JP3622166B2 - Image recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image recording apparatus, and more particularly to an image recording apparatus that winds a recording sheet around a drum and writes an image.
[0002]
[Prior art]
(Prior Art 1) Conventionally, when recording paper is supplied to the drum, the leading edge of the recording paper is positioned by a positioning member provided on the drum side, and after the writing of the image on the recording paper is completed, the recording paper is An image recording apparatus that peels off is known.
[0003]
(Prior Art 2) Conventionally, there has been an image recording apparatus in which the leading end of a recording paper is positioned by positioning provided on the drum, a squeeze roller is provided at a position different from the positioning location, and the recording paper is in close contact with the drum. Are known.
[0004]
(Prior Art 3) Conventionally, a recording means for recording an image is wound around the outer peripheral surface, the drum means having the horizontal axis as the X axis and the vertical as the Y axis with the rotation center axis as the origin, and the X axis and Y axis. There is known an image recording apparatus in which a light source for image writing is arranged on the X axis on the first quadrant side of the coordinates constituted by and the leading edge of the recording paper is positioned on the outer peripheral surface of the drum means on the second quadrant side on the X axis. It has been.
[0005]
(Prior Art 4) A recording paper for recording an image is wound around the outer peripheral surface of the drum, supplied at one end of the recording paper in the normal rotation direction of the drum, and discharged at the other end of the recording paper in the same rotation direction as the drum. An image recording apparatus that writes an image on a recording sheet is known.
[0006]
(Prior Art 5) Image recording is performed by a member that winds a recording sheet for recording an image around the outer peripheral surface of the drum and positions the leading end of the recording sheet on the drum and a member that separates the recording sheet from the drum. The device is known.
[0007]
[Problems to be solved by the invention]
However, as a problem of (Prior Art 1), if there is a positioning member on the drum side, when the drum is rotated at a high speed, unbalance is likely to occur and vibration or the like is difficult, and processing of the positioning member is difficult. It is difficult to accurately align the center of gravity of the drum with the rotation axis of the drum.
[0008]
As a problem of (Prior Art 2), if the positioning and the position of the squeeze roller are misaligned, the leading edge of the recording paper is likely to be displaced at the start of squeeze.
[0009]
As problems of (Prior Art 3), the size of the image recording apparatus becomes large, and the flow of recording paper in the next process, such as development processing, becomes smooth.
[0010]
As a problem of (Prior Art 4), when the recording paper is small, the time from the separation of the recording paper to the start of feeding the next recording paper is lengthened, and the processing capacity of the apparatus is lowered.
[0011]
As a problem of (Prior Art 5), since the positioning member and the peeling member from the recording paper drum are separate members, the cost increases.
[0012]
The present invention has been made in view of the above problems, the present onset Ming object is also stable by rotating the drum at a high speed, the leading edge of the recording paper to provide an image recording apparatus capable of accurately positioning (conventional And an image recording apparatus that is stable even when the drum is rotated at high speed, the leading end of the recording paper can be accurately positioned, and the recording paper can be securely adhered to the drum (see FIG. This corresponds to the problem of the conventional technique 2 . Also, other objects, an image recording apparatus becomes compact, also the flow of the recording paper, for example, development processing of the next step to provide a smooth image recording apparatus (as to the problem of the conventional art 3), in particular, short time to start feeding of the next recording sheet from peeling of the recording sheet when a small recording paper, to provide an image recording apparatus for improved processing capability of the apparatus (as to the problem of the prior art 4 ), And providing a low-cost image recording apparatus with a member used in combination with positioning and peeling (for the problem of the prior art 5) .
[0013]
[Means for Solving the Problems]
The object of the present invention is achieved by the following means. That is, the image recording apparatus according to claim 1 is an image recording apparatus in which recording paper is wound around an outer peripheral surface of a drum to write an image, drum means for winding the recording paper for recording an image around the outer peripheral surface, and the recording paper Positioning means for positioning the leading edge of the recording medium on the outer peripheral surface of the drum means, and when positioning the recording paper on the drum means, the positioning means abuts on the drum means, and after the positioning is completed, the positioning means is separated from the drum means. and positioning the movable unit, it is characterized in that it comprises a.
[0014]
The image recording apparatus according to claim 2 is an image recording apparatus in which recording paper is wound around an outer peripheral surface of a drum to write an image, drum means for winding the recording paper for recording an image around the outer peripheral surface, and a leading end of the recording paper. A positioning means for positioning the drum means; a positioning movable means for abutting the positioning means against the drum means when positioning the leading edge of the recording paper on the drum means, and separating the positioning means from the drum means after completion of positioning; And a squeeze roller means for bringing the recording paper provided in the vicinity of a position parallel to the drum axis of the drum means into contact with the drum means through a contact point between the positioning portion of the positioning means and the outer peripheral surface of the drum means. It is characterized by this. According to a third aspect of the present invention, in the image recording apparatus according to the first or second aspect, the drum means is provided with an annular concave groove in a part of an outer peripheral surface, and the positioning means is the concave groove. And the leading end of the recording paper is positioned on the drum means. Furthermore, the image recording apparatus according to claim 4 is the image recording apparatus according to claim 1 or 2, wherein a shape of a portion where the positioning means is close to the drum means is substantially the same as a curvature of the adjacent drum. It is characterized by this.
[0015]
The above and other objects are achieved by the following means.
( 1 ) In an image recording apparatus for writing an image by winding a recording paper around the outer peripheral surface of a drum, the recording paper for recording an image is wound around the outer peripheral surface, and the horizontal axis is the X axis and the vertical is the Y axis with the rotation center axis as the origin A drum means, a writing means in which a light source for image writing is arranged on the X axis on the first quadrant side of the coordinates constituted by the X axis and the Y axis, and the Y axis and the X axis in the first quadrant. Positioning means for positioning the leading edge of the recording paper on the outer peripheral surface of the drum means provided in the included range, and recording paper on the outer peripheral surface of the drum means provided in the range including the Y axis and the X axis in the third quadrant An image recording apparatus comprising: a peeling means for peeling.
[0016]
( 2 ) In an image recording apparatus for writing an image by winding a recording paper around the outer peripheral surface of the drum, drum means for winding the recording paper for recording an image on the outer peripheral surface, and at one end of the recording paper in the forward rotation direction of the drum means An image recording apparatus comprising: drive means for supplying and driving the drum means to discharge at the other end of the recording paper in the reverse rotation direction of the drum means.
[0017]
( 3 ) In an image recording apparatus for writing an image by winding recording paper around the outer peripheral surface of the drum, drum means for winding the recording paper for recording an image on the outer peripheral surface, and positioning the leading end of the recording paper to the drum means And a positioning / peeling means for simultaneously peeling the trailing edge of the recording paper from the drum means.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG. 2 is a main configuration diagram of an embodiment of the present invention. 2A is a front view of the main part, and FIG. 2B is a side view of the main part. 1 and 2, the cartridge 12 is a cartridge in which the recording paper P is stored. In this embodiment, the recording paper P is a color photographic paper. The cutter 11 cuts the recording paper P into a predetermined length. The drum means is configured to wind the recording paper P around the outer peripheral surface. In FIG. 1, the horizontal axis is the X axis and the vertical is the Y axis with the rotation center axis of the drum 21 as the origin. The recording paper P is vacuum-adsorbed on the drum 21 by a method not shown. The drum driving unit 40 rotates the drum 21 at a high writing speed at the time of image writing, and the rotation of the motor 41 is transmitted to the gear train 42 to rotate the drum 21.
[0019]
The positioning means 91 positions the leading end of the recording paper P. The positioning movable means 92 approaches the outer peripheral surface of the drum 21 and is separated from the outer peripheral surface of the drum 21 after the positioning of the recording paper P is completed. The positioning means 91 is provided in a range including the X axis and the Y axis in the first quadrant. Specifically, when positioning the recording paper P, the positioning means 91 enters the concave groove 21C of the drum 21 by the positioning movable means 92 and positions the leading end of the recording paper P. After the positioning, the positioning means 91 is separated from the concave groove 21C of the drum 21 by the positioning movable means 92. A squeeze roller 31 that is a squeeze roller means is adapted to bring the recording paper P into close contact with the drum 21 while rotating while being pressed against the drum 21 by the force of a spring 63.
[0020]
The squeeze roller displacement unit 60 is configured to press and separate the squeeze roller 31 from the drum 21. In the press contact, the cam 62 is rotated by the rotation of the motor 61 and is separated from the lever 53, and the lever 53 is moved by the force of the spring 63 to press the squeeze roller 31 to the drum 21. In the same manner as the press contact, the cam 62 is rotated by the rotation of the motor 61, the lever 53 is moved against the spring 63, and the squeeze roller 31 is separated from the drum 21. The driving means 50 rotates the drum 21 by the squeeze roller 31. When the motor 51 rotates, the pulley 55 provided on the lever 53 is rotated via the gear train 52 to drive the belt 56. Further, the pulley 54 is further rotated to rotate the squeeze roller 31 integrated with the pulley 54. When the recording paper P is supplied to the drum 21 and discharged, the drum 21 is rotated at a low speed by the rotation of the squeeze roller 31.
[0021]
The writing means 80 is designed to write an image by irradiating the light of the three colors of lasers 81 and 82 with a half mirror 85 and bending the optical path of the laser 83 with a mirror 84 and irradiating the recording paper. The writing means has a light source arranged on the X axis on the first quadrant side.
[0022]
The peeling means 70 peels off the recording paper P that is in close contact with the outer peripheral surface of the drum 21. At the time of peeling, the peeling claw 71 comes into contact with the drum 21 by the movable portion 72, and the leading edge of the recording paper P More peel. When not peeling, the peeling claw 71 is separated from the drum 21 by the movable portion 72. The peeling means is provided in a range including the X axis and the Y axis in the third quadrant. The roller 14 discharges the recording paper P with a discharge roller.
[0023]
Here, the image writing operation will be described.
[0024]
1) Recording paper supply operation: The recording paper P is pulled out from the cartridge 12 by the roller 13. At the same time, the positioning means 91 is placed in the concave groove 21 </ b> C of the drum 21. The leading end of the recording paper P is abutted against the positioning claw 91 to regulate the position of the leading end of the recording paper P. The recording paper P is brought into close contact with the drum 21 by the squeeze roller 31. Here, the positioning claw 91 is separated from the concave groove 21 </ b> C of the drum 21. While rotating the squeeze roller 31 and rotating the drum 21 in the clockwise direction in FIG. 1 at a low speed, the recording paper P is sucked and fixed to the drum by a vacuum suction means (not shown). When the recording paper P is fed a predetermined length, it is cut by the cutter 11. Here, the squeeze roller 31 is separated from the drum 21.
[0025]
2) Image writing operation: The drum 21 is rotated at high speed, and the laser beam moves back and forth on the paper surface of FIG. 1 to write an image signal on the recording paper P on the drum 21.
[0026]
3) Recording paper discharge operation: The separation claw 71 is moved closer to the drum 21 side. The recording paper P is peeled off from the drum 21 by rotating the squeeze roller 31. The recording paper P is discharged by the roller 14. The color photographic paper that is the recording paper P is developed.
[0027]
(Embodiment 2)
FIG. 3 is an overall configuration diagram of the embodiment of the present invention, and FIG. 4 is a main configuration diagram of the embodiment of the present invention. 4A is a front view of the main part, and FIG. 4B is a side view of the main part. 3 and 4, the cartridge 12 is a cartridge in which the recording paper P is accommodated, and the recording paper P is color printing paper in this embodiment. The cutter 11 cuts the recording paper P into a predetermined length. The drum 21 as drum means is configured to wind the recording paper P around the outer peripheral surface. Incidentally, the recording paper P is vacuum-adsorbed on the drum 21 by a method not shown. The drum driving unit 40 is configured to rotate the drum 21 at the writing speed at the time of image writing, and the rotation of the motor 41 is transmitted to the gear train 42 to rotate the drum 21.
[0028]
The positioning / peeling claw 93, which is a positioning / peeling means, is configured so that the recording paper can be positioned and separated by the same member. The positioning / separating movable means 94 is close to the outer peripheral surface of the drum 21, positions the leading end of the recording paper P, and is separated from the outer peripheral surface of the drum 21 after the positioning is completed. The rear end of the recording paper P is peeled off and separated from the outer peripheral surface of the drum 21 after the peeling is completed. Specifically, when positioning the recording paper P, the positioning / peeling claw 93 enters the concave groove 21C of the drum 21 by the positioning / peeling movable means 94, positions the leading end of the recording paper P, and after the positioning is finished, the positioning / peeling claw 93 is separated from the concave groove 21 </ b> C of the drum 21 by the positioning / peeling movable means 94. Further, when the recording paper P is peeled off, the positioning / peeling claw 93 enters the concave groove 21C of the drum 21 by the positioning / peeling movable means 94 and peels the rear end portion of the recording paper P. 93 is separated from the concave groove 21 </ b> C of the drum 21 by the positioning / peeling movable means 94.
[0029]
The squeeze roller 31 that is a squeeze roller means is adapted to bring the recording paper P into close contact with the drum 21 while rotating while being pressed against the drum by the force of the spring 63. The squeeze roller displacement part 60 presses and separates the squeeze roller 31 from the drum 21. In the pressure contact, the cam 62 is rotated by the rotation of the motor 61 and is separated from the lever 53, and the lever 53 is moved by the force of the spring 63 to press the squeeze roller 31 against the drum 21. The cam 62 is rotated by the rotation of the motor 61, the lever 53 is moved against the spring 63, and the squeeze roller 31 is separated into the drum 21.
[0030]
The driving means 50 rotates the drum 21 forward and backward from the squeeze roller 31. When the motor 51 rotates, the pulley 55 provided on the lever 53 is rotated via the gear train 52, and the belt 56 is moved. The squeeze roller 31 integrated with the pulley 54 is rotated by driving and further rotating the pulley 54. When the recording paper is supplied, the drum 21 is rotated forward at a low speed by the rotation of the squeeze roller 31. Further, when the recording paper is discharged, the drum 21 is reversely rotated at a low speed by the rotation of the squeeze roller 31.
[0031]
The writing means 80 is configured to write the image by irradiating the recording paper with the light beams of the three colors 81 and 82 bent by the half mirror 85 and the light beam of the laser 83 being also bent by the mirror 84 and irradiating the recording paper. .
[0032]
Here, the image writing operation will be described.
[0033]
1) Recording paper supply operation: The recording paper P is pulled out from the cartridge 12 by the roller 13. At the same time, the positioning peeling claw 93 is brought close to the drum 21.
[0034]
The leading end of the recording paper P is abutted against the positioning peeling claw 93 to regulate the position of the leading end of the recording paper P. The recording paper P is brought into close contact with the drum 21 by the squeeze roller 31. Here, the positioning peeling claw 93 is separated from the drum 21. The recording paper P is sucked and fixed to the drum 21 by a vacuum suction means (not shown) while rotating the squeeze roller 31 and rotating the drum 21 clockwise in FIG. 3 at a low speed. When the recording paper P is fed a predetermined length, it is cut by the cutter 11. Here, the squeeze roller 31 is separated from the drum 21.
[0035]
2) Image writing operation; the drum 21 is rotated at high speed. The laser beam moves back and forth in the drawing of FIG. 3 to write an image signal on the recording paper P on the drum.
[0036]
3) Recording paper discharge operation: The positioning / peeling claw 93 is brought close to the concave groove 21 </ b> C of the drum 21. The drum 21 is reversely rotated by the squeeze roller 31 to peel off the recording paper P from the drum. The recording paper P is discharged by the roller 14. Note that the color photographic paper as the recording paper is developed.
[0037]
In the embodiment, the color laser writing device has been described as the image recording device. However, a monochrome (black and white) laser writing device may be used, and image writing may be performed on plain paper by an inkjet method.
[0038]
【The invention's effect】
Since it comprised as mentioned above, there exist the following effects. According to the first aspect, the drum means for winding the recording paper for recording the image on the outer peripheral surface, the positioning means for positioning the leading edge of the recording paper on the drum means, and the leading edge of the recording paper are positioned on the drum means. The positioning means is in contact with the drum means, and after the positioning is completed, the positioning means is separated from the drum means. Can be accurately positioned, no special processing is required on the drum side, and the drum is not easily unbalanced at high speed.
[0039]
According to a second aspect of the present invention, drum means for winding a recording paper for recording an image around the outer peripheral surface, positioning means for positioning the leading edge of the recording paper to the drum means, and positioning the leading edge of the recording paper to the drum means The positioning means abuts on the drum means, and after the positioning is completed, the positioning movable means for separating the positioning means from the drum means, the contact between the positioning means and the drum means, and the recording at a position parallel to the drum axis. Squeeze roller means for bringing the paper into close contact with the drum means, and the recording paper is brought into close contact with the drum by the squeeze roller means at the position where the recording paper is positioned. The leading end can be accurately positioned, and the recording paper can be securely attached to the drum.
According to a third aspect of the present invention, when the drum means is provided with an annular concave groove in a part of the outer peripheral surface, and the leading end of the recording paper is positioned on the drum means, the positioning means abuts on the concave groove. The leading edge of the recording paper surely hits the positioning part.
Further, according to the fourth aspect, the shape of the adjacent portion of the drum means of the positioning means is substantially the same as the curvature of the adjacent drum, so that the shape of the peeling portion of the positioning means is easy to peel off, and the proximity of the drum The strength of the portion is sufficient, and the shape is easy to process.
[0040]
According to (1) , in an image recording apparatus that winds a recording paper around the outer peripheral surface of a drum and writes an image, the recording paper for recording an image is wound around the outer peripheral surface, and the horizontal axis is the origin and the horizontal axis is the X axis. Drum means having a vertical Y axis, writing means in which a light source for image writing is arranged on the X axis on the first quadrant side of the coordinates constituted by the X axis and the Y axis, and on the Y axis in the first quadrant, Positioning means for positioning the leading edge of the recording paper on the outer peripheral surface of the drum means provided in the range including the X axis, and on the outer peripheral surface of the drum means provided in the range including the Y axis and the X axis in the third quadrant The image recording apparatus is reduced in size, and the flow of the recording paper in the next process, such as development processing, becomes smooth.
[0041]
According to (2) , the drum means for winding the recording paper for recording the image on the outer peripheral surface, and the drum for supplying the recording paper in the forward rotation direction of the drum means and discharging the recording paper in the reverse rotation direction of the drum means. In particular, when the recording paper is small, the time from the separation of the recording paper to the start of feeding the next recording paper is short, and the processing capability of the apparatus is improved.
[0042]
According to (3) , the drum means for winding the recording paper for recording the image on the outer peripheral surface, the positioning peeling that uses both the positioning of the leading edge of the recording paper to the drum means and the separation of the recording paper from the drum means. Since the device is provided, the member is used in combination with positioning and peeling, and the cost is reduced.
[0045]
Since the shape of the portion where the positioning / peeling means is close to the drum means is substantially the same as the curvature of the adjacent drum, the shape of the peeling portion of the positioning means is easy to peel off, and the strength of the drum proximity portion is sufficient, In addition, the shape is easy to process.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of an embodiment of the present invention.
FIG. 2 is a main part configuration diagram of an embodiment of the present invention.
FIG. 3 is an overall configuration diagram of an embodiment of the present invention.
FIG. 4 is a main part configuration diagram of an embodiment of the present invention.
[Explanation of symbols]
21 drum (drum means)
21C Concave groove 31 Squeeze roller (squeeze roller means)
40 Drum Drive Unit 41 Motor 50 Drive Unit 51 Motor 53 Lever 60 Squeeze Roller Displacement Unit 61 Motor 70 Peeling Unit 71 Peeling Claw 72 Movable Unit 80 Writing Unit 81 Laser 91 Positioning Unit (Positioning Claw)
92 Positioning movable means 93 Positioning peeling means (positioning peeling claw)
94 Positioning / peeling movable means P Recording paper

Claims (4)

In an image recording apparatus for writing an image by winding a recording paper around the outer peripheral surface of a drum, drum means for winding the recording paper for recording an image on the outer peripheral surface, and positioning for positioning the leading end of the recording paper on the outer peripheral surface of the drum means And a positioning movable means for abutting the positioning means against the drum means when positioning the recording paper on the drum means and separating the positioning means from the drum means after completion of positioning. Image recording device. In an image recording apparatus for writing an image by winding a recording paper around the outer peripheral surface of a drum, drum means for winding a recording paper for recording an image on the outer peripheral surface, positioning means for positioning the leading end of the recording paper on the drum means, When positioning the leading edge of the recording paper on the drum means, the positioning means abuts on the drum means, and after the positioning is completed, the positioning movable means for separating the positioning means from the drum means, the positioning portion of the positioning means, and the drum means An image recording apparatus comprising: squeeze roller means for closely contacting the recording paper provided in the vicinity of a position parallel to the drum axis of the drum means through a contact point with an outer peripheral surface. 3. The drum means according to claim 1 or 2, wherein an annular groove is provided in a part of an outer peripheral surface, and the positioning means is placed in the groove to position the leading end of the recording paper on the drum means. The image recording apparatus described . The image recording apparatus according to claim 1, wherein a shape of a portion of the positioning unit adjacent to the drum unit is substantially the same as a curvature of the adjacent drum .

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