JP2003076032A - Device for conveying and guiding printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the easiness for carrying out a printing plate by relieving adhesion force for positioning and attraction due to static electricity when the printing plate is carried out from a surface plate. SOLUTION: When a photopolymer plate 102 brought into contact with a surface plate 110 is carried out to a subsequent step, rollers 260 are protruded from the surface plate 110 so as to relieve adhesion force (insufficient relief of negative pressure by a vacuum pump 256, attraction due to static electricity or the like) generated between the surface plate 110 and the photopolymer plate 102, and the photopolymer plate 102 is supported on the rollers 260. Thereby, since the photopolymer plate 102 is floated with respect to the surface plate 110, a conveyance resistance due to the above adhesion force and attraction can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for receiving a printing plate that is carried in, positioning it at a predetermined position, maintaining the flatness of the printing plate, and carrying out the printing plate after a predetermined processing. The present invention relates to a transport guide device that includes a surface plate arranged as a relay point and guides the loading and unloading of a printing plate on the surface plate.

[0002]

2. Description of the Related Art A photosensitive layer (for example, a photopolymerizable layer) on a support
A technique has been developed in which a printing plate such as a photopolymer plate provided with is used to record an image directly on a photosensitive layer (photopolymerization layer) of the printing plate by a laser beam or the like (printing plate automatic exposure device). With such a technique, it is possible to quickly record an image on a printing plate.

In a printing plate automatic exposure apparatus which uses a technique of recording an image on a printing plate, a magazine containing a large number of printing plates stacked therein is loaded, and the printing plates are printed one by one from this magazine. It has been proposed that it can be taken out and sent to the exposure unit.

That is, the printing plate taken out is positioned on the apparatus at a predetermined position with respect to the apparatus and is sent onto a surface plate which can be conveyed in the positioned state.

In the surface plate, for example, air is sucked from a suction hole provided on the surface of the surface plate to position and hold the placed printing plate.

The platen is capable of reciprocating from a position for receiving a printing plate (first position) to an exposure unit (second position). Therefore, the printing plate positioned on the surface plate is transported to the exposure unit at a predetermined transport speed while maintaining its flatness. This carrying direction coincides with the sub-scanning direction in the exposure unit, and the light beam emitted based on a predetermined image signal from the exposure head provided in the exposure unit during the sub-scanning carrying out main scanning. , An image can be exposed on the surface of the printing plate.

The printing plate that has been exposed in the exposure section is sent to the next step when the platen returns to the first position.

As described above, the platen has a function as a so-called relay point for supporting the printing plate carried in from the magazine and carrying it out to the next step after exposure in the exposure section or the exposure section.

By the way, when the printing plate is positioned and held on the platen, negative pressure is formed by sucking the air staying in the grooves on the streaks provided on the platen from the back surface side of the platen. The printing plate is attracted to the surface plate by pressure. This ensures that the printing plate is held.

[0010]

However, if the printing plate is held in close contact with the suction, even if the suction that triggered the close contact is released, the printing plate may have a resistance when being carried out. In addition, static electricity may be generated between the printing plate and the surface plate by sliding at the time of loading or sliding for positioning, and electric charges may be accumulated to generate electrostatic force.

[0011] Due to the resistance force due to such close contact holding and suction holding, a conveyance failure occurs at the time of carrying out from the surface plate.

In consideration of the above facts, the present invention can improve the carry-out property of the printing plate by reducing the adhesion force for positioning and the attraction force due to static electricity when the printing plate is carried out from the surface plate. An object of the present invention is to obtain a printing plate conveyance guide device.

[0013]

According to a first aspect of the present invention, a printing plate that is carried in is received and positioned at a predetermined position, and the flatness of the printing plate is maintained. A transport guide device that includes a platen arranged as a relay point for carrying out a printing plate, and guides the loading and unloading of the printing plate on the platen, and carries out the printing plate from the platen. And a friction supporting member for supporting the printing plate in a floating state with respect to the surface of the printing plate, and a friction coefficient of the supporting portion supporting the printing plate to be substantially zero when the printing plate is floated by the floating supporting device. And a coefficient reducing means.

According to the first aspect of the invention, the adhesion can be removed by forcibly floating the printing plate from the surface of the surface plate. Further, the attraction force due to static electricity cannot be completely removed only by floating, and it remains as a resistance force at the time of carrying out. Therefore, after the printing plate is floated on the surface plate, the coefficient of friction with the supporting portion is almost zero.
By doing so, relative movement becomes easy, and the attraction force due to static electricity can be almost ignored.

According to a second aspect of the invention, in the invention according to the first aspect, the levitation supporting means is disposed at an appropriate position on the printing plate mounting surface of the surface plate, and the printing mounting surface is provided. The friction coefficient reducing means is a rotatable roller roller provided at the tip of the protrusion.

According to the second aspect of the present invention, the printing plate is fixed to the platen by providing the projecting portion so that it can be projected and retracted with respect to the printing plate supporting surface of the platen, and by providing the roller roller at the tip of the projecting portion. Floating from above and reduction of friction coefficient can be achieved at the same time.

According to a third aspect of the present invention, in the invention according to the first aspect, the floating supporting means and the friction coefficient reducing means are provided at appropriate positions on the printing plate mounting surface of the surface plate. It is composed of a hole and an air ejecting means for ejecting air of a predetermined pressure from the small hole. The air ejecting means operates when the printing plate is carried out from the platen, and ejects from the small hole. It is characterized in that the printing plate is floated from the surface plate by the pressure of the air to be applied, and the coefficient of friction is almost zero.

According to the third aspect of the invention, a plurality of small holes are provided on the printing plate supporting surface of the platen, and air is discharged at a predetermined pressure. As a result, the printing plate on the surface plate can be floated from the surface plate by the air discharged from the plurality of small holes, and theoretically can be brought into a non-contact state with the surface plate, so that the friction coefficient is almost zero. be able to.

According to a fourth aspect of the present invention, in the invention according to the first aspect, the floating supporting means includes a supporting surface positioned higher than a printing plate supporting surface of the platen. It is a guide portion arranged in the printing plate unloading direction from the board, and the friction coefficient reducing means is a rotatable roller roller provided on at least one side in the vicinity of the boundary between the surface plate and the guide portion. It is characterized by that.

According to the fourth aspect of the invention, when the printing plate is carried out, the guide portion is provided on the downstream side of the surface plate. The printing plate support surface of the guide portion is located higher than the printing plate support surface of the surface plate. Further, since a rotatable roller roller is provided on at least one side near the boundary between the surface plate and the guide portion, the printing plate is gradually transferred to the surface plate when passing from the surface plate to the guide portion. Since it floats on the other hand and is carried out while being supported by the roller, it can be carried out with the friction coefficient being substantially zero.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an automatic exposure apparatus 100 for photopolymer plates according to this embodiment.

The automatic exposure apparatus 100 includes a plate accommodating portion 104 for accommodating the photopolymer plate 102 (see FIG. 2) mounted on the carriage 200, and a sheet-fed portion 106 for taking out the photopolymer plate 102 accommodated in the plate accommodating portion 104. A platen 110 for positioning and holding the photopolymer plate 102, and a plate feeding unit 108 for sending the photopolymer plate 102 taken out by the sheet-feeding unit 106 as the sheet-fed device of the present invention to the platen 110.
And the photopolymer plate 10 positioned on the surface plate 110
2 and an exposure unit 112 that records an image.

An automatic developing device 116 can be set on the downstream side of the automatic exposure device 100 via a buffer section 114, and plate supply, exposure, and development can all be automatically processed. There is.

As shown in FIG. 2, the plate accommodating portion 104 is capable of accommodating a carriage 200 on which a plurality of photopolymer plates 102 are leaned.

The plate accommodating portion 104 has a floor portion 104A formed at a position higher than the road surface, and the dolly 200 is constructed so that it can be climbed onto the floor portion 104A from the road surface. That is, the caster 120 is supported on the road surface via the caster 120, and the caster 120 is movable to the projecting position (imaginary line position in FIG. 2) and the housing position (solid line position in FIG. 2) with respect to the carriage 200. Has become.

The casters 120 move to the storage position so as to be folded up in response to the storage operation in the plate storage section 104, and at the same time, the auxiliary roller 122 corresponds to the floor section 104A. It has a structure in which it is supported to 104A via this auxiliary roller 122.

The carriage 200 is provided with a stacking unit 206, and a magazine 208 is leaned against the stacking unit 206 at a predetermined angle and loaded. In the magazine 208, a large number (for example, several tens) of the photopolymer plates 102 are preliminarily stacked and housed, and the cart 200 is mounted on the plate housing unit 10.
By loading No. 4, the photopolymer plate 102 is loaded in the plate accommodating unit 104.

Each of the photopolymer plates 102 has one
The surface (the surface on the photosensitive layer side formed by the photopolymerization layer) of each sheet is covered and protected by a slip sheet (not shown). As a result, the photopolymer plate 102 and the interleaving paper 118 are alternately stacked in the magazine 208. As shown in FIGS. 1 and 2, the magazine 208 is provided with a shutter 210, and by closing the shutter 210 in a place other than a dark room, unnecessary exposure of the photopolymer plate 102 is prevented. To prevent.

The photopolymer plate 102 is opposed to the sheet portion 106 in a state of being inclined at a predetermined angle by loading the carriage 200 into the plate accommodating portion 104. In addition, the shutter 210 of the magazine 208 uses the carriage 200 for the plate housing unit 1.
The photopolymer plate 102 can be taken out from the magazine 208 by loading it on the plate 04 and opening the plate containing portion 104 in a light-shielded state.

The single-wafer portion 106 provided above the plate accommodating portion 104 is provided with a suction cup 124.
4 is used to suck the interleaving paper 118 and the photopolymer plate 102 at predetermined positions on the upper ends thereof, and the interleaving paper 118 and the photopolymer plate 102 are sequentially taken out from the magazine 208.
Send to 08.

The plate supply section 108 is roughly divided into a common conveyance section 128 for receiving and conveying the photopolymer plate 102 or the interleaf sheet 118 from the sheet section 106, and a common conveyance section 128 for receiving the photopolymer plate 102 and delivering it to the surface plate 110. For transporting the photopolymer plate, the interleaf paper transport unit 134 for receiving the interleaf paper 118 and sending it to the interleaf paper storage box 132 provided in the carriage 200, and the photopolymer plate transport unit 130 from the common transport unit 128. Alternatively, the slip sheet transport unit 134
And a switching conveyance unit 136 that guides the conveyance unit to any of the above by a switching operation.

That is, since the photopolymer plate 102 and the interleaving paper 118 are alternately laminated in the plate feeding unit 108, the switching / conveying unit 1 is adsorbed every time the sheet unit 106 adsorbs.
36 is switched, and the structure is such that each is conveyed in a predetermined direction.

As shown in FIG. 2, the common transport section 128 is used.
, The roller 128A is separated from the roller 128B (shown by a broken line in FIG. 2), and when the sheet 106 removes the photopolymer plate 102 or the interleaf sheet 118, the roller 128A moves toward the roller 128B. (Indicated by a solid line in FIG. 2), the leading end of the taken-out photopolymer plate 102 or the interleaving paper 118 is nipped and sent to the switching / transporting unit 136. The switching / transporting unit 136 moves from the magazine 208 to the slip sheet 11
8 is taken out, the interleaving paper 116 is passed through the interleaving paper transport unit 13
The transport path is switched so as to transport toward 4 (indicated by a broken line in FIG. 2).

The carriage 200 is provided with an interleaf paper storage box 132, and the interleaf paper 118 taken out from the magazine 208 by the sheet feeding unit 106 is interleaved paper storage box provided in the carriage 200 by the interleaf paper transport unit 134. You will be guided to 132.

On the other hand, when the photopolymer plate 102 is taken out from the magazine 208, the transfer path is switched so that the switching transfer unit 136 guides the photopolymer plate 102 to the photopolymer plate transfer unit 130 (shown by the solid line in FIG. 2).
As a result, the photopolymer plate 102 taken out from the magazine 208 is sent out to the surface plate 110 (see FIG. 1) by the photopolymer plate transfer unit 130 in a substantially horizontal transfer state.

As shown in FIG. 1, the height of the upper surface of the surface plate 110 is lower than the horizontal conveying height by the photopolymer plate conveying section 130, and there is a slight interval in the conveying direction. . For this reason, the photopolymer plate 10 delivered from the photopolymer plate transport unit 130.
No. 2 lands on the surface plate 110 with the tip thereof slightly hanging down, and the rear end in the transport direction is located on the front side of the surface plate 110. On this front side, a moving body 152 that can approach and separate from the surface plate 110 is provided.

The moving body 152 is provided with a temporary support plate, a pressing plate, a puncher, etc. (all are not shown), and the photopolymer plate 10 sent to the surface plate 110.
2 is prevented from hanging down by the temporary support plate of these.

A pressing plate (not shown) provided on the moving body 152 presses the rear end portion of the photopolymer plate 102 to eliminate the skew of the photopolymer plate 102 and to set a predetermined conveyance direction reference. Send to the position. The reference position is a state in which the rear end portion of the photopolymer plate 102 in the transport direction slightly protrudes from the surface plate 110.

At this reference position, the photopolymer plate 10
Sensors (not shown) are provided at a plurality of positions including both corners of the rear end portion of the conveyance direction 2 and these sensors detect the rear end portion of the photopolymer plate 102 in the conveyance direction to stop the pressing by the pressing plate. . Further, these sensors are also applied to position detection of the photopolymer plate 102 in the conveyance width direction. That is, by moving the surface plate 110 in the conveyance width direction, the corners of the photopolymer plate 102 are aligned with the sensors, and this is fixed.
It is designed to be registered as the initial position of.

The position of the photopolymer plate 102 moved to the initial position is determined relative to the scanning exposure start position in the exposure unit 112.
In this state, 2 is sucked and held by a negative pressure supplied to a suction groove (not shown) provided on the surface plate 110. Surface plate 110
The photopolymer plate 102 adsorbed and held on the upper side is provided with punch holes by a puncher provided on the moving body 152.

The surface plate 110 is accommodated in the first position (see the solid line position in FIG. 1), which is the initial position for receiving the photopolymer plate 102 from the photopolymer plate conveying unit 130, and the first position accommodated in the exposure unit 112. It is possible to move back and forth between the two positions (see the position of the imaginary line in FIG. 1) at a constant speed (common to the movement in the conveyance width direction for positioning).

The exposure unit 112 is provided with a scanning unit 164 above the transport path of the surface plate 110, and a laser beam whose lighting is controlled according to an image signal is mainly scanned (surface plate 1).
10 is a direction orthogonal to the transport direction). On the other hand, the outward transportation of the surface plate 110 is a sub-scanning movement,
As a result, an image is recorded on the photopolymer plate 102 on the surface plate 110 during the forward transportation to the exposure unit 112, and is returned to the original position by the backward transportation. The suction holding of the photopolymer plate 102 on the surface plate 110 that has returned to the original position is released.

Surface plate 1 on which an image is recorded and which has returned to the initial position
10, the discharging mechanism unit 166, which was on standby at the rear end side of the photopolymer plate 102 in the conveying direction by the photopolymer plate conveying unit 130, passes above the surface plate 110 and passes the front end of the photopolymer plate 102 in the conveying direction. Move to the department.

A hook portion 166A for supporting the rear end portion of the photopolymer plate 102 in the conveying direction is formed in the discharge mechanism portion 166, and the rear end portion of the photopolymer plate 102 protruding from the surface plate 110 is moved by a moving body. The temporary support plate provided at 152 lifts the discharge mechanism 166.
By moving the photopolymer plate 102 in the conveying direction of the photopolymer plate 102,
As the discharging mechanism 166 is hooked on the tray, it is conveyed to the downstream side of the surface plate 110. On this downstream side,
A buffer unit 114 is provided, and the automatic developing device 11 is further provided.
6, the photopolymer plate 102 is smoothly sent out while the buffer 114 absorbs the difference between the discharging speed of the discharging mechanism 166 and the conveying speed of the automatic developing device 116.

FIG. 3 shows a side view of the surface plate.
A plurality of grooves 250 for adsorbing the photopolymer plate 102 are formed on the mounting surface of the photopolymer plate 102 on the surface plate 110.

At least one place of each groove 250 is a surface plate 1
A through hole 252 is formed so as to penetrate the back surface of the device 10.
A vacuum pump 256 is attached to the through hole 252 via a pipe 254 to suck air.

For this reason, the photopolymer plate 102 that has been carried in and placed on the surface plate 110, as indicated by the chain line arrow T in FIG.
By closing the groove 250, the space inside the groove 250 becomes negative pressure, and the photopolymer plate 102 is adsorbed.

The grooves 250 are provided in a streak shape extending in a radial direction from a predetermined point and in parallel with each side of the periphery. For the photopolymer plate 102 of different sizes,
The suction force is almost evenly obtained.

Here, the roller 250, which is rotatable at a uniform pitch, is provided in the groove 250 that linearly extends in the direction of the guide plate 258 (delivery direction) that transfers the photopolymer plate 102 from the loading direction to the subsequent process. Has been done.

As shown in FIG. 4, the roller 260
Has its rotation shaft 262 pivotally supported at the tip of a piston arm 264. The piston arm 264 is a surface plate 110.
Guide hole 266 that penetrates from the bottom surface to the back surface of the groove provided in
Has been inserted into.

The lower end of the piston arm 264 has a shaft 268.
It is rotatably connected to one end of the crank arm 270 via. The crank arm 270 has an eccentric shaft 27 provided at a position displaced from the axis of the disc-shaped cam 272.
It is pivotally supported by 4.

The cam 272 is configured to reciprocally rotate within a range of 45 ° about the rotation shaft 276 of the shaft center by the driving force of the driving means (not shown).

That is, the eccentric shaft 274 can be alternately moved from the solid line position in FIG. 4 to the imaginary line position. With this movement, the inclination angle of the crank arm 270 changes, and the piston arm 264 can be moved in the vertical direction in FIG.

When the piston arm 264 is at the lowermost position, the roller roller 260 is depressed below the surface on which the photopolymer plate 102 of the surface plate 110 is placed, and when it is at the uppermost end position, A part of the roller roller 260 projects onto the mounting surface of the photopolymer plate 102 of the surface plate 110.

That is, when the photopolymer plate 102 is positioned on the surface plate 110, the roller roller 260 is retracted, and the vacuum pump 256 (see FIG. 3) sucks air to bring it into close contact with the surface of the surface plate 110. it can.

On the other hand, when carrying out the photopolymer plate 102, the suction of the vacuum pump 256 is released, and the roller roller 260 is projected onto the surface of the surface plate 110 on which the photopolymer plate 102 is placed. Can be floated above the surface plate 110.

As shown in FIG. 3A, a discharge mechanism 278 is provided on the surface plate 110. The discharging mechanism 278 includes a moving block 280 which moves on the surface plate 110 in the left-right direction of FIG. 3 by a guide (not shown), and a hooking portion 282 attached to the lower surface of the moving block 280 and bent in a substantially U-shape. It consists of and.

Here, when the photopolymer plate 102 is carried out, the moving block 280 has an end portion in the carrying-in direction (surface plate 1).
10 to the left end) (see FIG. 3 (B)). After that, it descends in the direction of the surface plate 110 and slightly moves in the carry-out direction (direction of the right end portion of the surface plate 110). Accordingly, the hook portion 282 can be arranged below the photopolymer plate 102 slightly protruding from the surface plate 110.

In this state, by moving the moving block 280 to the original height position, the end portion of the photopolymer plate 102 can be hooked on the hook portion 282 and lifted.

The moving block 280 is moved in the carry-out direction when returning to the original height position, and the photopolymer plate 102 is carried in the direction of the guide plate 258 accordingly (FIG. 3).
(See (C)). At this time, the photopolymer plate 102 is
Since it is lifted up by the roller rollers 260 and floats above the surface plate 110, there is no frictional force against the surface plate 110, and the attraction force due to static electricity or the like is weakened, so that there is no resistance to conveyance. it can.

The operation of this embodiment will be described below.

In the automatic exposure apparatus 100, image exposure to the photopolymer plate 102 is instructed with the carriage 200 having the magazine 208 containing the photopolymer plate 102 mounted in the plate accommodating section 104. Then, the photopolymer plate 102 is taken out.

At this time, when the interleaf sheet exists in the uppermost layer, the interleaf sheet 11 is transferred from the common transport section 128 to the interleaf sheet transport section 134.
The transport path is switched by the switching transport unit 136 so as to transport 8.

The interleaving paper delivered to the common transport section 128 is
Shared transport unit 128 while being pulled out from the magazine 208
Is sent to the interleaving paper transport unit 134 through the switching transport unit 136 and is stored in the interleaf paper storage box 132.

Photopolymer plate 10 from magazine 208
When the interleaving paper 118 covering 2 is taken out, the photopolymer plate 102 is taken out subsequently. That is, the uppermost layer of the magazine 208 is the photopolymer plate 102, and when the photopolymer plate 102 is taken out, the switching conveyance unit 36 is switched and a conveyance path from the common conveyance unit 128 to the photopolymer plate conveyance unit 130 is formed. To be done.

The photopolymer plate 102 taken out from the magazine 208 is slid down onto the surface plate 110 through a predetermined conveying path, then positioned at a predetermined position, and held on the surface plate 110 in a positioned state.

After that, the surface plate 110 starts to move to the exposure unit 112, and as a result, reciprocates once between the initial position (first position) and the exposure unit 112 (second position). That is, at the initial position after one round trip, the platen 11
The exposure of the photopolymer plate 102 above 0 is completed.

Photopolymer plate 10 after this exposure
Holding of No. 2 is released from the surface plate 110 and sent to the next process. In the next step, the buffer unit 11
4, the developing device 116 is installed so that the photopolymer plate 102 can automatically perform everything from taking out from the magazine 208 to developing processing.

Here, when the photopolymer plate 102 is placed on the surface plate 110, the photopolymer plate 102 is slid down from a slightly higher position as indicated by an arrow T in FIG. The tip is grounded at any position on the right side of the intermediate position of the surface plate 110 in the left-right direction in FIG.
It will slide on the surface plate 110.

By this sliding, static electricity is generated, electric charges are accumulated in the photopolymer plate 102 or the surface plate 110, and a force (attracting force) of attracting each other works. Also, the surface plate 1
Since the groove 250 is brought into close contact with the vacuum pump 256 with a negative pressure after the photopolymer plate 102 is positioned at an appropriate position on 10, the close contact may be maintained even after the suction by the vacuum pump 256 is released.

In such a case, the photopolymer plate 102
Becomes a resistance force when carrying out in the direction of the guide plate 258,
Occasionally a transport jam occurred. Therefore, in the present embodiment, after the exposure processing in the exposure unit 112, the photopolymer plate 102 is placed on the surface plate 110 when the surface plate 110 returns to its original position and when the suction by the vacuum pump 256 is released. I tried to raise it against.

That is, as shown by a chain line arrow T in FIG. 3, the photopolymer plate 102 carried in and placed on the surface plate 110.
By closing the groove 250, the space inside the groove 250 becomes negative pressure, and the photopolymer plate 102 is adsorbed.

At this time, the cam 272 has the eccentric shaft 274.
Is the position indicated by the solid line in FIG. 4, and the piston arm 264 is the lowermost position, so that the roller roller 260
Are depressed below the surface of the surface plate 110 on which the photopolymer plate 102 is placed. As a result, the roller roller 260
Nothing works.

On the other hand, when carrying out the photopolymer plate 102 in the guided direction of 258, the cam 272 rotates by 45 °, and the eccentric shaft 274 is moved to the imaginary line position in FIG. As a result, the piston arm 264 moves upward in FIG.
Part of the surface of the surface of the photopolymer plate 102 of the surface plate 110 is projected.

In this way, the roller roller 260 is mounted on the surface plate 11
The photopolymer plate 102 can be floated above the surface plate 110 by projecting it onto the mounting surface of the photopolymer plate 102 of 0.

Next, the discharging mechanism 278 moves to the end in the loading direction (the left end of the surface plate 110) (see FIG. 3B). After that, it descends in the direction of the surface plate 110 and slightly moves in the carry-out direction (direction of the right end portion of the surface plate 110). Accordingly, the hook portion 282 can be arranged below the photopolymer plate 102 slightly protruding from the surface plate 110.

In this state, by raising the moving block 280 to the original height position, the end portion of the photopolymer plate 102 can be hooked on the hook portion 282 and lifted.

The moving block 280 is moved in the carry-out direction when returned to the original height position, and the photopolymer plate 102 is carried in the direction of the guide plate 258 accordingly (FIG. 3).
(See (C)). At this time, the photopolymer plate 102 is
Since it is lifted up by the roller rollers 260 and floats above the surface plate 110, there is no frictional force against the surface plate 110, and the attraction force due to static electricity or the like is weakened, so that there is no resistance to conveyance. it can.

As described above, in the present embodiment, the adhesion force (vacuum) generated between the surface plate 110 and the photopolymer plate 102 when the photopolymer plate 102 adhered to the surface plate 110 is carried out to the next step. In order to alleviate the negative pressure elimination by the pump 256) and the suction by positive electricity), the roller roller 260 is projected on the surface plate 110 and the photopolymer plate 102 is supported by the roller roller 260. As a result, since the photopolymer plate 102 floats above the surface plate 110, it is possible to reduce the conveyance resistance force due to the above-mentioned adhesion force and suction force.

In the present embodiment, the roller roller 260 is applied as the floating supporting means for floating the photopolymer plate 102 on the surface plate 110, and the roller roller 260 is rotatable as the friction coefficient reducing means. As shown in FIG. 5, the vacuum pump 256 is attached to the groove 250 of the surface plate 110.
A branch pipe 290 is formed in the middle of a pipe 254 that communicates with the pipe 254, a blower 292 (compressor) is arranged at the end of the pipe 254, and the solenoid valve 29 is provided in each of the pipe 254 and the branch pipe 290.
4, 296 may be provided, and the inside of the groove 250 may be made negative pressure / positive pressure.

That is, when the photopolymer plate 102 is adsorbed on the surface plate 110, the electromagnetic valve 294 is opened, the electromagnetic valve 296 is closed, and the vacuum pump 256 is operated. On the other hand, when the photopolymer plate 102 is floated above the surface plate 110, the electromagnetic valve 296 is opened, the electromagnetic valve 294 is closed, and the blower 292 is operated. Thereby, the groove 2
The inside of 50 becomes a positive pressure, and the photopolymer plate 102 is pneumatically pressurized.
Can be supported. Further, since it is supported by air pressure, it is possible to almost eliminate friction on the surface plate 110 during sliding.

Further, in this embodiment, the roller 26
0 are arranged at equal pitches across the surface plate 110 in the left-right direction in FIG. 3, but as shown in FIG.
When 2 is loaded onto the surface plate 110, its tip is located at any position on the right side of the center of the surface plate 110 in the left-right direction in FIG. 6 (see arrow T in FIG. 6). The roller roller 260 may be arranged only on the (downstream side at the time of carrying out). Further, in this case, the roller roller which is always in a protruding state may be arranged only at the position where the photopolymer plate 102 does not rest at the time of contact. Further, the roller roller may be arranged on the guide plate 258.

[0083]

As described above, according to the present invention, when the printing plate is carried out from the surface plate, the adhesion force for positioning and the attraction force due to static electricity are reduced to improve the carry-out property of the printing plate. It has an excellent effect that

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an automatic exposure apparatus applied to this embodiment.

FIG. 2 is a schematic configuration diagram showing a main part of an automatic exposure apparatus provided with a single-wafer part to which the present invention is applied.

FIG. 3 is a side view showing a conveyed state of a photopolymer plate on a surface plate.

FIG. 4 is a side view showing a roller roller elevating mechanism according to the present embodiment.

FIG. 5 is a side view of a surface plate showing a modified example (1) of the levitation support means and the friction coefficient reduction means of the present invention.

FIG. 6 is a side view of a surface plate showing a modified example (2) of the levitation support means and the friction coefficient reduction means of the present invention.

[Explanation of symbols]

Reference Signs List 100 automatic exposure device 102 photopolymer plate (printing plate) 104 plate accommodating portion 106 sheet-fed portion 110 surface plate 112 exposure portion 118 interleaf paper 200 carriage 208 magazine 250 groove 260 roller roller (floating support means, friction coefficient reduction means) 264 piston arm (Floating support means) 270 Crank arm (floating support means) 272 Cam (floating support means) 256 Blower (floating support means, friction coefficient reducing means) 294, 296 Solenoid valve (floating support means)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mamoru Murata             1-324 Uetakecho, Saitama City, Saitama Prefecture             Fuji Photo Optical Co., Ltd. (72) Inventor Kazuyama Kazuko             798 Miyadai, Kaisei-cho, Ashigarakami-gun, Kanagawa Prefecture             Shishi Film Co., Ltd. (72) Inventor Yoshinori Kawamura             798 Miyadai, Kaisei-cho, Ashigarakami-gun, Kanagawa Prefecture             Shishi Film Co., Ltd. F term (reference) 2H084 AA30 AE04 AE08 BB13 CC05                 2H097 DB07 KA29 LA01                 3F101 FA02 FC03 LA01 LB08

Claims (4)

[Claims] 1. A transfer point is provided for receiving a printing plate that has been carried in, positioning it at a predetermined position, maintaining the flatness of the printing plate, and carrying out the printing plate after a predetermined process. A transport guide device that includes a platen and that guides the loading and unloading of the printing plate on the platen, which operates when the printing plate is unloaded from the platen, and the printing plate with respect to the platen surface. Printing comprising: a floating support means for floating and supporting the printing plate; and a friction coefficient reducing means for making a friction coefficient of a support part supporting the printing plate to be substantially 0 when the printing plate is floated by the floating support means. Plate conveyance guide device. 2. The levitation support means is a projection portion which is disposed at an appropriate position on the printing plate mounting surface of the surface plate and can project and retract with respect to the printing mounting surface. 2. The printing plate transport guide device according to claim 1, wherein the roller guide is a rotatable roller roller provided at the tip of the protrusion. 3. The levitation supporting means and the friction coefficient reducing means are small holes provided at appropriate positions on the printing plate mounting surface of the platen, and air discharging means for discharging air of a predetermined pressure from the small holes. The air discharge means is operated when the printing plate is carried out from the surface plate, the printing plate is floated from the surface plate by the pressure of the air discharged from the small holes, and the coefficient of friction is The printing plate transport guide device according to claim 1, wherein 4. The guide unit, wherein the floating support means includes a support surface that is positioned higher than a printing plate support surface of the platen, and is a guide unit that is arranged in a printing plate unloading direction from the platen. 2. The printing plate transport guide device according to claim 1, wherein the friction coefficient reducing means is a rotatable roller roller provided on at least one side in the vicinity of the boundary between the surface plate and the guide portion.