the transport direction of the recording medium, and the paper size calculation unit is configured to detect the upper end and the lower end of the transport unit. A vertical length of the recording medium is calculated based on a conveyance amount therebetween, the image size acquisition unit acquires a vertical length of the image size, and the recording and conveyance control unit includes the paper size calculation unit. Is compared with the vertical length of the image size acquired by the image size acquisition unit, and the vertical length of the recording medium is compared with the vertical length of the image size. The printing apparatus displays a warning indicating that the vertical length of the recording medium and the vertical length of the image size are different from each other when is not approximated.

  According to this configuration, the recording / conveying control unit compares the vertical length of the recording medium calculated by the paper size calculating unit with the vertical length of the image size acquired by the image size acquiring unit. When the vertical length and the vertical length of the image size are not approximated, a warning indicating that the vertical length of the recording medium is different from the vertical length of the image size is displayed on the display unit. Accordingly, it is possible to notify the user that the vertical length of the image data is not approximate to the vertical length of the recording medium.

  In addition, when the recording medium is in an inclined posture, the both-end detection sensor can detect two positions in the direction orthogonal to the conveying direction at the upper end or the lower end of the recording medium and detect the inclination angle of the recording medium. . Therefore, the horizontal length and the vertical length of the recording medium can be calculated even when the recording medium is tilted.

  Application Example 4 An upper and lower end detection sensor that detects an upper end on the downstream side and a lower end on the upstream side in the conveyance direction of the recording medium is provided, and the paper size calculation unit is configured to provide a gap between the upper end and the lower end by the conveyance unit. The vertical length of the recording medium is calculated based on the transport amount of the recording medium, the image size acquisition unit acquires the vertical length of the image size, and the recording transport control unit is The calculated vertical length of the recording medium is compared with the vertical length of the image size acquired by the image size acquisition unit, and the vertical length of the recording medium is compared with the vertical length of the image size. When not approximate, the printing apparatus displays a warning indicating that the vertical length of the recording medium is different from the vertical length of the image size on the display unit.

  According to this configuration, the recording / conveying control unit compares the vertical length of the recording medium calculated by the paper size calculating unit with the vertical length of the image size acquired by the image size acquiring unit. When the vertical length and the vertical length of the image size are not approximated, a warning indicating that the vertical length of the recording medium is different from the vertical length of the image size is displayed on the display unit. Accordingly, it is possible to notify the user that the vertical length of the image data is not approximate to the vertical length of the recording medium.

  Further, the upper and lower end detection sensors are fixed in the transport direction. For this reason, since the detection accuracy of the upper end position and the lower end position in the transport direction is high, the detection accuracy of the vertical length of the recording medium is increased.

  Application Example 5 The image processing apparatus includes a selection unit that selects one of a plurality of operation instructions displayed together with the warning, and the recording and conveyance control unit is configured to perform the operation based on the operation instruction selected by the selection unit. The printing apparatus according to claim 1, wherein the printing apparatus controls conveyance and recording on a recording medium.

  According to this configuration, conveyance and recording of the recording medium can be controlled based on an operation instruction selected from a plurality of operation instructions.

  Application Example 6 The operation instruction records the image on the recording medium, replaces the recording medium, records the image on the replaced recording medium, or does not record the image on the recording medium. Any one of the above-mentioned printing apparatuses.

  According to this configuration, it is possible to select from various operation instructions as selection candidates.

  Application Example 7 In one job, when “record the image on the recording medium” is selected as the operation instruction, the recording and conveyance control unit performs the recording until the recording of the image by the job is completed. The above-described printing apparatus, wherein no warning is displayed.

  According to this configuration, since a warning is not displayed until one job is completed, a recording process can be quickly performed for each job.

  Application Example 8 The recording / conveying control unit is configured such that the attribute of the recording medium to be recorded is changed, the first recording medium to be continuously recorded, or the recording medium to be recorded in one job is changed. In any of the above cases, the printing apparatus compares the horizontal length of the recording medium with the horizontal length of the image size.

  According to this configuration, since the comparison between the horizontal length of the recording medium and the horizontal length of the image size is limited, the throughput can be improved.

  [Application Example 9] A transport unit that transports a recording medium in a transport direction, an image recording unit that records an image on the recording medium transported by the transport unit, and a moving unit in a direction orthogonal to the transport direction, A control method for a printing apparatus, comprising: a both-end detection sensor that detects both ends in a lateral direction of a recording medium; and a movement amount detection unit that detects a movement amount that the both-end detection sensor has moved between the both ends. A paper size calculating step of calculating a horizontal length of the recording medium based on a movement amount; an image size acquiring step of acquiring a horizontal length of an image size of the image to be recorded on the recording medium; and the paper size The horizontal length of the recording medium calculated by the calculating step is compared with the horizontal length of the image size acquired by the image size acquiring step, and the horizontal length of the recording medium and the image size are calculated. If the horizontal length of the recording medium is approximate, the image recording unit records an image on the recording medium, the recording unit ejects the recording medium, and the horizontal length of the recording medium is When the horizontal length of the image size is not approximate, a recording / conveying control step of discharging the recording medium by the conveying unit without recording the image on the recording medium by the image recording unit; A control method for a printing apparatus, comprising:

  According to this configuration, the horizontal length of the recording medium calculated by the paper size calculation step is compared with the horizontal length of the image size acquired by the image size acquisition step, and the horizontal length of the recording medium and the image size are calculated. When the horizontal length is not approximate, a recording / conveying control step of discharging the recording medium using the conveying unit without performing image recording on the recording medium by the conveying unit and the image recording unit is provided. Thus, when the horizontal length of the image data is not approximate to the horizontal length of the recording medium, no image is recorded on the recording medium. Therefore, it is possible to prevent only a part of the image data from being recorded in the horizontal direction of the recording medium or a blank part from being formed outside the area where the image data is recorded. Accordingly, it is possible to prevent the recording medium and the ink for recording from being wasted.

  [Application Example 10] A transport unit that transports a recording medium in a transport direction, an image recording unit that records an image on the recording medium transported by the transport unit, A control program that is executed in a printing apparatus that includes a both-end detection sensor that detects both ends in the horizontal direction of a recording medium, and a movement amount detection unit that detects a movement amount that the both-end detection sensor moves between the both ends. A paper size calculation function for calculating a horizontal length of the recording medium based on the movement amount; an image size acquisition function for acquiring a horizontal length of the image size of the image to be recorded on the recording medium; Comparing the horizontal length of the recording medium calculated by the paper size calculating function with the horizontal length of the image size acquired by the image size acquiring function; When the horizontal length of the image is close to the horizontal length of the image size, the image recording unit records an image on the recording medium, the transport unit discharges the recording medium, and the recording When the horizontal length of the medium does not approximate the horizontal length of the image size, the image recording unit does not record the image on the recording medium, and the recording unit discharges the recording medium. A control program for realizing a recording / conveying control function by a computer.

  According to this configuration, the horizontal length of the recording medium calculated by the paper size calculation function is compared with the horizontal length of the image size acquired by the image size acquisition function, and the horizontal length of the recording medium and the image size are calculated. When the horizontal length is not approximate, a recording / conveying control function for discharging the recording medium using the conveying unit without causing the conveying unit and the image recording unit to record an image on the recording medium is provided. Thus, when the horizontal length of the image data is not approximate to the horizontal length of the recording medium, no image is recorded on the recording medium. Therefore, it is possible to prevent only a part of the image data from being recorded in the horizontal direction of the recording medium or a blank part from being formed outside the area where the image data is recorded. Accordingly, it is possible to prevent the recording medium and the ink for recording from being wasted.

1 is a diagram illustrating a schematic configuration of a printing apparatus. FIG. 3 is a block diagram illustrating an electrical configuration of the printing apparatus. The figure which shows the detection position of the both ends of a paper. The flowchart of a control program. FIG. 9 is a block diagram illustrating an electrical configuration of a printing apparatus according to a second embodiment. The figure which shows the content of the message displayed on the display part. The flowchart of the control program in 2nd Embodiment. The figure for demonstrating the method to detect the horizontal length and vertical length of the inclined paper using a both-ends detection sensor. The flowchart of the control program in 3rd Embodiment. The flowchart of a conveyance process. The figure which shows the content of the message displayed on the display part. FIG. 10 is a block diagram illustrating an electrical configuration of a printing apparatus according to a fourth embodiment. The figure which shows the detection position of the upper end of a paper, and a lower end. FIG. 10 is a block diagram illustrating an electrical configuration of a printing apparatus according to a fifth embodiment. The figure which shows a user interface screen. The flowchart of the control program in 5th Embodiment.

(First embodiment)
The first embodiment will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a schematic configuration of an ink jet printer (hereinafter referred to as a printer) 1 as a printing apparatus according to the first embodiment.

  The paper P as a recording medium is conveyed in the conveyance direction D2 while being sandwiched between a driving roller (not shown) rotated by the paper feed motor 11 and a freely driven roller (not shown).

  The carriage 8 is fixed to a drive belt 5 stretched between the carriage motor 2 and the pulleys 3 and 4. By driving the carriage motor 2, the drive belt 5 rotates, and the carriage 8 moves along a guide shaft 7 fixed to the frame 6 in a direction D <b> 1 orthogonal to the transport direction.

  Ink cartridges 9 and 10 are detachably mounted on the carriage 8. The ink cartridge 9 contains black ink, and the ink cartridge 10 contains yellow, magenta, and cyan color inks.

  A liquid ejecting head (not shown) is provided on the paper P side of the carriage 8. Ink is supplied from the ink cartridges 9 and 10 to the liquid ejecting head, and droplets are ejected in the vertical direction D3 from a plurality of nozzles (not shown) provided in the liquid ejecting head.

  Ink is ejected from the liquid ejecting head in the vertical direction D3 between the liquid ejecting head that reciprocates in the direction D1 orthogonal to the transporting direction and the platen 12 in the transporting direction D2, and characters and images are printed on the paper. P is formed.

  The printer 1 includes a linear encoder configured to include a linear scale 14 fixed to the frame and a detector (not shown) fixed to the carriage 8 on the linear scale 14 side.

  On the linear scale 14, a plurality of straight lines extending in the vertical direction D3 are drawn in stripes at equal intervals. The detector optically detects a plurality of striped straight lines and detects them as pulses. The linear encoder can output the amount of movement of the carriage 8 as the number of pulses.

  On the paper P side of the carriage 8, a both-end detection sensor 13 including a light emitting unit such as a light emitting diode and a light receiving unit such as a phototransistor is provided. With the movement of the carriage 8 in the direction D1 orthogonal to the conveyance direction, the both end detection sensor 13 moves in the direction D1 orthogonal to the conveyance direction.

  FIG. 2 is a block diagram illustrating an electrical configuration of the printer 1. A computer 50 as an image processing apparatus is connected to the printer 1 via an interface (I / F) 24 of the control unit 20.

  An image processing program 51 that is a printer driver is installed in the computer 50. The printer driver converts character and image data created by the application program into print image data that can be printed by the printer 1. In the present embodiment, the image processing apparatus is shown as a computer 50 different from the printer 1, but the image processing apparatus itself may be integrated into the printer 1.

  The image recording unit 30 includes a liquid ejecting head, a drive circuit (not shown) for driving the liquid ejecting head, and the carriage motor 2. The transport unit 31 includes the paper feed motor 11. The movement amount detection unit 32 is configured by a linear encoder.

  The control unit 20 includes a CPU 21, a RAM 22, and a ROM 23. The CPU 21 reads the control program from the ROM 23 to the RAM 22 and executes it. The control unit 20 controls the image recording unit 30, the conveyance unit 31, the both end detection sensor 13, and the movement amount detection unit 32.

  From the computer 50, print image data converted by the printer driver is input to the control unit 20. The control unit 20 records character data and image data input from the computer 50 as an image on the paper P by performing drive control of the carriage motor 2 and the paper feed motor 11 and droplet discharge control of the liquid ejecting head. To do.

  FIG. 3 is a diagram showing detection positions at both ends of the paper P. As shown in FIG. A broken line W indicates a flow line in which the light receiving portion of the both end detection sensor 13 provided in the carriage 8 moves in a direction D1 orthogonal to the transport direction. When the paper P is fed by the transport unit 31, the both-end detection sensor 13 detects the detection positions q1 and q2 at both ends e1 and e2 of the paper P as the light receiving unit moves on the flow line W.

  In the movement amount detection unit 32, the both-end detection sensor 13 detects the detection positions q1 and q2 at each time point, and the movement amount that the both-end detection sensor 13 has moved between the detection positions q1 and q2 is detected as the number of pulses.

  The paper size calculation unit 25 calculates the length of the detection positions q1 and q2 in the direction D1 orthogonal to the transport direction based on the number of pulses acquired from the movement amount detection unit 32. Specifically, the length of the direction D1 orthogonal to the conveyance direction at both ends e1 and e2 is calculated by multiplying the acquired number of pulses by the scale interval drawn on the linear scale 14. Therefore, the paper size calculation unit 25 calculates the length in the direction D1 orthogonal to the conveyance direction of the paper P, that is, the horizontal length A of the paper P in FIG.

  The printer driver of the computer 50 outputs the image size, which is the horizontal length of the print image data, to the control unit 20 of the printer 1.

  The image size acquisition unit 26 acquires the image size sent from the printer driver.

  The recording / conveying control unit 27 compares the horizontal length A of the paper P calculated by the paper size calculation unit 25 with the horizontal length of the image size acquired by the image size acquisition unit 26.

  When the horizontal length of the paper P and the horizontal length of the image size are close to each other, the recording / conveying control unit 27 performs image recording on the paper P by the conveying unit 31 and the image recording unit 30.

  When the horizontal length of the paper P and the horizontal length of the image size are not approximate, the recording / conveying control unit 27 does not execute the image recording on the paper P by the conveying unit 31 and the image recording unit 30. The paper P is discharged using the transport unit 31.

  The paper size calculation unit 25, the image size acquisition unit 26, and the recording / conveyance control unit 27 are configured by a control program, and function when the CPU 21 reads the control program from the ROM 23 to the RAM 22 and executes it.

  Next, a control program processing method in this embodiment will be described. FIG. 4 is a flowchart of the control program in this embodiment.

  In step S <b> 100, the control unit 20 feeds the paper P using the transport unit 31. In step S <b> 110, the control unit 20 detects the detection positions q <b> 1 and q <b> 2 at both ends e <b> 1 and e <b> 2 of the paper P using the both-end detection sensor 13.

  In step S120, the paper size calculation unit 25 acquires, as the number of pulses, the movement amount that the both-end detection sensor 13 has moved between the detection positions q1 and q2 from the movement amount detection unit 32, and based on the acquired pulse number, FIG. The horizontal length A of the paper P is calculated.

  In step S130, the image size acquisition unit 26 acquires the horizontal length of the image size transmitted by the printer driver.

  In step S140, the recording / conveying control unit 27 determines whether the horizontal length A of the paper P calculated in step S120 is approximate to the horizontal length of the image size acquired in step S130.

  As a method for determining whether or not they are approximated, it is determined that the difference between the horizontal length A of the paper P and the horizontal length of the image size is within a predetermined difference. When the difference is exceeded, it is determined as not being approximated. The predetermined difference is set according to the reading accuracy and position accuracy of the both-end detection sensor, the formation accuracy of the paper P, and the like, for example, 4 mm. It should be noted that the approximation described here includes a case where the horizontal length A of the paper P and the horizontal length of the image size coincide with each other.

  When the horizontal length A of the paper P is approximate to the horizontal length of the image size (Yes), the process proceeds to step S150. When the horizontal length A of the paper P is not approximate to the horizontal length of the image size (No), the process proceeds to step S160.

  In step S <b> 150, the recording / conveying control unit 27 records an image on the paper P using the conveying unit 31 and the image recording unit 30.

  In step S <b> 160, the recording / conveying control unit 27 discharges the paper P using the conveying unit 31.

  As described above, the printer 1 according to the present embodiment includes the transport unit 31 that transports the paper P as a recording medium in the transport direction D2, and the image recording unit 30 that records an image on the paper P transported by the transport unit 31. Both-end detection sensor 13 that detects detection positions q1 and q2 of both ends e1 and e2 in the direction D1 orthogonal to the conveyance direction of the paper P, that is, the lateral direction of the paper P while moving in the direction D1 orthogonal to the conveyance direction, and both-end detection A movement amount detection unit 32 that detects a movement amount that the sensor 13 has moved between the detection positions q1 and q2, a paper size calculation unit 25 that calculates a lateral length A of the paper P based on the movement amount, and a printer driver. The transmitted image size acquisition unit 26 for acquiring the horizontal length of the image size of the image to be recorded on the paper P, and the paper P calculated by the paper size calculation unit 25 When the horizontal length A is compared with the horizontal length of the image size acquired by the image size acquisition unit 26 and the horizontal length of the paper P and the horizontal length of the image size are approximated, the image recording unit 30, the image is recorded on the paper P, and the paper P is discharged by the transport unit 31. When the horizontal length of the paper P and the horizontal length of the image size are not approximate, the paper by the image recording unit 30 is recorded. And a recording / conveying control unit 27 for discharging the paper P by the conveying unit 31 without recording an image on P.

  According to this configuration, when the horizontal length of the image data is not approximate to the horizontal length A of the paper P, no image is recorded on the paper P. Therefore, in the horizontal direction of the paper P, only a part of the image data can be recorded, or a blank portion can be prevented from being formed outside the area where the image data is recorded. Accordingly, it is possible to prevent the paper P and the ink for recording from being wasted.

  In addition, a transport unit 31 that transports the paper P in the transport direction D2, an image recording unit 30 that records an image on the paper P transported by the transport unit 31, and detection positions q1 of both ends e1 and e2 of the paper P in the lateral direction. , Q2 and a movement amount detection unit 32 for detecting a movement amount by which the both ends detection sensor 13 moves between the detection positions q1 and q2. A paper size calculation step for calculating the horizontal length A of the paper P based on the image, an image size acquisition step for acquiring the horizontal length of the image to be recorded on the paper P transmitted by the printer driver, and a paper size calculation The horizontal length A of the paper P calculated by the process and the horizontal length of the image size acquired by the image size acquisition unit 26 are compared, and the horizontal length of the paper P and the horizontal length of the image size are compared. Is approximated, the image recording unit 30 records an image on the paper P, the paper P is discharged by the transport unit 31, and the horizontal length of the paper P does not approximate the horizontal length of the image size. In this case, the image recording unit 30 does not record the image on the paper P, and the transport unit 31 discharges the paper P.

  In addition, a transport unit 31 that transports the paper P in the transport direction D2, an image recording unit 30 that records an image on the paper P transported by the transport unit 31, and detection positions q1 of both ends e1 and e2 of the paper P in the lateral direction. , Q2 and a movement amount detection unit 32 that detects a movement amount by which the both end detection sensor 13 has moved between the detection positions q1 and q2. A paper size calculation function for calculating the horizontal length A of the paper P based on the amount of movement, an image size acquisition function for acquiring the horizontal length of the image to be recorded on the paper P transmitted by the printer driver, The horizontal length A of the paper P calculated by the paper size calculation function is compared with the horizontal length of the image size acquired by the image size acquisition function. When the horizontal length of the image size is approximate, the image recording unit 30 records an image on the paper P, the paper P is discharged by the transport unit 31, and the horizontal length of the paper P and the image size are set. When the horizontal length is not approximate, the recording / conveying control function for discharging the paper P by the transport unit 31 without recording the image on the paper P by the image recording unit 30 is realized by a computer.

(Second Embodiment)
In the second embodiment, a case will be described in which the user is notified when the image size of the print image data transmitted from the printer driver is different from the paper size of the paper P fed to the printing apparatus. In the following description, the same parts as those already described are denoted by the same reference numerals and description thereof is omitted.

  FIG. 5 is a block diagram showing an electrical configuration of the printer 1a in the present embodiment. FIG. 5 is obtained by adding a display unit 33 to the block diagram showing the electrical configuration of the printer 1 in the first embodiment described with reference to FIG. Other configurations of the printer 1a in the present embodiment are the same as the configurations of the printer 1 in the first embodiment.

  The printer 1 a includes a display unit 33 that is configured by a liquid crystal panel or the like and is electrically connected to the control unit 20.

  When the horizontal length A of the paper P in FIG. 3 is not approximate to the horizontal length of the image size, the recording / conveying control unit 27 does not execute the image recording on the paper P by the image recording unit 30. The paper P is discharged using the transport unit 31 and a message indicating that the horizontal length A of the paper P is different from the horizontal length of the image size is displayed on the display unit 33 as a warning.

  FIG. 6 is a diagram showing the content of the message displayed on the display unit 33. For example, as shown in FIG. 6, a message “The horizontal length of the paper set in the printer is not the paper size set by the printer driver” is displayed.

  Next, a control program processing method in this embodiment will be described. FIG. 7 is a flowchart of the control program in this embodiment. FIG. 7 is obtained by adding step S145 to the flowchart in the first embodiment described with reference to FIG.

  The processing method from step S100 to step S130 is the same as the processing method described using the flowchart in the first embodiment of FIG. In step S140, when the horizontal length A of the paper P is approximate to the horizontal length of the image size (Yes), the process proceeds to step S150. When the horizontal length A of the paper P is not approximate to the horizontal length of the image size (No), the process proceeds to step S145.

  In step S145, for example, as shown in FIG. 6, a message indicating that the horizontal length A of the paper P is different from the horizontal length of the image size is displayed as a warning on the display unit 33, and the process proceeds to step S160. The processing method in step S150 and step S160 is the same as the processing method in step S150 and step S160 in the flowchart in the first embodiment of FIG.

  As described above, the printer 1a of the present embodiment includes the display unit 33 that displays characters and images, and the recording / conveying control unit 27 has the horizontal length A of the paper P and the image size transmitted by the printer driver. When the horizontal length is not approximated, a message indicating that the horizontal length A of the paper P is different from the horizontal length of the image size is displayed on the display unit 33 as a warning.

  According to this configuration, the user can be notified that the horizontal length A of the paper P fed to the printer 1a is different from the horizontal length of the image size.

  In the present embodiment, a message is displayed as a warning on the display unit 33, but an image such as an illustration may be displayed on the display unit 33 for warning.

(Third embodiment)
In the third embodiment, a case where the horizontal length and the vertical length of the inclined paper P are detected will be described. The electrical configuration of the printer of this embodiment is the same as the electrical configuration of the printer 1a of the second embodiment shown in FIG.

  FIG. 8 is a diagram for explaining a method of detecting the horizontal length and the vertical length of the inclined paper P using the both-end detection sensor 13. First, a method for calculating the inclination angle of the paper P will be described.

  Broken lines r1 and r2 indicate flow lines in which the both end detection sensor 13 moves in a direction D1 orthogonal to the transport direction. The flow line r2 is a position where the paper P is transported by a transport amount L from the position of the flow line r1 in the transport direction D2.

  An alternate long and short dash line t1 indicates an intermediate position between the flow line r1 and the flow line r2 in the transport direction D2. Accordingly, the distance from the flow line r1 to the intermediate position t1 in the transport direction D2 is one half of the transport amount L.

  Similarly, broken lines r3 and r4 indicate flow lines in which the both-end detection sensor 13 moves in a direction D1 orthogonal to the transport direction. The flow line r4 is a position where the paper P is transported by the transport amount L from the position of the flow line r3 in the transport direction D2.

  A one-dot chain line t2 indicates an intermediate position between the flow line r3 and the flow line r4 in the transport direction D2. Accordingly, the distance from the flow line r3 to the intermediate position t2 in the transport direction D2 is one half of the transport amount L.

  As shown in FIG. 8, the upper end e3 on the downstream side in the transport direction D2 of the paper P is inclined at an inclination angle θ with respect to the flow lines r1 and r2. Accordingly, the lower end e4 on the upstream side in the conveyance direction D2 of the paper P is also inclined at an inclination angle θ with respect to the flow lines r3 and r4.

  When the both ends detection sensor 13 is at the position of the flow line r1, the both ends detection sensor 13 moves on the flow line r1 and detects the detection position k1 at the upper end e3. When the both end detection sensor 13 is at the position of the flow line r2, the both end detection sensor 13 moves on the flow line r2, and detects the detection position k2 at the upper end e3.

Assuming that the distance between the detection position k1 and the detection position k2 in the direction D1 perpendicular to the conveyance direction is M, as shown in FIG. 8, the inclination angle θ, the distance M between the detection position k1 and the detection position k2, and the conveyance amount L Is expressed by the following equation.
tan θ = L / M (1)

  When the both end detection sensor 13 is at the position of the flow line r3, the both end detection sensor 13 moves on the flow line r3 and detects the detection position k3 at the lower end e4. When the both end detection sensor 13 is at the position of the flow line r4, the both end detection sensor 13 moves on the flow line r4 and detects the detection position k4 at the lower end e4.

  Similarly, at the lower end e4 of the paper P, the inclination angle θ is calculated based on the distance M between the detection positions k3 and k4 in the direction D1 orthogonal to the transport direction and the transport amount L from the broken line r3 to the broken line r4. Can do.

  Next, a method for calculating the vertical length of the paper P will be described. The intersection between the upper end e3 and the one-dot chain line t1 is defined as the upper end position s1, and the intersection between the lower end e4 and the one-dot chain line t2 is defined as the lower end position s2.

  Assuming that the intersection point between the upper end position s1 and the perpendicular to the alternate long and short dash line t2 is v, the distance C from the upper end position s1 to the intersection point v is the conveyance when the sheet P is conveyed from the position of the alternate long and short dash line t1 to the position of the alternate long and short dash line t2. Amount.

The angle at which the straight line from the upper end position s1 to the intersection point v and the straight line from the upper end position s1 to the lower end position s2 intersect is θ. Therefore, the relationship between the distance C from the upper end position s1 to the intersection point v, the distance from the upper end position s1 to the lower end position s2, that is, the vertical length B of the paper P, and the inclination angle θ is expressed by the following equation.
C = B · cos θ (2)
Accordingly, the vertical length B of the paper P is calculated from the following equation.
B = C / cos θ (3)

  Since the inclination angle θ is set from the distance M and the carry amount L as shown in the equation (1), the paper size calculation unit 25 in FIG. 2 sets the vertical length B of the paper P to the equation (3). Can be calculated.

  Next, a method for calculating the horizontal length of the inclined paper P will be described.

  A broken line w indicates a flow line when the light receiving unit of the both-end detection sensor 13 moves in a direction D1 orthogonal to the transport direction at a position close to the upper end e3. The both ends detection sensor 13 moves on the flow line w, and detects the detection positions q1 and q2 at both ends e1 and e2.

  2 obtains the movement amount between the detection positions q1 and q2 from the movement amount detection unit 32, and calculates the distance N between the detection positions q1 and q2 in the direction D1 orthogonal to the transport direction.

Since the paper P is inclined at the inclination angle θ, the paper size calculation unit 25 calculates the lateral length A of the paper P from the following equation based on the distance N between the detection positions q1 and q2 and the inclination angle θ. To do.
A = N · cos θ (4)

  Next, a control program control method according to the present embodiment will be described. FIG. 9 is a flowchart of the control program in the present embodiment. In step S <b> 200, the control unit 20 feeds the paper P using the transport unit 31.

  In step S210, the upper end position s1 at the upper end e3 of the paper P is detected using the both end detection sensor by the method described with reference to FIG.

  In step S220, the control unit 20 detects the detection positions q1 and q2 at both ends e1 and e2 of the paper P using the both-end detection sensor by the method described with reference to FIG.

  In step S230, the paper size calculation unit 25 acquires the distance N between the detection positions q1 and q2 from the movement amount detection unit 32, and calculates the lateral length A of the paper P from Expression (4).

  In step S240, the image size acquisition unit 26 acquires the horizontal length and the vertical length of the image size transmitted by the printer driver.

  In step S250, the recording / conveying control unit 27 determines whether or not the horizontal length A of the paper P calculated in step S230 is approximate to the horizontal length of the image size acquired in step S240.

  When the horizontal length A of the paper P and the horizontal length of the image size are approximate (Yes), the process proceeds to step S270. When the horizontal length A of the paper P is not approximate to the horizontal length of the image size (No), the process proceeds to step S260.

  In step S270, the recording / conveying control unit 27 records an image on the paper P using the conveying unit 31 and the image recording unit 30, and the process proceeds to step S330.

  In step S260, as described in the second embodiment, the message shown in FIG. 6 indicating that the horizontal length A of the paper P is different from the horizontal length of the image size is displayed on the display unit 33 as a warning. Proceed to step S280.

  In step S280, the control unit 20 performs a conveyance process. FIG. 10 is a flowchart of the conveyance process. In step S500, the control unit 20 initializes a previous detection distance that is a distance in a direction D1 orthogonal to the transport direction of the paper P detected last time. In step S510, the control unit 20 uses the transport unit 31 to transport the paper P in the transport direction D2 by a predetermined transport amount.

  In step S520, the control unit 20 detects both ends e1, e2 using the both ends detection sensor 13. In step S530, the control unit 20 acquires the movement amount between both ends e1 and e2 in the direction D1 orthogonal to the transport direction of the paper P from the movement amount detection unit 32, and sets the distance between both ends e1 and e2 as the latest detection distance. calculate.

  In step S540, the latest detection distance of both ends e1, e2 calculated in step S530 is compared with the previous detection distance stored in the RAM 22. When the difference between the latest detection distance and the previous detection distance is within a predetermined range (Yes), the process proceeds to step S550. When the difference between the latest detection distance and the previous detection distance exceeds a predetermined range (No), it is determined that the both-end detection sensor 13 has reached the position of the lower end 4e, and the process returns to step S290 in FIG. The difference between the latest detection distance and the previous detection distance is set based on the inclination angle of the paper and the formation accuracy of the paper P, and is set to 3 mm, for example.

  In step S550, the latest detection distance calculated in step S530 is stored in the RAM 22 of the control unit 20 in FIGS. 2 and 5 as the previous detection distance, and the process returns to step S510.

  In step S290, the lower end position s2 of the lower end e4 of the paper P is detected using the both end detection sensor 13 by the method described with reference to FIG.

  In step S300, the paper size calculation unit 25 calculates the vertical length B of the paper P by the method described with reference to FIG.

  In step S310, the recording / conveying control unit 27 determines whether or not the calculated vertical length B of the paper P is approximate to the vertical length of the image size acquired in step S240.

  When the vertical length B of the paper P is close to the vertical length of the image size (Yes), the process proceeds to step S330. When the vertical length B of the paper P is not approximate to the vertical length of the image size (No), the process proceeds to step S320.

  In step S320, a message indicating that the horizontal length A of the paper P is different from the horizontal length and the vertical length of the image size is displayed as a warning on the display unit 33, and the process proceeds to step S330.

  FIG. 11 is a diagram showing the content of the message displayed on the display unit 33. For example, as shown in FIG. 11, a message “The horizontal and vertical lengths of the paper set in the printer are not the paper size set by the printer driver” is displayed. In step S <b> 330, the recording / conveying control unit 27 discharges the paper P using the conveying unit 31.

  As described above, the both-end detection sensor 13 in the printer according to this embodiment detects the upper end e3 on the downstream side and the lower end e4 on the upstream side in the transport direction D2 of the paper P, and the paper size calculation unit 25 The vertical length of the paper P is calculated based on the transport amount between the upper end e3 and the lower end e4 by the transport unit 31, and the image size acquisition unit 26 transmits the image size of the image to be recorded on the paper P transmitted by the printer driver. The recording and transport control unit 27 obtains the vertical length B of the paper P calculated by the paper size calculation unit 25 and the vertical length of the image size acquired by the image size acquisition unit 26. When the vertical length B of the paper P and the vertical length of the image size are not approximated, the vertical length B of the paper P and the vertical length of the image size are different on the display unit 33. Indicate that To display the tell.

  According to this configuration, when the vertical length of the image data and the vertical length B of the paper P are not approximated, the vertical length of the image data and the vertical length B of the paper P are approximated. The user can be notified that it has not.

  In addition, the both-end detection sensor 13 detects two positions in the direction D1 perpendicular to the transport direction at the upper end e3 or the lower end e4 of the paper P when the paper P is in an inclined posture with respect to the transport direction D2. The inclination angle θ of P can be detected. Therefore, even when the paper P is in an inclined posture, the horizontal length A and the vertical length B of the paper P can be calculated.

(Fourth embodiment)
In the third embodiment, the case where the vertical length of the paper P is detected using the both-end detection sensor 13 has been described. In the fourth embodiment, the vertical length of the paper P is detected using the upper and lower end detection sensor 34. A case of detecting the error will be described.

  FIG. 12 is a block diagram showing an electrical configuration of the printer 1b in the present embodiment. FIG. 12 is obtained by adding upper and lower end detection sensors 34 to the block diagram showing the electrical configuration of the printer 1a in the second embodiment described with reference to FIG. Other configurations of the printer 1b in the present embodiment are the same as the configurations of the printer 1a in the second embodiment.

  The upper and lower end detection sensor 34 includes a light emitting unit such as a light emitting diode and a light receiving unit such as a phototransistor. The upper and lower end detection sensors 34 are located on the upstream side in the conveyance direction D2 of the carriage 8 and are provided at positions fixed to the frame 6.

  FIG. 13 is a diagram illustrating detection positions of the upper end and the lower end of the paper P. A broken line Z in FIG. 13 indicates a flow line in which the light receiving unit of the upper and lower end detection sensor 34 moves relative to the paper P as the paper P is transported in the transport direction D2. The upper and lower end detection sensor 34 detects the detection position u1 at the upper end e3 as the paper P is fed. Further, when the paper P is conveyed, the upper and lower end detection sensor 34 detects the detection position u2 at the lower end e4.

  The paper size calculation unit 25 in FIG. 12 determines the distance from the detection position u1 to the detection position u2 in the transport direction D2, that is, the vertical length of the paper P, based on the transport amount by which the paper P is transported from the detection position u1 to the detection position u2. The length B is calculated.

  The processing method of the control program of this embodiment is demonstrated with reference to the flowchart of FIG. 9 used in 3rd Embodiment. In step S200, the paper P is fed. In step S210, as described above, the detection position u1 at the upper end e3 of the paper P in FIG. 13 is detected using the upper and lower end detection sensor 34, and is detected as the upper end position.

  The processing method from step S220 to step S280 is the same as the processing method described in the third embodiment with reference to FIG. In step S290, as described above, the detection position u2 at the lower end e4 of the paper P in FIG. 13 is detected using the upper and lower end detection sensor 34, and is detected as the lower end position.

  In step S300, as described above, the paper size calculation unit 25 determines the distance from the detection position u1 to the detection position u2 in the transport direction D2, based on the transport amount by which the paper P is transported from the detection position u1 to the detection position u2. That is, the vertical length B of the paper P is calculated.

  The processing method from step S310 to step S330 is the same as the processing method described in the third embodiment.

  The printer 1b of the present embodiment includes an upper and lower end detection sensor 34 that is fixed in the transport direction D2 and detects a downstream upper end e3 and an upstream lower end e4 in the transport direction D2 of the paper P, and a paper size calculation unit 25. Calculates the vertical length of the paper P based on the transport amount between the upper end e3 and the lower end e4 by the transport unit 31, and the image size acquisition unit 26 transmits the image to be recorded on the paper P transmitted by the printer driver. The vertical length of the image size is acquired, and the recording / conveyance control unit 27 calculates the vertical length of the paper P calculated by the paper size calculation unit 25 and the vertical length of the image size acquired by the image size acquisition unit 26. When the vertical length of the paper P and the vertical length of the image size are not approximated, the display unit 33 shows that the vertical length B of the paper P is different from the vertical length of the image size. Warning to display.

  According to this configuration, when the vertical length of the image data and the vertical length B of the paper P are not approximated, the vertical length of the image data and the vertical length B of the paper P are approximated. The user can be notified that it has not.

  The upper and lower end detection sensors 34 are fixed in the transport direction D2. Therefore, since the detection accuracy of the upper end position and the lower end position in the transport direction D2 is high, the detection accuracy of the vertical length of the paper P is increased.

(Fifth embodiment)
In the fifth embodiment, when the image size of the printing image data generated by the printer driver is different from the paper size of the paper P fed to the printing apparatus, the user is notified of a warning and the user The manner in which the operation instruction for the warning is received will be described.
FIG. 14 is a block diagram illustrating an electrical configuration of a printer 1c according to the fifth embodiment. The printer 1 c further includes a selection unit 35 that is electrically connected to the control unit 20.
In the fifth embodiment, when the size of the fed paper P is not close to the image size of the print job, the display unit 33 displays a plurality of selectable selection buttons 37 together with a message as shown in FIG. The selection unit 35 accepts the user's selection from the selection buttons 37. In addition, the display part 33 and the selection part 35 assume the touch panel (not shown) with which the printer 1c is provided.
That is, the user presses a desired selection button 37 in accordance with a user interface (UI) screen 36 displayed on the touch panel, and presses the decision button 38 to give an instruction corresponding to the selected selection button 37 to the CPU 21. be able to. The recording / conveying control unit 27 controls operations related to printing and conveyance of the paper P based on this instruction.

In the fifth embodiment, the following three instructions are assumed as selectable instructions with the selection button 37.
1. “Print on the current paper”... Prints the image drawn by the print job on the supplied paper P without scaling, and discharges the printed paper P regardless of the image size to be printed. Therefore, a part of the image may not be printed on the paper P. This determination is valid within one print job. Therefore, when printing a plurality of pages in one print job, the user interface screen 36 is not displayed on the subsequent pages by making this selection on the first page.
2. “Replace and print the paper set in the printer”... The user replaces the paper P set in the paper cassette or tray of the printer 1c with a paper P that matches the image size. A UI screen (not shown) for confirming the completion of replacement is displayed on the touch panel. When the replacement of the paper P is completed, the user performs an operation indicating the completion of the replacement. In response to this operation, the CPU 21 confirms the size of the fed paper P again.
3. “Cancel printing”... The CPU 21 cancels the print job comparing the paper sizes and cancels the print processing.

In the fifth embodiment, the comparison of the paper sizes is executed only when a predetermined flag is ON in order to improve the throughput related to the printing process of the printer 1c. The predetermined flag is changed in the following cases.
1. When the paper P is re-set in the printer 1c: When the paper cassette is detached from the printer 1c, when the attributes such as the size and type of the paper set in the tray are changed, the tray for feeding paper from a plurality of trays Or the size of the paper to be printed in one print job is changed, the flag for comparing the paper sizes is turned ON.
2. First one when printing a plurality of sheets: When the user instructs printing of a plurality of sheets, the flag for comparing the paper size only for the first first sheet is turned on, and the second and subsequent sheets are turned off. When printing of one print job is completed, the flag is set to ON.
3. When printing is performed regardless of the paper size, such as when “print on current paper” is selected on the user interface screen 36, the flag for comparing the paper sizes is turned OFF.

FIG. 16 is a flowchart of a control program in the fifth embodiment.
In response to the sheet P being fed to the printer 1c, the CPU 21 makes a determination based on a predetermined flag (step S200).
Here, if the predetermined flag is ON, that is, if the paper feed is the first sheet, the paper P has been replaced, or the printing is not forced (Yes in step S200), the CPU 21 performs non-overlapping feeding. It is set to perform paper (single paper feed sequence) (step S220).
Subsequently, the CPU 21 calculates the paper size of the fed paper P and compares it with the image size of the image indicated by the print job (step S222).
Here, when the CPU 21 determines that the paper size of the paper P and the image size of the image indicated by the print job are not approximate (No in step S224), the CPU 21 does not print on the paper P for which the paper size has been calculated. It discharges (step S226).

Next, the CPU 21 displays a paper size error (step S228) and accepts an instruction from the user (step S230).
Here, when an instruction to cancel printing is received from the user (“print cancel” in step S232), the print job is discarded (step S236), and the series of processing ends.
If the user receives an instruction to print on the current sheet (“print as it is” in step S232), the process returns to step S200.
When the user receives an instruction to replace the paper P and print (“Replace paper” in step S232), the user replaces the paper P (step S234) and returns to step S200.
In step S200, when the predetermined flag is OFF (No in step S200), the CPU 21 sets to perform the overlap feeding (continuous feeding sequence) (step S210), and the process proceeds to step S215.

If the CPU 21 determines in step S224 that the paper size of the paper P is similar to the image size of the image indicated by the print job (Yes in step S224), the process proceeds to step S215.
In step S215, the print image is printed on the paper P based on the print job and discharged, and the series of processing ends.
With the above processing, when the size of the fed paper P is not close to the image size of the print job, printing can be performed on the paper P, the paper P can be replaced, or printing can be canceled according to a user instruction. Therefore, various options can be provided to the user.
Further, since the size check of the paper P is selectively performed, the throughput of the printing process can be improved as compared with the case where all the papers P are compared.

In the fifth embodiment, the comparison of the paper sizes assumes a comparison in the horizontal direction of the paper P, but is not limited to this, and as described in the third embodiment, both in the horizontal direction and the vertical direction. You may compare.
Further, in the fifth embodiment, it is assumed that the printer 1c does not have the paper P reverse function, but it is also possible to assume the paper P reverse function. In this case, instead of the blank paper discharge in step S226, the paper P may be returned to the printing start position of the printer 1c.
Further, the user interface screen 36 may display information regarding the calculated paper size. Further, the message displayed on the user interface screen 36 may be in a state that can be set in advance by the user.
Further, the comparison of the paper sizes is not limited to the first one to print a plurality of sheets, and the user may set a plurality of sheets.
Further, when an error other than a paper size error occurs in the printer 1c, a paper size comparison process may be executed.
The printer 1c is not limited to a state connected to the computer 50 having a printer driver, and a so-called stand-alone state in which the printer 1c itself has a printer driver function can be assumed.

  DESCRIPTION OF SYMBOLS 1,1a, 1b, 1c ... Printer as a printing apparatus, e1, e2 ... Both ends, e3 ... Upper end, e4 ... Lower end, 25 ... Paper size calculation part, 27 ... Recording conveyance control part, 30 ... Image recording part, 31 ... Conveying unit, 32 ... movement amount detecting unit, 33 ... display unit, 34 ... upper / lower end detection sensor, 35 ... selecting unit, 36 ... user interface screen, 37 ... selection button, 38 ... decision button, 50 ... computer, 51 ... image Processing program: A: horizontal length of paper, B: vertical length of paper, D1: direction orthogonal to the transport direction, D2: transport direction, P: paper as a recording medium.

Claims (3)

A transport unit for transporting the recording medium in the transport direction;
An image recording unit for recording an image on the recording medium conveyed by the conveyance unit;
While moving in a direction orthogonal to the transport direction, both ends detection sensor that detects both ends in the lateral direction of the recording medium;
A movement amount detection unit for detecting a movement amount by which the both end detection sensor has moved between the both ends;
A paper size calculation unit for calculating a horizontal length of the recording medium based on the movement amount;
An image size acquisition unit for acquiring a horizontal length of an image size of the image to be recorded on the recording medium;
Comparing the horizontal length of the recording medium calculated by the paper size calculation unit with the horizontal length of the image size acquired by the image size acquisition unit;
When the horizontal length of the recording medium is approximate to the horizontal length of the image size, the image recording unit records an image on the recording medium, and the transport unit discharges the recording medium. ,
When the horizontal length of the recording medium does not approximate the horizontal length of the image size, the image recording unit does not record an image on the recording medium, and the recording unit discharges the recording medium. A recording conveyance control unit;
A display unit;
A reception unit that receives one of a plurality of operation instructions displayed on the display unit,
The recording and conveying control unit conveys and records the recording medium based on the operation instruction received by the receiving unit when the horizontal length of the recording medium is not approximate to the horizontal length of the image size. Control
As the operation instruction, when receiving an instruction to record without replacing the recording medium, performing a multiple I combined feed,
On the other hand, when the instruction to replace the recording medium is received as the operation instruction, the first sheet and the second sheet are not overlapped and fed before the first sheet is recorded. Comparing the lengths;
A printing apparatus characterized by the above. A transport unit that transports the recording medium in the transport direction, an image recording unit that records an image on the recording medium transported by the transport unit, and a lateral direction of the recording medium while moving in a direction orthogonal to the transport direction A method of controlling a printing apparatus, comprising: a both-end detection sensor that detects both ends of the sensor; and a movement amount detection unit that detects a movement amount of the movement of the both-end detection sensor between the both ends.
A paper size calculating step of calculating a horizontal length of the recording medium based on the movement amount;
An image size acquisition step of acquiring a horizontal length of the image size of the image to be recorded on the recording medium;
Comparing the horizontal length of the recording medium calculated by the paper size calculation step with the horizontal length of the image size acquired by the image size acquisition step;
When the horizontal length of the recording medium is approximate to the horizontal length of the image size, the image recording unit records an image on the recording medium, and the transport unit discharges the recording medium. ,
When the horizontal length of the recording medium does not approximate the horizontal length of the image size, the image recording unit does not record an image on the recording medium, and the recording unit discharges the recording medium. Recording transport control process,
Receiving a user from one of a plurality of operation instructions,
In the recording / conveying control step, when the horizontal length of the recording medium is not approximate to the horizontal length of the image size, the recording / conveying and recording on the recording medium is performed based on the operation instruction received in the receiving step. Control
As the operation instruction, when receiving an instruction to record without replacing the recording medium, performing a multiple I combined feed,
On the other hand, when the instruction to replace the recording medium is received as the operation instruction, the first sheet and the second sheet are not overlapped and fed before the first sheet is recorded. Comparing the lengths;
A control method for a printing apparatus. A transport unit that transports the recording medium in the transport direction, an image recording unit that records an image on the recording medium transported by the transport unit, and a lateral direction of the recording medium while moving in a direction orthogonal to the transport direction A control program that is executed in a printing apparatus comprising: a both-end detection sensor that detects both ends of the sensor; and a movement amount detection unit that detects a movement amount of the movement of the both-end detection sensor between the both ends.
A paper size calculation function for calculating a horizontal length of the recording medium based on the movement amount;
An image size acquisition function for acquiring a horizontal length of the image size of the image to be recorded on the recording medium;
Comparing the horizontal length of the recording medium calculated by the paper size calculation function and the horizontal length of the image size acquired by the image size acquisition function;
When the horizontal length of the recording medium is approximate to the horizontal length of the image size, the image recording unit records an image on the recording medium, and the transport unit discharges the recording medium. ,
When the horizontal length of the recording medium does not approximate the horizontal length of the image size, the image recording unit does not record an image on the recording medium, and the recording unit discharges the recording medium. Recording transport control function,
Receiving a user from one of a plurality of operation instructions,
In the recording / conveying control step, when the horizontal length of the recording medium is not approximate to the horizontal length of the image size, the recording / conveying and recording on the recording medium is performed based on the operation instruction received in the receiving step. Control
As the operation instruction, when receiving an instruction to record without replacing the recording medium, performing a multiple I combined feed,
On the other hand, when the instruction to replace the recording medium is received as the operation instruction, the first sheet and the second sheet are not overlapped and fed before the first sheet is recorded. Comparing the lengths;
A control program characterized in that it is realized by a computer.