JPH10123723A - Roller cleaning device for photosensitive material processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller cleaning device by which a roller arranged inside a washing storage tank can be drawn out in its axial direction without drawing out the washing storage tank. SOLUTION: In the case of performing the maintenance of a processing equipment, a pair of side boards 162 and 163 are drawn out in the axial direction of a pair of squeezing rollers 74 and 75 with the pair of the rollers 74 and 75, etc. At this time, a driving lever 169 slidably moves on the upper surface of a cam 165 and passes through the inclining surface of the cam 165 as the cam 165 moves, then is detached from the cam 165 and moves to a position where the lever 169 abuts on an abutting member not shown in the figure. As the lever 169 moves, a pair of supporting levers 166 and 167 connected to the lever 169 through a rotary shaft 168 moves, thus, the washing storage tank 161 hung and supported to the pair of the levers 166 and 167 falls to a retreating position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive material processing apparatus for processing a photosensitive material with a processing liquid, and more particularly to a roller cleaning apparatus for the same.

[0002]

2. Description of the Related Art Photosensitive materials such as films, photographic papers, printing plates and the like are processed with a processing solution such as a developing solution, a fixing solution, a stabilizing solution, and washing water after an image is recorded. As a photosensitive material processing apparatus for performing such processing, a photosensitive material is transported into a processing tank storing a processing liquid by a transporting unit including a plurality of transport roller pairs or the like, and the photosensitive material is immersed in the processing liquid. Immersion type processing equipment that performs processing by
2. Description of the Related Art There is known a coating type processing apparatus in which an amount of processing liquid necessary for processing a photosensitive material is applied to a photosensitive surface of the photosensitive material to perform processing instead of immersing the photosensitive material in the processing liquid.

In such a photosensitive material processing apparatus,
The processing liquid supplied to the photosensitive material is removed by a pair of squeezing rollers that rotate while sandwiching the photosensitive material. In order to prevent the processing liquid remaining on the surfaces of the pair of squeezing rollers from being crystallized or generating stains due to the tired processing liquid, the lower squeezing roller of the pair of squeezing rollers is A part thereof is immersed in the cleaning liquid stored in the cleaning liquid storage tank. With the rotation of the pair of squeezing rollers, the cleaning liquid stored in the cleaning liquid storage tank is also supplied to the upper squeezing roller of the pair of squeezing rollers via the lower squeezing roller. Are cleaned.

[0004]

In the above-described photosensitive material processing apparatus, each time a predetermined amount of photosensitive material is processed, a plurality of transport roller pairs including a pair of squeezing rollers are pulled out along with the side plate in the axial direction of the photosensitive material. Etc. are being maintained. At this time, since the lower squeezing roller of the pair of squeezing rollers is disposed in the cleaning liquid storage tank, it is necessary to pull out the cleaning liquid storage tank together with the squeezing roller in order to pull out the squeezing roller. When the cleaning liquid storage tank in which the cleaning liquid is stored is drawn out, the level of the cleaning liquid stored in the cleaning liquid storage tank may be disturbed and overflow, thereby contaminating the apparatus. In order to prevent this, it is necessary to perform a complicated operation of previously discarding the cleaning liquid stored in the cleaning liquid storage tank before pulling out the squeezing roller and the cleaning liquid tank.

SUMMARY OF THE INVENTION An object of the present invention is to provide a photosensitive material processing apparatus capable of pulling out a roller disposed in a cleaning liquid storage tank in its axial direction without drawing out a cleaning liquid storage tank. An object of the present invention is to provide a roller cleaning device.

[0006]

According to a first aspect of the present invention, there is provided a roller rotatably supported between a pair of side plates, which is rotatable with the side plates in the axial direction thereof, and disposed below the roller. By storing the cleaning liquid therein, a cleaning liquid storage tank for immersing a part of the roller in the cleaning liquid, a pair of support rods supporting both ends of the cleaning liquid storage tank, and a shaft supported by the apparatus body, A rotating shaft connected to the pair of supporting rods to move the pair of supporting rods in synchronization with each other, and by rotating the rotating shaft, the cleaning liquid storage tank is partially rotated by the cleaning liquid. The cleaning liquid storage tank is moved between a cleaning position immersed therein and a retracted position retracted below the cleaning position.

According to a second aspect of the present invention, in the first aspect of the present invention, a cam that moves in the axial direction of the roller in synchronization with the pulling out of the roller is provided on the side plate, and the cam is attached to the rotating shaft. The cleaning liquid storage tank is provided by fixing a driving rod in contact with the upper surface of the cam and detaching the driving rod from the upper surface of the cam with the movement of the cam when the roller is pulled out in the axial direction. Is moved from the washing position to the retracted position.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram of a lithographic printing plate making apparatus provided with a photosensitive material processing apparatus to which the present invention is applied.

This plate making apparatus uses a lithographic printing plate M using a silver complex salt diffusion transfer method (DTR method) as a photosensitive material.
The lithographic printing plate M is subjected to image exposure and development processing. The exposure apparatus 2 performs exposure to the lithographic printing plate M, and performs the development processing to the exposed lithographic printing plate M. And a development processing device 3.

A lithographic printing plate using a silver complex salt diffusion transfer method (DTR method), particularly a lithographic printing plate having a physical development nucleus layer on a silver halide emulsion layer is disclosed in, for example, US Pat. No. 3,728. No. 4,114,769, No.4,160,670, No.4,336,321, No.4,501,811, No.4,510,228, No.4,621,041 The exposed silver halide is subjected to chemical development by DTR development to become black silver to form a hydrophilic non-image area, while the unexposed silver halide crystal is The silver salt complexing agent in the developer forms a silver complex and diffuses to the physical development nucleus layer on the surface. Form.

First, the configuration of the exposure apparatus 2 will be described. The exposure device 2 exposes the image of the original to the lithographic printing plate M by projecting the reflected light from the original mounted on the original holder 12 onto the surface of the lithographic printing plate M by the projection optical system 13. is there.

The document holder 12 has a light-transmitting plate 14 on which a document is placed, and an upper lid 15 that can be opened and closed with respect to the light-transmitting plate 14. 1, it is configured to be reciprocally movable in the left-right direction between a position indicated by a solid line and a position indicated by a two-dot chain line. Further, the projection optical system 13 is fixed below the reciprocating movement path of the original holder 12, and a rod-shaped light source 17 for irradiating illumination light to the surface of the original horizontally moved while being held by the original holder 12; The apparatus includes a plurality of folding mirrors 18 for guiding light reflected from a document by the light source 17 and a projection lens 19 for projecting the reflected light guided by the plurality of folding mirrors 18 onto a lithographic printing plate M.

When exposing an image of a document on the lithographic printing plate M by the exposure device 2, the document holder 12 is arranged at a position shown by a solid line in FIG. The original is mounted on the original holder 12 by closing the upper cover 15 after placing the original. Then, with the light source 17 turned on, the document holder 12 is moved to the left in FIG. In synchronization with this, the leading end of the lithographic printing plate M wound in a roll by the plurality of transport rollers 22 and the guide member 23 is moved to the original holder 1.
2 is conveyed at the same speed as the moving speed. As a result, the document held in the document holder 12 is sequentially irradiated with light from the light source 17. Then, the reflected light from the original is irradiated onto the surface of the lithographic printing plate M moving at the same speed as the original holder 12 via the plurality of folding mirrors 18 and the projection lens 19, and the image of the original is printed on the lithographic printing plate M. Exposed.

The lithographic printing plate M on which the image has been exposed is sequentially conveyed from the exposing device 2 to the subsequent developing device 3 for processing. Further, a cutting device 25 having a cutter 24 that moves in a direction perpendicular to the transport direction of the lithographic printing plate M is disposed on the exit side of the exposure device 2. Cut at the rear end of the exposed part.

Since the transport speed of the lithographic printing plate M in the exposure device 2 is lower than the transport speed of the lithographic printing plate M in the developing device 3, the lithographic printing plate M is simply transferred to the exposure device 2 and the developing device 3. Cannot be conveyed. When the lithographic printing plate M is cut by the cutting device 25, it is necessary to stop the transport of the lithographic printing plate M. For this reason, a lithographic printing plate M buffer unit 26 is provided between the exposure device 2 and the development processing device 3, and when the lithographic printing plate M that has been exposed in the exposure device 2 is transported, the buffer unit 26 By stopping the rotation of the pair of rollers 27 and 28 disposed for a certain period of time, the lithographic printing plate M is stored in the buffer unit 26 for a certain length, and then conveyed to the developing device 3. ing.

Next, the configuration of the developing apparatus 3 according to the present invention will be described. FIG. 2 is an enlarged schematic view showing the developing device 3 in FIG. 1, and FIG. 3 is an outline diagram showing a piping system thereof.

The developing unit 3 applies a developing solution (activator) to the exposed lithographic printing plate M and performs a developing process, and a developing solution (stabilizer) to the developed lithographic printing plate M. Stabilizer 33 for applying and stabilizing
And a drying unit 34 for drying the lithographic printing plate M after the stabilization process.

The developing section 32 includes a roller 2 of the buffer section 26.
Lithographic printing plate M conveyed to developing section 32 by 7, 28
A pair of introduction rollers 41 and 42 for nipping and transporting the developer, and a developer application for measuring and applying a fixed amount of the developer to the photosensitive surface of the lithographic printing plate M transported by the pair of introduction rollers 41 and 42 A mechanism 43 and a pair of squeezing rollers 4 for removing the developer supplied to the developing process from the lithographic printing plate M;
4, 45, and a plurality of guide members 46, 47, 48, 49, 50 for guiding the lithographic printing plate M.

The lower roller 41 of the pair of introduction rollers 41, 42 is a heat roller having a built-in heater for heating the lithographic printing plate M passing therethrough. The lithographic printing plate M is heated in advance prior to the development process because a small amount of a temperature-controlled developer is applied to the lithographic printing plate M and the lithographic printing plate M is heated by the heat capacity of the lithographic printing plate M when developing. This is to prevent the temperature of the developer that has come into contact with the developer from decreasing.

As shown in FIG. 3, the developing solution application mechanism 43 is connected to a developing solution tank 52 for storing a developing solution via a pump 53. A collection tray 54 is provided below the developer application mechanism 43. The developing solution in a developing solution tank 52 is pumped by a pump 53 to a developing solution application mechanism 43.
And supplied onto the lithographic printing plate M. Then, the developer not applied to the lithographic printing plate M, such as the developing solution flowing out from both ends and the rear end of the lithographic printing plate M, is collected on a collecting tray 5.
4. Drop on top. Further, since this developer can be reused, the collection tube 5 provided at the lower end of the collection tray 54 is provided.
5, the liquid is dropped into the liquid receiving portion 56 of the developer tank 52 and collected in the developer tank 52. The developer tank 52 has a built-in panel heater 57 and is configured to maintain the developer circulating in the developer circulation path from the developer tank 52 to the developer application mechanism 43 at a predetermined temperature. ing.

A collection tray 58 is provided below the pair of squeezing rollers 44 and 45. The fatigue developer removed from the lithographic printing plate M by the pair of squeezing rollers 44 and 45 cannot be reused.
Recovery hole 6 of liquid receiving member 62 provided below 4, 45
3 and is dropped onto the collection tray 58. Then, the developer is discharged to a drain tank 64 via a collection pipe 59 provided at a lower end of the collection tray 58.

As shown in FIG. 4, the developing solution applying mechanism 43 has a developing solution supply pipe 122 having a plurality of discharge holes 121 formed thereunder, and a plurality of developing solution supply pipes 122 for flowing the developing solution to a lower end thereof. Developer receiving portion 124 having opening 123
A coating roller 125 having a plurality of grooves on its surface and rotating in contact with the lithographic printing plate M; and a diffusion for guiding the developer flowing down from the opening 123 of the developer receiving portion 124 to the coating roller 125. The film 126 and the developer receiving section 12
4 has a backflow prevention film 127 for preventing backflow of the developer flowing down from the opening 123, and a backup roller 128 abutting on the application roller 125. In addition,
Arrows in FIG. 4 indicate the transport direction of the lithographic printing plate M.

The developing solution supply pipe 122 is connected to the developing solution tank 52 via the pump 53, and the developing solution is discharged from the plurality of discharge holes 121 by driving the pump 53. After the developer is once received by the developer receiving section 124, the diffusion film 12
Flow down to 6. Opening 12 of developer receiving section 124
The developer flowing down from 3 is temporarily stored in the contact portion between the application roller 125 and the diffusion film 126 and is diffused in a direction orthogonal to the transport direction of the lithographic printing plate M. Then, with the rotation of the application roller 125, the developer passes through the opening formed by the groove of the application roller 125 and passes through the application roller 125.
Move in the direction of the contact portion between
A reservoir is formed there.

When the lithographic printing plate M passes through the liquid reservoir, a developing solution is applied to the photosensitive surface of the lithographic printing plate M. At this time, since the photosensitive surface of the lithographic printing plate M is pressed against the surface of the application roller 125 by the backup roller 128, the developer applied to the photosensitive surface of the lithographic printing plate M is opened by the groove of the application roller 125. It is weighed to a certain amount by the part. Therefore, the backup roller 128
Printing plate M that has passed the contact portion between
A constant amount of developer required for development is always applied to the photosensitive surface.

The stabilizing section 33 is provided with a stabilizing liquid applying mechanism 73 for measuring and applying a constant amount of a stabilizing liquid to the photosensitive surface of the lithographic printing plate M conveyed from the developing section 32, and a stabilizing process. The lithographic printing plate M includes a pair of squeezing rollers 74 and 75 for removing the stabilizing liquid from the lithographic printing plate M, and a plurality of guide members 76, 77 and 78 for guiding the lithographic printing plate M.

As shown in FIG. 3, the stabilizing solution application mechanism 73 is connected to a stabilizing solution tank 82 for storing a stabilizing solution via a pump 83. A collection tray 84 is provided below the stable liquid application mechanism 73. The stable liquid in the stable liquid tank 82 is supplied to the stable liquid applying mechanism 73 by the pump 83.
And supplied onto the lithographic printing plate M. Then, the stabilizing liquid not applied to the lithographic printing plate M, such as the stabilizing liquid flowing out from both ends and the rear end of the lithographic printing plate M, is dropped on the collection tray 84 because it can be reused. Further, the stable liquid drops into the liquid receiving section 86 of the stable liquid tank 82 via the recovery pipe 85 provided at the lower end of the recovery tray 84, and is collected in the stable liquid tank 82.

Below the pair of squeezing rollers 74 and 75, a cleaning liquid storage tank 161 storing the cleaning liquid is provided.
The lower part of the pair of squeezing rollers 74, 75 is immersed in the cleaning liquid stored in the cleaning liquid storage tank 161. The squeezing rollers 74 and 75 contaminated by the stabilizing solution that has been subjected to the stabilizing process of the lithographic printing plate M and are fatigued are washed with the washing solution. The configuration of the cleaning liquid storage tank 161 and the like will be described later in detail.

As shown in FIG. 5, the stabilizing liquid application mechanism 73 includes a stabilizing liquid supply pipe 132 having a plurality of discharge holes 131 formed below the stabilizing liquid supply pipe 132, and a plurality of stabilizing liquid supply pipes at the lower end thereof. A stable liquid receiving portion 134 having an opening 133 formed therein.
A coating roller 135 whose surface is formed of a single-cell sponge and rotates in contact with the lithographic printing plate M; and an opening 133 of the stable liquid receiving portion 134 whose surface is formed in an uneven shape.
Film 136 for guiding the stable liquid flowing down from the coating roller 135 to the coating roller 135 and the lithographic printing plate M with the coating roller 1
And a leaf spring 138 that urges the plate spring 335. In addition,
Arrows in FIG. 4 indicate the transport direction of the lithographic printing plate M.

The stable liquid supply pipe 132 is connected to the aforementioned stable liquid tank 82 via a pump 83, and the stable liquid is discharged from the plurality of discharge holes 131 by driving the pump 83. After the stable liquid is once received by the stable liquid receiving section 134, the diffusion film 13 passes through the plurality of openings 133.
Flow down to 6. Opening 13 of stable liquid receiving portion 134
The stable liquid flowing down from 3 is temporarily stored in a contact portion between the application roller 135 and the diffusion film 136, and is diffused in a direction orthogonal to the transport direction of the lithographic printing plate M. Then, with the rotation of the application roller 135, the stable liquid passes through the opening formed by the unevenness on the surface of the diffusion film 136, moves toward the contact portion between the application roller 135 and the leaf spring 138, and stores the liquid therein. Form.

When the lithographic printing plate M passes through the liquid reservoir, a stabilizing solution is applied to the photosensitive surface of the lithographic printing plate M. At this time, since the photosensitive surface of the lithographic printing plate M is pressed against the surface of the application roller 135 by the leaf spring 138, the stable liquid applied to the photosensitive surface of the lithographic printing plate M is a single bubble on the surface of the application roller 135. It is metered to a fixed volume by a number of holes made by a sponge. Therefore, a constant amount of the stabilizing liquid required for stabilization is always applied to the photosensitive surface of the lithographic printing plate M that has passed through the contact portion between the leaf spring 138 and the application roller 135.

The leaf spring 138 has an overflow hole 137 for storing an excessive amount of a stable liquid in a contact portion between the leaf spring 138 and the application roller 135 to prevent the liquid reservoir from becoming excessively large. Is provided.

The drying unit 34 includes a rubber roller 102 that supports and transports the lithographic printing plate M transported from the stabilizing unit 33,
A mirror roller 103 for preventing uneven drying of the lithographic printing plate M by abutting the rubber roller 102 with a predetermined pressure, and a drying mechanism having a fan 105 and a heater 106 for blowing hot air onto the lithographic printing plate M for drying. 107
And a plurality of transport rollers 1 for transporting the lithographic printing plate M
08, 109, and 110.

The developing process of the lithographic printing plate M by the developing device 3 is performed as follows.

That is, the lithographic printing plate M on which an image has been recorded by the exposure device 2 at the preceding stage is placed on a pair of introduction rollers 41 and 4.
The developing solution is applied by the developer application mechanism 43 to apply an amount of the developing solution necessary for developing the lithographic printing plate M.
The lithographic printing plate M to which only the developing solution necessary for the developing process is applied is supplied from the developing solution applying mechanism 43 to the pair of squeezing rollers 4.
The developing process is completed on the photosensitive surface while being transported through the space developing section reaching to 4, 45. And the lithographic printing plate M
The developing solution adhered to the developing process and removed by the pair of squeezing rollers 44 and 45 is removed. Subsequently, the lithographic printing plate M is applied with a stabilizing solution application mechanism 73 with an amount of stabilizing solution necessary for stabilizing the lithographic printing plate M. The lithographic printing plate M to which only the necessary amount of the stabilizing liquid for the stabilizing process is applied is stabilized while being conveyed to the pair of squeezing rollers 74 and 75, and the stabilizing process attached to the lithographic printing plate M is performed. Is removed by the pair of squeezing rollers 74 and 75. Then, the lithographic printing plate M for which the stabilization process has been completed.
After the unevenness of drying is prevented by being pressed by the mirror surface roller 103, the drying is performed by the drying mechanism 107 and discharged onto the discharge tray 29 shown in FIG.

In the developing apparatus 3, since only the amount of developing solution necessary for the developing process is applied to the lithographic printing plate M and the developing process is performed, the amount of the developing solution required for the process can be reduced. It becomes possible. Further, since a substantially unused processing liquid is supplied to the lithographic printing plate M, the lithographic printing plate M can always be uniformly processed.

Next, the cleaning liquid storage tank 161 and the support structure thereof, which are characteristic parts of the present invention, will be described. FIG.
8 and FIG. 8 are perspective views showing a support structure of the cleaning liquid storage tank 161, and FIGS. 7 and 9 are front views showing the main parts. 6 and 7 show a state where the cleaning liquid storage tank 161 is at the cleaning position, and FIGS. 8 and 9 show a state where the cleaning liquid storage tank 161 is at the retracted position.

In these figures, 162 and 163 are:
A pair of squeezing rollers 74 and 75 are
A pair of side plates that are supported rotatably together with 128, 44, 45, 135 and the like. The pair of side plates 162, 1
63 is a pair of guide rollers 164 (only one is shown in FIGS. 6 and 8),
Is configured to be able to be pulled out in the axial direction. An L-shaped cam 165 is attached to one side plate 162.

The cleaning liquid storage tank 161 for storing the cleaning liquid includes:
Both ends are supported by a pair of support rods 166 and 167, and the pair of support rods 166 and 167 are fixed to a rotating shaft 168 supported by the main body of the developing device 3. A drive rod 169 is attached to one end of the rotation shaft 168.
Has been fixed. Therefore, when the rotating shaft 168 is rotated by moving the driving rod 169, the pair of supporting rods 166 and 167 move in accordance with the movement of the driving rod 169, so that the pair of supporting rods 166 and 167 The supported cleaning liquid storage tank 161 moves up and down.

As shown in FIG. 7, the distance L1 between the tip of the cam 165 and the inner surface of the driving rod 169 is determined by the distance between the end surface of the roller body opposite to the cam 165 of the squeezing roller 74 and the cleaning liquid storage tank 161. It is smaller than the distance L2 to the inner surface.

In such a configuration, when the development processing of the planographic printing plate M is performed, as shown in FIG.
69 is mounted on the cam 165 and the cleaning liquid storage tank 1
Reference numeral 61 is disposed at the cleaning position. This cleaning position is a position where a part of the squeezing roller 74 is immersed in the cleaning liquid stored in the cleaning liquid storage tank 161. In this state,
With the rotation of the pair of squeezing rollers 74, 75, the cleaning liquid is supplied to the surfaces of these rollers 74, 75,
Dirt is prevented from being generated on the pair of squeezing rollers 74 and 75 by the stabilizing solution that has been subjected to the stabilization process and has become fatigued.

When maintenance of the developing device 3 is performed after the lithographic printing plate M has been processed by a predetermined amount, the pair of side plates 16
2, 163 together with a pair of squeezing rollers 74, 75 and other rollers 125, 128, 44, 45, 135, etc.
The pair of drawing rollers 74 and 75 are pulled out in the axial direction (the direction of the arrow shown in FIG. 6). At this time, as the cam 165 attached to the side plate 162 moves, the driving rod 169 moves
After passing over the inclined surface 165a of the cam 165, as shown in FIGS. 8 and 9, it is moved away from the cam 165 to a position where it comes into contact with a contact member (not shown).

Along with the movement of the driving rod 169, a pair of supporting rods 166 and 167 connected to the driving rod 169 via the rotating shaft 168 also move.
The cleaning liquid storage tank 161 supported by 66 and 167 is shown in FIG.
And as shown in FIG. 9, it descends to a retreat position. The retracted position is a position where the upper end of the cleaning liquid storage tank 161 is disposed below the lower end of the squeeze roller 74.

Further, a pair of side plates 162 and 163 are further provided.
, The pair of squeezing rollers 74, 75 and the other rollers 125, 128, 44, 45, 135, etc. are moved to positions suitable for maintenance thereof. At this time, since the upper end of the cleaning liquid storage tank 161 has moved below the lower end of the squeezing roller 74, the cleaning liquid storage tank 161 and the squeezing roller 74 do not interfere with each other.

When the maintenance of the pair of squeezing rollers 74 and 75 and the other rollers 125, 128, 44, 45 and 135 is completed, the pair of side plates 162 and 163 are replaced with the pair of squeezing rollers 74 and 75 and the other rollers. 125, 12
8, 44, 45, 135, etc.
4 and 75 in the axial direction (the direction of the arrow shown in FIG. 8). At this time, with the movement of the cam 165 attached to the side plate 162, the driving rod 169 moves the inclined surface 165a of the cam 165.
Move to the upper surface of the cam 165 via.

With the movement of the driving rod 169, the pair of supporting rods 166 and 167 connected to the driving rod 169 via the rotating shaft 168 also move.
The cleaning liquid storage tank 161 supported by 66 and 167 rises again to the cleaning position shown in FIGS.

In the above-described embodiment, a cleaning liquid storage tank 161 is provided below a pair of squeezing rollers 74 and 75 for squeezing out the stabilizing liquid subjected to the stabilizing process. Although the case of cleaning the cleaning liquid 75 has been described, a similar cleaning liquid storage tank is disposed below a pair of squeezing rollers 44 and 45 for squeezing the developing solution supplied to the developing process, and these rollers 44 and 45 are disposed. May also be washed.

In the above-described embodiment, the driving rod 169 and the supporting rods 166 and 167 are connected to each other via the rotating shaft 168, and the driving rod 1 is actuated by the action of the cam 165.
The case where the supporting rods 166 and 167 are also moved by moving the 69 to thereby move the cleaning liquid storage tank 161 up and down has been described, but a configuration in which drive is directly applied to the supporting rods 166 and 167 or the rotating shaft 168 is described. It may be.

Further, in the above-described embodiment,
A lithographic printing plate M using a silver complex salt diffusion transfer method (DTR method) as a photosensitive material, and a developing processing device 3 for applying only a developing solution necessary for development to the lithographic printing plate M and performing a developing process. Although the present invention has been described with reference to the case where the present invention is applied, the present invention can also be applied to other various kinds of photosensitive material processing apparatuses.

[0049]

According to the first aspect of the present invention, since the cleaning liquid storage tank can be moved between the cleaning position and the retracted position by rotating the rotating shaft, the roller and the cleaning liquid storage tank can be moved. Can be prevented, and only the roller can be pulled out in the axial direction. This eliminates the need for a complicated operation of previously discarding the cleaning liquid stored in the cleaning liquid storage tank during maintenance as in the related art.

According to the second aspect of the present invention, when the cam is attached to the side plate and the driving rod which is in contact with the upper surface of the cam is fixed to the rotating shaft, and the roller is pulled out in the axial direction, the movement of the cam is required. The cleaning rod is moved from the cleaning position to the retracted position by detaching the drive rod from the upper surface of the cam in accordance with, so that the cleaning liquid storage tank is automatically moved by pulling out the roller together with the side plate. Can be moved to the evacuation position.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a lithographic printing plate making apparatus.

FIG. 2 is a schematic diagram of a developing device 3;

FIG. 3 is a schematic diagram showing a piping system of the developing device 3;

FIG. 4 is a schematic view showing a developer application mechanism 43.

FIG. 5 is a schematic view showing a stable liquid application mechanism 73.

FIG. 6 is a perspective view showing a support structure of a cleaning liquid storage tank 161.

FIG. 7 is a front view showing a main part of a support structure of a cleaning liquid storage tank 161.

FIG. 8 is a perspective view showing a support structure of a cleaning liquid storage tank 161.

FIG. 9 is a front view showing a main part of a support structure of a cleaning liquid storage tank 161.

[Explanation of symbols]

 Reference Signs List 2 Exposure device 3 Development processing device 32 Developing unit 33 Stabilizing unit 34 Drying unit 43 Developing solution applying mechanism 73 Stabilizing solution applying mechanism 74 Squeeze roller 75 Squeeze roller 161 Washing liquid storage tank 162 Side plate 163 Side plate 164 Guide member 165 Cam 166 Support rod 167 Support Rod 168 Rotating shaft 169 Drive rod M Planographic printing plate

Claims (2)

[Claims] 1. A roller rotatably supported between a pair of side plates and capable of being pulled out along with the side plates in an axial direction thereof; and a roller disposed below the roller and storing a cleaning liquid therein, thereby forming the roller. A cleaning liquid storage tank for partially immersing the cleaning liquid in the cleaning liquid, a pair of support rods supporting both ends of the cleaning liquid storage tank, and a pair of support rods that are pivotally supported by an apparatus body and connected to the pair of support rods. A rotating shaft for synchronously moving a supporting rod; and rotating the rotating shaft to rotate the cleaning liquid storage tank so that the cleaning position where a part of the roller is immersed in the cleaning liquid and the cleaning liquid storage tank are A roller cleaning device for a photosensitive material processing apparatus, wherein the roller cleaning device is moved between a retreat position retracted below a cleaning position. 2. A cam that moves in the axial direction of the roller in synchronization with pulling out of the roller is attached to the side plate, and a driving rod that is in contact with an upper surface of the cam is fixed to the rotating shaft. Is drawn in the direction of its axis,
2. The photosensitive material processing apparatus according to claim 1, wherein the cleaning rod is moved from the cleaning position to the retracted position by moving the driving rod away from the upper surface of the cam as the cam moves. 3. Roller cleaning device.