JPS60179730A - Photosensitive material carrying device - Google Patents

Abstract

PURPOSE:To easily and surely perform close contact, holding, and removal of a photosensitive material without scratching and pressing the recording surface of the material, by providing in an electrostatic attracting device which can electrostatically attract the photosensitive material. CONSTITUTION:When a photosensitive material 1 having a prescribed size is supplied from a feeding section 10 or 20, the material 1 is carried forward along a guide plate by means of feed rollers 30. When the front edge of the photosensitive material 1 contacts reference pins 61a, the contact is detected by a sensor 70 and a carrying device 60 starts moving in the direction of the arrow A. Simultaneously, a DC power source 62d is connected with a electrode group 62b and an electrostatic attracting device 62 is set to a condition where it can make its electrically attracting operation. Therefore, as the carrying device 60 moves, the photosensitive material 1 is successively attracted to the upper surface of the electrostatic attracting device 62 from the front edge. In this case, the material 1 is attracted to the device 62 under conditions where the material 1 is completely closely attracted to the device 62, even when both side end parts of the material 1 are somewhat curled.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a photosensitive material suitable for use in an image recording bag device that records an image by conveying the photosensitive material in a direction perpendicular to the beam scanning direction of an exposure device. This is a mouse thing about the carrying device.

[Conventional technology]

Conventionally, there have been devices shown in FIGS. 1 and 2 as photosensitive material supporting devices used in this type of image recording apparatus. In the one shown in the first figure, the photosensitive material 1 is held by upper and lower gripping rollers 3 and 3' so as to be in sliding contact with the front surface of the exposure tube 2a of the exposure device 2, and the gripping roller 3,3'
The photosensitive material 1 was conveyed upward or downward by rotating the rollers, but in this case, the gripping force of the rollers 3, 3' and the pressing force on the tube surface of the exposure tube 2a scratched the tube surface, and the photosensitive material 1
There was a drawback that the image quality was degraded due to the influence of pressure on the image. Also, the one shown in the second figure is the exposure tube 2 of the exposure device 2.
A rotating drum 4 is installed in the vicinity of the rotating drum 4, and the insertion parts 5, 5 are made to face each other on the circumferential surface of the rotating drum 4, and both ends of the photosensitive material l in the moving direction are inserted and fixed. The rotating drum 4 was rotated by a predetermined angle each time the transfer was completed. In this case, the above-mentioned drawbacks could be eliminated, but it was difficult to uniformly bring the entire surface of the photosensitive material into close contact with the rotating drum 4, and in particular, the center of the photosensitive material 1 was lifted off the drum 4, causing the exposure distance This has the disadvantage that a clear image cannot be obtained due to variations in the photosensitive material 1, and the inserted portion of the photosensitive material 1 cannot be exposed, resulting in waste at both ends of the photosensitive material 1 in the direction of movement, resulting in less effective use. There was also a problem with that.

[Purpose of the invention]

In view of the above-mentioned drawbacks, the present invention has been developed to improve the adhesion and retention of photosensitive materials without damaging or pressing the recording surface of the photosensitive material.
It is an object of the present invention to provide a photosensitive material supporting device that allows peeling to be performed easily and reliably.

[Structure of the Invention] This invention provides an electrostatic adsorption device that can electrostatically adsorb a photosensitive material, for example, on the surface of a movable bed member or on the circumferential surface of a rotatable roller member. It is structured so that it can be adsorbed and carried in a detachable manner.

We are making it possible to achieve the above objectives.

[Embodiment]' Next, the present invention will be explained based on an embodiment shown in the drawings from FIG. 3 onwards.

FIG. 3 is a schematic side view of an image recording apparatus using the photosensitive material supporting device according to the present invention.

In the figure, 10.20 is a supply path for the photosensitive material 1, and the photosensitive material 1 is fed out from a cassette (not shown) containing a photosensitive material of a specific size, such as a photosensitive material cut in half or a photosensitive material cut into six pieces. To ensure accurate supply of
Each restricts the width direction of the photosensitive material 1.

30 is a feed roller that sends out the photosensitive material 1 supplied one by one from either one of the supply paths 10 and 20, 40 is a guide plate, and 50 is a pressure roller.

Reference numeral 60 denotes a support device for the photosensitive material 1 sent out by the feed roller 30, and the support device 60 is coated with double-sided adhesive tape, adhesive, etc. on the upper surface of the flat bed 61 as shown in FIGS. 3 and 4. Electrostatic adsorption device 62 fixed by fixing means
It is equipped with As shown in FIG. 5, the electrostatic adsorption device 62 has a surface adsorption layer 62a made of high dielectric plastic.

Electrode group 62 including a positive electrode and a negative electrode made of conductive plastic. b and an insulating layer 62c made of insulating plastic are integrally formed.
0 to 3000 V, preferably about 1000 V) 62 d
When a voltage of 1 is applied to the electrode group 62b, one surface adsorption layer 62
A dielectric polarization phenomenon occurs at a, a charge of the opposite sign to that on the electrode is induced, and an electrostatic force is generated between the photosensitive material 1 and the photosensitive material 1, thereby making it possible to attract and hold the photosensitive material 1. In addition.

Reference numeral 62e denotes a switch connected by the output of a sensor, which will be described later. When writing of image information to the photosensitive material 1 is completed, the switch 62e is switched as shown by the dashed line to short-circuit the positive electrode group and the negative electrode group of the electrode group 62b. Surface adsorption layer 62d
The purpose is to immediately eliminate the residual electric charge and quickly release the adsorption force. In order to release this attraction force more quickly, a voltage opposite to that during attraction and holding may be applied to the electrode group 62b.The magnitude and application time of this reverse voltage are appropriately set.

A reference pin 61a is provided at the front end of the upper surface of the flat bed 61, with which the front edge of the photosensitive material 1 comes into contact, and a through hole 61b is bored near the reference pin 61a. A sensor 70 for detecting that the photosensitive material 1 has come into contact with the reference pin 61a is arranged below the through hole 61b. When the sensor 70 detects that the photosensitive material 1 has come into contact with the reference pin 61a, the switch 62e L is closed as shown by the solid line, connecting the DC power source 62d of the electrostatic adsorption device 62 to the electrode group 62b and flattening it. The bed 61 is moved in the direction of arrow A. The flatbed 61 is provided with a drive mechanism (not shown) that moves the photosensitive material 1 in the direction of arrow B when the entire surface of the photosensitive material 1 is moved to the extent that it is completely adsorbed by the electrostatic adsorption device 62.

80 is a light beam scanning device for recording an image on the photosensitive material 1, and the light beam scanning device 80 starts beam scanning when the supporting device 60 finishes adsorbing the photosensitive material 1 and moves in the direction of arrow B. . That is, image information is written from the rear end side of the photosensitive material 1 supplied to the 9-carrying device 60.

FIG. 6 shows an example of a light beam scanning device 80. In this case, the light beam emitted from the laser tube 81 is transmitted to the beam expanding means 82. Long focus cylindrical lens 83. Short focus cylindrical lens 842 rotating polyhedron 85. The photosensitive material 1 can be scanned in the width direction through the fθ lens 8G2 reflecting mirror 87 and the cylindrical lens 88.

The photosensitive material 1 used here has a back coat layer 73 formed on one side of the support 71 and the opposite side of the photosensitive layer 721, as shown in the schematic cross section of FIG. The photosensitive material 1 is arranged with the photosensitive layer side facing the scanning device 80. In addition, the photosensitive material 1 is sensitive only to the laser beam that is the recording light, and its sensitive wavelength range is taken into consideration so that it is not sensitive to the discharge light generated between the photosensitive material and the surface adsorption layer during adsorption and peeling. That power i prefer 6 also. Conductivity (surface resistivity is preferably 10'3 ΩC or less, l)
If a back coat layer of Q'nc+n or less is provided,
Electric discharge becomes less likely to occur, and the adsorption force also increases.

Next, the operation of the above embodiment will be explained.

When a photosensitive material 1 of a predetermined size is supplied from the supply section 10 or 20, the photosensitive material 1 is sent forward along a guide plate 40 by a feeding roller 30. When the front edge of the photosensitive material 1 comes into contact with the reference pin 61a, this is detected by the sensor 70, and the supporting device 60 starts moving in the direction of arrow A. At the same time, a DC power source 62d is connected to the electrode group 62 in the electrostatic adsorption device 62.
b and becomes capable of electrostatic adsorption. For this reason,
With the movement of the carrier device 60.

The photosensitive material 1 is sequentially attracted to the upper surface of the electrostatic attraction device 62 from the front end side. - At this time, even if the photosensitive material 1 is slightly curled at both ends thereof, it will be adsorbed in a state in which it is completely in close contact with the electrostatic adsorption device 62.

When the photosensitive material 1 is attracted to the rear end, the supporting device 60
stops moving, then moves in the opposite direction to the above (direction of arrow B)
At the same time, the light beam scanning device 80 is activated to perform beam scanning in the width direction of the photosensitive material 1, thereby writing three image information.

When the writing of image information onto the photosensitive material 1 is completed, the movement of the supporting device 60 is stopped, and at the same time, the connection between the power source 62d of the electrostatic adsorption device 62 and the electrode group 62b is released, and the switch 6 is disconnected.
K of 2e is closed, and the positive electrode and negative electrode of the electrode group 62b are short-circuited. Alternatively, a reverse voltage as described above is applied. As a result, the residual charge on the first surface adsorption layer 62d disappears immediately, and the adsorption force is released. In this state, the photosensitive material 1 is easily peeled off by a peeling device (not shown) and sent to the first step.

In the above embodiment, the adhesion force is not released until all image information has been written to the photosensitive material 1, but the electrode at the rear end of the electrostatic adsorption device 62 may be separated from the other electrodes. It is also possible to configure the structure so that the energization of the photosensitive material 1 can be partially controlled, and when the writing on the rear end of the photosensitive material 1 is completed, the suction force of only that part is released, making the peeling work easier. This is possible, and the energization pattern may be configured to vary depending on the size of the photosensitive material 1.

FIG. 8 shows a holding device 60 in which an electrostatic adsorption device 62 is fixed to the circumferential surface of a roller member 63. As shown in FIG. According to this embodiment, the photosensitive material 1 is attracted at the contact surface with the electrostatic attraction device 62, and is moved in a predetermined direction along the inner and outer guide plates 90 by the rotation of the roller member 63, making it unnecessary to install an idle roller. .

Note that the roller member 63 has a groove 63a in which a part of the inner and outer guide plates 9o engages in order to improve the peelability of the photosensitive material 1.
are provided, but are not limited to this.

〔Effect of the invention〕

As described above, since the present invention is characterized by being equipped with an electrostatic adsorption device that can electrostatically adsorb a photosensitive material, there is no need to apply pressing force to the photosensitive material to support it, thereby preventing damage to the photosensitive surface or damage to the photosensitive surface. This not only eliminates the problem of deterioration in image quality, but also eliminates the need to support both ends of the photosensitive material, allowing the entire photosensitive surface to be used effectively.Moreover, the suction surface of the photosensitive material is uniform, making it easier to scan the light beam. There is no variation in exposure distance to the device, and high-quality images can be obtained.

Further, according to the present invention, the strength of the adsorption force can be adjusted arbitrarily by changing the power supply voltage applied to the electrostatic adsorption device, so even if curls occur at both ends of the photosensitive material, the adhesion can be maintained. In addition to being reliable, there is no risk of meandering of the photosensitive material during suction conveyance.

Further, according to the present invention, the generation and disappearance of the adsorption force for adsorbing the photosensitive material can be easily performed by simply controlling the connection between the electrode group and the power supply in the electrostatic adsorption device, and the adhesion, holding, and peeling of the photosensitive material can be easily performed. This is i'a, which has various effects such as being able to perform it extremely easily and reliably.

In addition, as a result of the adsorption and peeling test of the photosensitive material performed by the inventors using the photosensitive material supporting device according to the present invention, no static peeling charge occurred on the photosensitive material, and the photosensitive material was removed due to the electrostatic adsorption force. It was confirmed that there was no effect on the photosensitive material due to the supporting of .

[Brief explanation of the drawing]

1 and 2 are side views of a conventional photosensitive material supporting device, FIGS. 3 to 8 show an embodiment of the present invention, and FIG. 3 is a schematic configuration of an image recording device using this device. 4 is a perspective view of this device, FIG. 5 is a schematic sectional view of the electrostatic adsorption device, FIG. 6 is a perspective view of the light beam scanning device, FIG. 7 is a sectional view of the photosensitive material, and FIG. 8 FIG. 3 is a perspective view showing another embodiment. 1-Photosensitive material 10.20--Supply section 30--Feeding roller 40-Guide plate 60-Supporting device 62~ Electrostatic adsorption device Applicant: Konishiroku Photo Industry Co., Ltd. No. 1
Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] [1] A photosensitive material supporting device comprising an electrostatic adsorption device capable of electrostatic adsorption of a photosensitive material. (2) The photosensitive material supporting device according to claim 1, wherein the photosensitive material has an electrically conductive back coat layer.