JPH0651530A - Photosensitive planographic printing plate processing device - Google Patents

Abstract

PURPOSE:To provide the planographic printing plate processing device which can simplify the sealing operation of a processing tank. CONSTITUTION:A dyeing tank body 90 of the waterless planographic developing device is constructed to an inverted V shape opened in the upper part and a dyeing liquid recovering tank 9 for storing a dyeing liquid is arranged in its central part formed as a deep bottom. The liquid level of the dyeing liquid stored in the dyeing liquid recovering tank 92 is maintained between a charging level and a lower limit level. An overflow pipe 91 is disposed below the opening of the dyeing tank body 90 by penetrating the bottom of the dyeing liquid recovering tank 92 and projecting one end from the liquid level of the dyeing liquid. The other end of this pipe is inserted into a waste liquid thank, not shown in Fig. The bubbles of the dyeing liquid are, therefore, discharged from the overflow pipe 91 to the waste liquid tank when these bubbles grown in the dyeing liquid recovering tank 92 and arrive at the top end of the overflow pipe 91. The bubbles are thus prevented from arriving at the opening of the dyeing tank body 90.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive lithographic printing plate processing apparatus for processing a photosensitive lithographic printing plate with a processing solution such as a developing solution and a dyeing solution, and particularly to a photosensitive lithographic printing plate with the processing solution attached. The present invention relates to a photosensitive lithographic printing plate processing apparatus that processes while rubbing the surface of the plate with a brush or the like.

[0002]

2. Description of the Related Art A lithographic printing plate for producing a printing plate for newspaper printing includes a waterless lithographic printing plate having a silicone rubber layer as an ink repellent layer (hereinafter referred to as "waterless lithographic plate").
About this waterless planographic printing,
And Japanese Patent Publication No. 46-16044.
A waterless planographic printing plate in which a photo-soluble or photo-insoluble photosensitive layer and a silicone rubber layer are laminated on a substrate, and JP-A-48-945.
No. 04, JP-A-50-50102 discloses waterless planographic plates in which a photoadhesive photosensitive layer and a silicone rubber layer are laminated on a substrate. Such a waterless lithographic plate can print tens of thousands of sheets without using dampening water.

In the above waterless planographic printing plate, a photosensitive layer and a silicone rubber layer are laminated on a support such as aluminum, and a protective film is laminated to protect the surface. In this waterless planographic plate, the photosensitive layer is cured according to the amount of exposure and adheres to the support, and in this state, a developer (for example, a developer consisting essentially of water, hereinafter referred to as "developing water") Say)
Is applied, the photosensitive layer in the unexposed portion and the portion having a small exposure amount swell and the silicone rubber layer is peeled off, leaving the photosensitive layer and the silicone rubber layer in the exposed portion. Further, in the developed waterless planographic printing plate, the image portion and the non-image portion have substantially the same color. Therefore, in the waterless planographic developing apparatus, a dyeing solution is applied in order to facilitate the plate inspection work.

In the waterless lithographic developing apparatus for developing and dyeing the waterless lithographic plate as described above, a treatment liquid is applied to the surface of the waterless lithographic plate in order to uniformly and surely perform the developing treatment and the dyeing treatment of the waterless lithographic plate. While applying, it is rubbed with a brush or the like. As a result, in the waterless planographic printing plate, the silicone rubber layer swollen by the developing water is surely removed, and the dyeing solution is uniformly applied to the region where the silicone rubber layer is removed. Further, in the waterless lithographic developing apparatus, the processing liquid applied to the surface of the waterless lithographic plate is collected in the processing tank and used again for the processing of the waterless lithographic plate.

When the surface of a waterless planographic plate coated with a treatment liquid such as a dyeing liquid is rubbed with a brush, the scattered treatment liquid foams. Therefore, in the waterless planographic developing apparatus, for example, to raise the side plate of the processing tank so that bubbles of the processing solution such as a dyeing solution do not grow in the processing tank and overflow from the processing tank to contaminate the inside of the apparatus. Insert a side plate into the opening and fill the gap between the side plate and the opening of the processing tank with a sealing material such as silicone rubber to seal it, or adopt a large processing tank with a high side wall from the beginning. I had to do it.

[0006]

However, the work of reliably filling the sealing material between the opening of the processing tank and the side plate is not easy because it must be performed in a narrow space, and the work of assembling the waterless planographic developing apparatus is not easy. Is complicated.

The present invention has been made in consideration of the above facts, and an object thereof is to provide a photosensitive lithographic printing plate processing apparatus capable of simplifying or omitting the sealing work of the processing tank.

[0008]

In order to achieve the above object, a photosensitive lithographic printing plate processing apparatus according to claim 1 of the present invention comprises:
A photosensitive lithographic printing plate processing apparatus, which processes a photosensitive lithographic printing plate with a processing liquid while transporting it, stores the processing liquid used in the processing in a processing tank, and uses the processing liquid again in the processing, Maintaining means for maintaining the liquid surface level of the treatment liquid stored in the upper limit of the bubbles of the treatment liquid not exceeding the opening of the treatment tank and keeping the treatment liquid temperature means at the bottom of the treatment tank at a predetermined lower limit. And discharging means for discharging bubbles of the processing liquid exceeding a predetermined level between the opening and the upper limit.

The photosensitive lithographic printing plate according to claim 2 of the present invention is the photosensitive lithographic printing plate processing apparatus according to claim 1, wherein the processing tank has a deep bottom and a shallow bottom. There is a shallow bottom at a level between the opening and the opening.

[0010]

In the photosensitive lithographic printing plate processing apparatus of the present invention described above, the processing liquid is maintained and stored in the predetermined level range at the bottom of the processing tank. Further, in the treatment tank, when the treatment liquid foams and the bubbles grow to exceed a certain level, the foamed treatment liquid exceeding a certain level is discharged by the discharge means provided in the treatment tank. ing.

The amount of the treatment liquid stored in the treatment tank is determined in consideration of the foamability of the treatment liquid, and even if the treatment liquid foams,
Ejection means are provided so that a certain level is not exceeded.
This can prevent bubbles of the processing liquid from overflowing the processing tank. That is, the size of the processing tank is set in consideration of the required storage amount of the processing liquid and the foamability, and
When the bubbles of the processing liquid reach a certain level, the bubbles are discharged by the discharging means so that the bubbles of the processing liquid do not reach the upper opening of the processing tank.

In the photosensitive lithographic printing plate processing apparatus according to the present invention, it is preferable that a large amount of bubbles of the processing liquid are not discharged by the discharging means.
The size and depth of the processing tank may be set so as to be determined in consideration of the processing capacity of the apparatus and to suppress the bubbles of the processing liquid from being discharged from the discharging means.

In the photosensitive lithographic printing plate processing apparatus according to the second aspect of the present invention, a part of the processing tank has a deep bottom, and the processing liquid is stored in the deep bottom. Further, it is provided so that the level of the shallow bottom is between the opening of the processing liquid and the discharging means. As a result, even if bubbles of the processing liquid grow, they do not reach the opening of the processing tank.

By thus preventing the bubbles of the processing liquid in the processing tank from reaching the opening of the processing tank, the gap between the opening of the processing tank and the side plate for preventing the scattering of bubbles is sealed. And the work of assembling the photosensitive lithographic printing plate processing apparatus becomes easy.

The maintaining means for maintaining the liquid level of the processing liquid is provided with a tank for measuring the liquid level of the processing liquid in the processing tank or adjacent to the processing tank. If monitored, the liquid level of the processing liquid in the processing tank can be maintained within a predetermined range without being affected by bubbles of the processing liquid. As a result, even if a heater for heating the treatment liquid is provided in the treatment tank, it is possible to provide the heater with the function of preventing the heater from being heated.

[0016]

1 and 2 show a waterless lithographic developing apparatus 10 which is an embodiment of the photosensitive lithographic printing plate processing apparatus according to the present invention. As shown in FIG. 1, a waterless planographic developing apparatus 10
1 is provided with an insertion table 11, and the waterless planographic plate 12 is inserted into the casing 10A in a substantially horizontal state from the insertion table 11 (direction of arrow A shown in FIG. 1). In the waterless lithographic developing apparatus 10, a stocker 11A can be arranged on the outlet side opposite to the insertion stand 11, and the waterless lithographic developing apparatus 10 develops the waterless lithographic plate 12A. Are stocked when discharged from the casing 10A. In addition, in the waterless planographic developing apparatus 10, the insertion table 11
Instead of, attach an auto feeder, etc.
2 may be automatically fed into the casing 10A. Further, a washing and drying device may be provided between the stocker 11A and the waterless planographic developing device 10 so that the developed waterless planographic plate 12 is continuously dried and discharged. Waterless planographic 1
Waterless lithographic plate 1 that has been developed and equipped with 2 automatic transport devices, etc.
2 may be subjected to plate bending and punching treatment continuously.

FIG. 2 shows a schematic structure of the waterless planographic developing apparatus 10. The waterless planographic developing apparatus 10 is composed of a developing section 14 and a dyeing section 16, and after developing the waterless planographic plate 12, a dyeing process for facilitating the plate inspection work is performed. As the dyeing solution used in the dyeing section 16, a dyeing solution containing crystal violet, astrazone red, or the like is used.

The waterless planographic plate 12 developed by the waterless planographic developing apparatus 10 is, for example, a laminate of a primer layer, a photosensitive layer, a silicone rubber layer and a protective film on an aluminum substrate. The waterless lithographic plate 12 in which the photosensitive layer is exposed according to the image is developed by the waterless lithographic developing apparatus 10 with the surface protective film peeled off.

The developing section 14 and the dyeing section 16 are covered by an inner casing 15 and are partitioned by a partition wall 15A. The partition wall 15A has an opening 15B through which the waterless planographic plate 12 is inserted.

The developing tank main body 20 of the developing section 14 has an inverted mountain shape and opens upward, and the central portion of the bottom which is a deep bottom is a developing water recovery tank 22. Developer water recovery tank 22
The developing water is accommodated inside. Further, in the developing section 14, an auxiliary tank 18 is disposed between the insertion side of the waterless planographic plate 12 (on the left side of the paper surface of FIG. 2) and the developing tank body 20. The bottom plate 18A of the auxiliary tank 18 is inclined so that the developing tank main body 20 side becomes lower, and the tip end thereof is bent toward the developing water collecting tank 22, so that the developing water in the auxiliary tank 18 is collected.
It is designed to flow inside. The auxiliary tank 18 is
It may be integrated with the developing tank main body 20.

The developing water stored in the developing water recovery tank 22 is
Organic substances are not contained in the components, and simple water such as tap water can be applied. Further, the hardness of water may be adjusted by mixing an antifoaming agent with water to suppress the generation of bubbles during circulation or by adding a chelating agent. Furthermore, the number of times of cyclic use may be increased by adding a preservative. An ozone generator may be attached to obtain the same effect as that of the preservative.

In the developing section 14, a pair of transport rollers 24, 25, 26, 28 are arranged in order from the insertion side of the waterless planographic plate 12. The pair of transport rollers 24, 25 are provided in the auxiliary tank 18. A pair of conveying rollers 26, 28 is provided on the upper portion of the developing tank main body 20. Conveyor roller pairs 24, 25, 2
The racks 6 and 28 are supported by a rack side plate (not shown), and are rotated by transmitting the driving force of a driving means (not shown) to sandwich and convey the waterless planographic plate 12 in the direction of arrow A in FIG. Further, the waterless planographic plate 12 is coated with developing water on its surface before passing through the conveying roller pair 24 and the conveying roller pair 28.

The backflow prevention roller 27 is in contact with the roller above the transport roller 24 to prevent the backflow of the developing water 18. A guide plate 29 is arranged substantially horizontally between the conveying roller pair 24 and the conveying roller pair 25 and between the conveying roller pair 25 and the conveying roller pair 26, so that the waterless planographic plate 12 is inserted from the insertion side. The pairs 24, 25, and 26 are sent out and conveyed in a substantially horizontal state.

Spray pipes 34 are arranged above the conveying roller pairs 24 and 25 on the downstream side. In these spray pipes 34, discharge ports (not shown) provided at predetermined intervals along the conveyance width direction of the waterless planographic plate 12 are opposed between the upper and lower rollers of the conveying roller pairs 24 and 25, respectively. . These spray pipes 34 are
It is communicated with a developing water supply device described later. As a result, the developing water sent to the spray pipe 34 is sprayed onto the surface of the waterless planographic plate 12 which is sandwiched and conveyed by the conveying roller pairs 24 and 25.

The conveying roller pair 28 is arranged at the rearmost part of the conveying path of the waterless planographic plate 12 in the developing section 14, and serves as a squeeze roller for squeezing the developing water applied to the waterless planographic plate 12 in the developing section 14. have.

A brush roller 30 is arranged between the conveying roller pair 26 and the conveying roller pair 28. The brush roller 30 is for scraping the silicone rubber layer corresponding to the image portion on the plate surface by rubbing the plate surface of the waterless planographic plate 12 to be conveyed. The brush roller 30 is also supported by the side plate (not shown) similarly to the pair of transport rollers 24, 25, 26, 28, and is rotated by transmitting the driving force of the driving means (not shown).

The brush roller 30 is formed by planting a brush material on a plastic or metal roll, and rotates in a direction (counterclockwise direction in FIG. 2) which is in conformity with the conveying direction of the waterless planographic plate 12 (normal). By tumbling), the surface of the waterless planographic plate 12 is rubbed. The rotation number of the brush roller 30 is 100 to 800 rpm (preferably 20 rpm).
It is set to 0 to 600 rpm).

Further, the brush roller 30 is rotated and reciprocally moved in the axial direction (the front and back sides of the paper surface of FIG. 2) to further improve the effect of scraping the silicone rubber layer on the plate surface of the waterless planographic plate 12 (hereinafter This is the "forward swing"
Say). The rotation direction of the brush roller 30
The combination with the rotating direction of the brush roller 100 on the dyeing section 16 side described later can be selected as follows. (Developing unit 14) ----- (Dyeing unit 16) -Forward rotation oscillation -------- Reverse oscillation-Forward oscillation -------- Forward oscillation-Normal Rolling oscillating -------- Normal forward oscillating-Normal oscillating ---------- Reverse (combination of this embodiment) In addition, the brush roller 30 is oscillated in the reverse direction to brush the dyeing unit 16. It may be combined with the rotation or swing of the roller 100.

A roller 32 is arranged below the brush roller 30, and a guide plate 31 is arranged downstream of the roller 32. The waterless planographic plate 12 is conveyed while being sandwiched between the roller 32 and the brush roller 30, and is guided by the guide plate 31.
Is sent out in a substantially horizontal state. At this time, the surface is rubbed by the brush roller 30, and the silicone rubber layer corresponding to the image portion is surely scraped off. The guide plate 31 also has a role of preventing vignetting of the waterless planographic plate 12.

The blade 33 is in contact with the upper roller of the conveying roller pair 26, and even if the silicone rubber layer scraped off by the brush roller 30 is scattered and adheres to the conveying roller pair, it is not carried out to the upstream side. Is being done.

Since the roller 32 is freely rotatable, when the waterless planographic plate 12 is conveyed while the brush roller 30 is stopped, the waterless planographic plate 12 is rotated by the rotation of the roller 32. , And is smoothly inserted between the brush roller 30 and the roller 32. Such an operation is not performed during the actual developing process, but is performed when inspecting the brushing state of the brush roller 30. That is, the waterless planographic plate 12 that is entirely exposed is sandwiched between the brush roller 30 and the roller 32, and the brush roller 30 is rotated in a stopped state to determine whether or not the brush width is appropriate.

In such an inspection, the waterless planographic plate 12
Since the brush roller 30 can be freely inserted and withdrawn while the brush roller 30 is stopped, even if the exposure amount is reduced and the brush roller 30 has a large amount of deviation, the portion left at the time of insertion and withdrawal may peel off. Without, it is possible to obtain an accurate brush width.

Spray pipes 40 and 42 are arranged around the brush roller 30. Spray pipe 40
Is disposed between the brush roller 30 and the conveying roller pair 26, and an ejection port (not shown) is formed toward the brush roller 30. Like the spray pipe 34, the spray pipe 40 is also connected to a developing water supply device, which will be described later, by a pipe branching from the pipe 38. The developing water supplied to the spray pipe 40 by the developing water supply device is jetted and supplied toward the brush roller 30.

The spray pipe 42 is composed of a pair of conveying rollers 28.
A discharge port (not shown) is formed between the upper and lower rollers. The spray pipe 42 is also branched from the conduit 38 and communicates with a developing water supply device described later. When the developing water is sent from the developing water supply device to the spray pipe 42, the developing water is ejected between the upper and lower rollers of the conveying roller pair 28.

A brush cover 39 having a substantially U-shaped cross section is arranged above the brush roller 30. The brush cover 39 has a role of preventing the developing water attached to the brush roller 30 from scattering when the brush roller 30 rotates.

The developing water supply device comprises a circulation pump 44, a filter 46, and a pipe line 48 connecting the circulation pump 44 and the developing water recovery tank 22.

The circulation pump 44 is a variable flow rate pump,
It is connected to the controller 52, and the discharge flow rate thereof is controlled by the controller 52. A pipe 38 is connected to the discharge port side of the circulation pump 44, and one end of a pipe 48 is connected to the suction port side. The other end of the conduit 48 is connected to the bottom of the developer water recovery tank 22 via a valve 55 midway. By the operation of the circulation pump 44, the developing water in the developing water recovery tank 22 is sucked into the circulation pump 44 through the pipe 48, and the spray pipes 34, 4 through the pipe 38.
It is designed to be sent to 0 and 42.

A filter 46 is disposed in the middle of the conduit 48, and removes residues in the developing water passing through the conduit 48 (mainly developing residues consisting of a silicone rubber layer rubbed off from the surface of the waterless planographic plate 12). It is designed to be filtered. The mesh of this filter is 10 μ to 500 μ (preferably 100 μ to 3).
00 μ) is used. This filter 46
Are replaced, for example, every time a predetermined amount of waterless planographic plate 12 is processed. A flow rate sensor (not shown) is provided in the middle of the pipeline 38 to detect the flow rate of the developing water passing through the pipeline 38.
When the flow rate of the developing water passing through the pipe 38 becomes less than or equal to a predetermined flow rate, it is possible to notify the replacement time of the filter 46. A general flow meter can be used as the flow sensor, but a rotary sensor is preferable in order to downsize the device.

In the conduit 48, a conduit 56 opened and closed by the valve 54 is provided between the valve 55 and the developing water recovery tank 22.
Is branched, and by opening this valve 54, it is possible to discharge substantially all of the developing water in the developing water recovery tank 22 to a discharge tank (not shown) or the like.

An overflow pipe 50 is provided in the developing water recovery tank 22. The overflow pipe 50 has one end protruding from the liquid surface of the developing water to a predetermined height and the other end connected to the pipe 56. When the amount of the developing water in the developing water recovery tank 22 reaches a predetermined amount or more and reaches the upper end opening of the overflow pipe 50, the developing water of the outermost layer is discharged by the overflow pipe 50. The height of the overflow pipe 50 from the bottom of the developing water recovery tank 22 corresponds to the maximum liquid level (overflow level) of the developing water stored in the developing water recovery tank 22.

In the developing section 14, one end of a pipe 58 is opened, and the other end of the pipe 58 is connected to a water pipe outside the waterless planographic developing apparatus 10 via a valve 60. By opening the valve 60, the developing water can be supplied to the developing section 14 of the waterless planographic developing apparatus 10. That is, as described above, in the waterless planographic developing apparatus 10 used in this embodiment, tap water is used as the developing water. The pipe 58 for supplying the developing water is connected to the developing unit 14
Is opened in the auxiliary tank 18, and the developing water supplied from the pipe 58 flows into the developing water recovery tank 22 along the bottom plate 18A of the auxiliary tank 18.

A solenoid valve 62 and a flow meter 64 with a regulating valve are arranged in the pipe 58 to which tap water is supplied, and these are connected to the control device 52. Therefore, when the control device 52 opens the solenoid valve 62, tap water is supplied into the waterless lithographic developing device 10, and the control device 52 supplies the adjusting valve-equipped flowmeter 64 to the developing portion 14. In addition to adjusting the flow rate, the control device 52 integrates the supply amount of the developing water. When the integrated value of the supplied amount of the developing water reaches a predetermined value, the filter 46 may be replaced, the developing water may be replaced, or the like.

The pipe 58 for supplying tap water is branched between the solenoid valve 62 and the flow meter 64 with a regulating valve, and the dyeing water tank 12 for supplying water to the dyeing section 16 is provided.
8 is opened. A float valve 66 is provided at the tip of the branched pipe 58A, and tap water flows in when the liquid level of the water in the dye water tank 128 falls below a predetermined level.

A cleaning hose 70 is provided in the pipe 58 via a valve 68 so that the developing section 14 and the dyeing section 16 in the waterless planographic developing apparatus 10 can be washed with tap water.

In this embodiment, tap water was directly drawn into the waterless lithographic developing apparatus 10. However, a tank for storing the developing water is provided in the apparatus, and the water in this tank is pumped up by the water supply pump to develop. It may be supplied to the section 14 and the dyeing section 16.

Waterless planographic developing apparatus 1 applied to this embodiment
0, which is disposed on the inlet side of the developing unit 14, passes through the waterless planographic plate 12, that is, the processed amount (area of the waterless planographic plate 12).
A waterless lithographic detector 86 for detecting is provided and is connected to the control device 52. In this waterless planographic detector 86, a plurality of photoelectric tubes are arranged along the width direction of the waterless planographic plate 12,
By measuring the time taken for the waterless planographic plate 12 to pass through the upper portion of the waterless planographic plate detector 86, the control device 52 can integrate the throughput of the waterless planographic plate 12. The waterless planographic detector 86 may calculate the area of the plate surface by measuring the width dimension and the length of the waterless planographic plate 12 that passes by arranging a plurality along the width direction. It is also possible to input the length in the width direction of each sheet in advance into the apparatus and detect the length of the waterless planographic plate 12 with one photoelectric tube to calculate the area. When the waterless planographic detector 86 detects the insertion of the waterless planographic plate 12, the solenoid valve 62 is opened and the developing water is supplied to the developing section 14.

A heater 88 is provided at the bottom of the developing water recovery tank 22.
Are arranged. The heater 88 is connected to a power source (not shown) to heat the developing water. The temperature of the developing water is set to 15 ° to 60 ° (preferably 25 ° to 50 °) by the heater 88. The developing time in this apparatus is 10 seconds to 3 minutes (preferably 3 seconds).
0 seconds to 2 minutes) and the staining time is 5 seconds to 1 minute.
It is set to minutes (preferably 10 to 30 seconds).

Next, the dyeing section 16 will be described. The dyeing tank main body 90 of the dyeing section 16 is opened upward similarly to the developing tank main body 20, the bottom is formed in an inverted mountain shape, and the dyeing liquid recovery tank 92 is formed in the center of the bottom, and the development water recovery tank 22 is formed. Is located adjacent to. A transport path for the waterless planographic plate 12 is formed above the dyeing tank main body 90. The dyeing tank main body 90 has a wide opening at the top, and a concave portion serving as a dyeing liquid recovery tank 92 is formed in the center. The stain liquid is stored in the stain liquid recovery tank 92. The details of the dyeing liquid recovery tank 92 will be described later.

On the upper part of the dyeing tank main body 90, the waterless planographic plate 1
A pair of conveying rollers 94 and 96 are sequentially arranged from the entrance side to the dyeing tank main body 90 along the conveying direction of 2. The conveying roller pairs 94 and 96 are supported by a rack side plate (not shown), and are rotated by receiving the driving force of a driving means (not shown).
The waterless planographic plate 12 is sandwiched and conveyed. These conveying roller pairs 94 and 96 are formed of a general rubber material so as not to damage the surface of the waterless planographic plate 12 to be conveyed.

Further, the tip of the blade 95 is in contact with the roller above the conveying roller pair 94, and like the blade 33, this blade 95 scrapes off the development dust adhering to the conveying roller pair 94 and conveys it. The smoothness of the surface of the roller pair 94 is maintained. The blade 95 also has a role of preventing backflow.

A conveying roller pair 98 is arranged downstream of the waterless planographic plate 12 in the dyeing tank main body 90 in the conveying direction. The conveyance roller pair 98 is made of NBR rubber (nitrile butadiene rubber), Molton roller, or the like as a roll material, and has an improved wiping-off property for the dyeing solution.

A brush roller 100 is arranged between the conveying roller pair 94 and the conveying roller pair 96. The brush roller 100 is also supported by a side plate (not shown) similarly to the pair of transport rollers 94 and 96, and the driving force of a drive means (not shown) is transmitted to the brush roller 100 in a direction opposite to the rotation direction of the pair of transport rollers 94 and 96 (clockwise in FIG. ) To rotate. The brush roller 100 is formed by implanting a brush material on a roll made of plastic or metal, and is rotated in a direction opposite to the conveying direction of the waterless planographic plate 12 (counterclockwise direction in FIG. 2) so that the waterless planographic plate 12 can be rotated. It rubs against the surface of. The rotation number of the brush roller 100 is 100 to 800 r
It is set to pm (preferably 200 to 600 rpm).

A roller 32 is arranged below the brush roller 100, similarly to the lower part of the brush roller 30, and a guide plate 31 is provided adjacent to the upstream side of the roller 32. Therefore, the waterless planographic plate 12 is inserted between the roller 32 and the brush roller 100 in a substantially horizontal state, and the dyeing solution is applied to the surface by the brush roller 100. At this time, the guide plate 31 also has a role of preventing eclipse from the waterless planographic plate 12.

Around the brush roller 100, spray pipes 104 and 105 are arranged. The supply of the treatment liquid to the brush roller 100 is performed to the spray pipe 104 arranged on the upstream upper side thereof through a rectifying plate 106 extending near the brush roller 100 substantially below the spray pipe 104. Discharge ports (not shown) are provided in the spray pipe 104 toward the straightening plate 106 at predetermined intervals along the axial direction of the brush roller 100.

The spray pipe 104 is connected to a dyeing liquid supply device, which will be described later, through a pipe line 110. As a result, the dyeing liquid is sent to the spray pipe 104, discharged toward the straightening plate 106, guided by the straightening plate 106, and supplied to the brush roller 100. At this time, the dyeing solution spreads while flowing down on the straightening plate 106 and is uniformly supplied onto the brush roller 100. The current plate 106 reduces foaming as much as possible.

A straightening plate 108 extending toward the space between the upper and lower rollers of the conveying roller pair 96 is provided on the spray pipe 105 on the upstream side of the brush roller 100. This spray pipe 105 has a discharge port (not shown).
However, an appropriate number of them are provided along the axial direction so as to face the current plate 108. Spray pipe 105 is spray pipe 1
Like 04, it is connected to a dyeing liquid supply device described later through a pipe line 110, and when the dyeing liquid is supplied from the dyeing liquid supply device, the dyeing liquid is discharged from the spray pipe 105 toward the flow straightening plate 108, and the flow straightening plate 108 is discharged. It is guided by 108 and supplied between the upper and lower rollers of the conveying roller pair 96. At this time, the dyeing liquid spreads while flowing down on the plate of the straightening plate 108, and is supplied to the conveying roller pair 96 in a state where the amount of foaming is as small as possible.
The development dust and the like are washed off from the surface of the transport roller pair 96.

Brush roller 100 and spray pipe 10
A brush cover 107 having a substantially U-shaped cross section is arranged above the portions 4 and 105. The brush cover 107 rotates the brush roller 100 and sprays the pipe 104,
The stain solution 105 is prevented from scattering.

The dyeing liquid supply device includes a circulation pump 114, a filter 116, a circulation pump 114 and a dyeing liquid recovery tank 92.
It is constituted by a pipe line 118 communicating with and. The pipe line 110 communicates with the discharge port side of the circulation pump 114, and one end of the pipe line 118 communicates with the suction port side. Circulation pump 1
14 is connected to the control device 52, and when the circulation pump 114 is operated by the control device 52, the dyeing liquid recovery tank 9
The dyeing solution in 2 is sucked into the circulation pump 114 through the pipe 118, and the spray pipes 104, 1
Sent to 05.

A filter 116 is arranged in the middle of the conduit 118, and the residue in the dyeing solution passing through the conduit 118 (mainly scraped from the surface of the waterless planographic plate 12 brought in from the developing section). The development residue of the silicone rubber layer, etc.) is to be removed.

The dyeing solution replenishing device includes a dyeing solution tank 122 containing the dyeing solution, a dyeing solution supply pump 124 for supplying the dyeing solution into the dyeing solution recovery tank 92, and a dyeing solution supplied to the dyeing solution recovery tank 92. It is composed of a water tank 128 for diluting the liquid and a water supply pump 130.

One end of a pipe 126 is communicated with the dyeing liquid tank 122, and the other end of the pipe 126 is opened to a replenishing cylinder 132 arranged adjacent to the dyeing liquid collecting tank 92. A dyeing liquid supply pump 124 is arranged in the middle of the conduit 126. Further, the replenishing cylinder 132 has one end opened to the inside of the water tank 128 and the other end of the pipe 134 opened. The water supply pump 130 is arranged in the middle of the pipe 134. The dyeing liquid supply pump 124 and the water supply pump 130 are connected to the control device 52. As a result, when the control device 52 operates the dyeing liquid supply pump 124 or the water supply pump 130, the dyeing liquid or water is supplied to the dyeing liquid recovery tank 92 as the dyeing liquid via the replenishment cylinder 132. .

As shown in FIG. 3, the dye solution collecting tank 9 is also provided.
Reference numeral 2 is a recess formed in the center of the dyeing tank main body 90 so that the dyeing solution is stored at the bottom. Further, the dyeing solution applied to the waterless planographic plate 12 conveyed in the dyeing section 16 is accommodated in the dyeing solution recovery tank 92 received by the opening of the dyeing tank body 90. The side plate 15C of the casing 15 is fitted in the opening of the dyeing tank main body 90 so that the dyeing liquid does not jump out of the dyeing tank main body 90 even if the dyeing liquid is scattered.

An overflow pipe 91 penetrates through the bottom of the dyeing liquid recovery tank 92, and the upper end of the overflow pipe 91 reaches the vicinity of the upper portion of the dyeing liquid recovery tank 92 and is opened. The other end of the overflow pipe 91 is
It is opened in the waste liquid tank 72 (shown in FIG. 2). The upper end of the overflow pipe 91 is at the upper limit level of the liquid surface of the dyeing liquid recovery tank 92 (the overflow level shown in FIG. 3).
When the dyeing liquid applied to the waterless planographic plate 12 is foamed by the brush roller 100, and the bubbles of the dyeing liquid are collected in the dyeing liquid collecting tank 92 and grow in the dyeing liquid collecting tank 92, an overflow pipe is formed. Upon passing over the upper end of 91, these bubbles flow into the overflow pipe 91 and are discharged into the waste liquid tank 72. For this reason, the bubbles of the dyeing solution do not exceed the opening of the developing tank body 90.

As shown in FIG. 2, the dye solution collecting tank 92 is provided.
One end of the pipe 144 is opened at the bottom of the. The other end of the pipe 144 communicates with the bottom of the liquid level measuring tank 142, and the liquid level of the liquid level measuring tank 142 and the liquid level of the dye-free dyeing liquid in the dyeing liquid recovery tank 92 are different from each other. They are almost the same.

As shown in FIG. 3, this liquid level measuring tank 1
A liquid level gauge 146 is arranged at 42. This level gauge 1
46 is connected to the controller 52. Level gauge 146
Is equipped with a float 150 and an electrode 152. When the liquid level falls below a predetermined range (lower limit level), the float 150 detects the level, and when the level of the dyeing liquid rises and exceeds a predetermined level. Electrode 152 on (upper limit level)
It is designed to be detected by. The controller 52 is
When the liquid level of the dyeing liquid in the liquid level measuring tank 142 is out of a predetermined level, an alarm is issued to notify the worker. The liquid level gauge 146 is not limited to the above configuration as long as it can detect whether or not the liquid level of the staining liquid in the liquid level measuring tank 142 is out of the predetermined level range.

In the dyeing liquid recovery tank 92, the dyeing liquid is replenished so that the liquid level of the dyeing liquid is maintained at a predetermined level. For example, in the dyeing liquid recovery tank 92, the volume of the dyeing liquid recovery tank 92 at the upper and lower limit level positions is 1 each.
It is set to 2.8 liters and 9.4 liters. The capacity of the overflow pipe 91 up to the upper end (overflow level) is set to 19.7 liters.

The volume of the dyeing liquid recovery tank 92 is set in consideration of the components of the dyeing liquid, the processing capacity of the waterless planographic plate 12, and the like.
It is set to prevent the bubbles of the dyeing solution from being discharged unnecessarily. The replenishing amount of the usual dyeing solution is determined according to the treatment amount of the waterless planographic plate 12, and the replenishing amount is 5 to 5.
100 cc / m ² (preferably 10~60cc / m ²⁾ is set to. Further, in the waterless planographic developing apparatus 10, the liquid level of the dyeing solution is set to be close to the upper limit level when the apparatus is stopped and stabilized, and the dyeing solution is recovered even if the apparatus is operated and the dyeing solution is circulated. The liquid level of the dyeing solution in the tank 92 does not fall below the lower limit level.

As shown in FIGS. 2 and 3, a heater 88 is provided at the bottom of the dyeing liquid recovery tank 92, which is connected to a power source (not shown) to heat the dyeing liquid to a predetermined temperature. Is set to keep in the range. The temperature of the dyeing solution is set to 15 to 45 ° C. (preferably 20 to 40 ° C.) and controlled by the controller 52. Note that, as shown in FIG. 3, the lower limit level of the dyeing solution is set so that the heater 88 is immersed in the dyeing solution, and the heater 88 is prevented from being heated.

Further, in the waterless planographic developing apparatus 10, a liquid level measuring tank for communicating with the developing water collecting tank 22 through a pipe 138 and maintaining the liquid level of the developing water in the developing water collecting tank 22 within a predetermined range. 136 is provided. A liquid level gauge 146 is also provided in the liquid level measuring tank 136, and monitors so that the liquid level of the developing water in the developing water recovery tank 22 does not fall outside a predetermined range.

Next, the operation of this embodiment will be described. The waterless planographic plate 12 on which an image is printed by an image printing device (not shown) passes above the waterless planographic plate detector 86 and then is inserted into the developing section 14. The light-exposed portion of the waterless planographic plate 12 that is inserted into the developing portion 14, that is, the exposed portion is cured and adheres to the silicone rubber layer, and the unexposed portion is swollen or eluted by the developing water. Has become.

From this state, the protective film laminated to protect the surface of the waterless planographic plate 12 is peeled off, and then the waterless planographic plate 12 is inserted into the developing section 14. The waterless planographic plate 12 is coated with the developing water ejected from the spray pipe 34 while being nipped and conveyed by the pair of conveying rollers 24 and 25 of the developing section 14. As a result, the photosensitive layer in the unexposed portion (image portion) of the waterless planographic plate 12 swells and the silicone rubber layer is easily peeled off from the support.

Further, the waterless planographic plate 12 has a conveying roller pair 26.
It is nipped and conveyed by the brush roller 30 and the roller 32.
Is inserted between and. Brush roller 30 is waterless planographic 1
The upper surface of the waterless planographic plate 12 passing over the roller 32 is rubbed by rotating in a direction (counterclockwise direction in FIG. 2) corresponding to the conveying direction of 2. The developing water is also supplied to the brush roller 30, and the surface of the waterless planographic plate 12 is rubbed by the brush roller 30 while being coated with the developing water, and the silicone rubber layer swollen or eluted by the developing water is scraped off. As a result, the photosensitive layer and the silicone rubber layer corresponding to the exposed portion (non-image portion) remain on the waterless planographic plate 12 and a positive image is formed.

The excess developing water after the developing water applied to the surface of the waterless planographic plate 12 is dropped into the developing water recovery tank 22 and is recovered.

Further, the waterless planographic plate 12 in which the silicone rubber layer in the unexposed portion (image portion) is scraped off by the brush roller 30 is re-coated with the developing water when being sandwiched and conveyed by the conveying roller pair 28, and the conveying roller is conveyed. The developing water is squeezed out as it is sent to the pair 28. The waterless planographic plate 12 in this state is inserted between the conveying roller pair 94 of the dyeing section 16.

In the dyeing section 16, the waterless planographic plate 12 is nipped and conveyed by the conveying roller pair 94 and inserted between the brush roller 100 and the roller 32. This brush roller 100
Rotates in the direction opposite to the transport direction of the waterless planographic plate 12 (counterclockwise direction in FIG. 2), and the dyeing solution supplied by being guided by the flow straightening plate 106 is applied to the upper surface of the waterless planographic plate 12. As a result, the dyeing solution adheres to the photosensitive layer, that is, the unexposed area (image area) and is dyed.

Further, the waterless planographic plate 12 has a pair of conveying rollers 96.
The dyeing solution is squeezed while being squeezed while the dyeing solution, which is inserted between the rollers and guided by the flow straightening plate 106, is applied to the surface of the roller above the conveying roller pair 96 and is squeezed. When the waterless planographic plate 12 is dyed, the image portion and the non-image portion can be easily discriminated from each other, and the plate inspection operation can be facilitated.

The waterless planographic plate 12 having the dyed image area is sent out from the dyeing section 16 and then inserted between the pair of conveying rollers 98, and the dyeing solution remaining on the surface is wiped off. In addition, you may provide a washing process and a drying process after this.

As shown in FIG. 2, the developing water recovery tank 22
The developing water therein is sent to the spray pipes 34, 40, 42 by the operation of the circulation pump 44, and is applied to the waterless planographic plate 12 conveyed through the developing section 14. Excess developing water after the application of the waterless planographic plate 12 falls and is collected in the developing water collecting tank 22. The development water collected in the development water recovery tank 22 contains development residues such as a silicone rubber layer separated from the surface of the waterless planographic plate 12, and these development residues are
Since the specific gravity is lighter than the developing water, it floats on the surface layer of the developing water in the developing water recovery tank 22.

When the waterless planographic developing apparatus 10 is operating, the solenoid valve 62 is opened along with the processing of the waterless planographic plate 12 and tap water serving as developing water is supplied into the developing water recovery tank 22 of the developing section 14. As a result, in the developer water recovery tank 22, the excess developer water is discharged from the overflow pipe 50 together with the development residue. In the developing water recovery tank 22, the developing water can be supplied and the contaminated developing water can be discharged at the same time to develop the waterless planographic plate 12 with relatively fresh developing water. The developing water recovery tank 22 may be provided with a debris removing means for separating and discharging only the developing debris from the developing water.

The developing water may be supplied to the developing water collecting tank 22 by detecting the waterless planographic plate 12 inserted into the developing section 14 by the waterless planographic detector 86. In this case, the replenishing amount of water is 250 to 2000cc /
Can be set to minutes.

In the next dyeing section 16, the dyeing solution is applied to the surface of the waterless planographic plate 12, and the excess dyeing solution is recovered in the dyeing solution recovery tank 92. The developing water adheres and remains on the surface of the waterless planographic plate 12 inserted into the dyeing section 16, so that the developing water is brought into the dyeing solution collected in the dyeing solution recovery tank 92 after dyeing. Further, the dyeing solution deteriorates depending on the dyeing amount of the waterless planographic plate 12. Therefore, based on the detection result of the area of the waterless planographic plate 12 by the waterless planographic detector 86, the control device 52 operates the dyeing solution supply pump 124 and the water supply pump 130 at a constant ratio into the dyeing solution recovery tank 92. The stable dyeing process can be performed for a long period of time without reducing the dyeing ability of the dyeing solution.

In the dyeing section 16, the surface of the waterless planographic plate 12 is rubbed by the brush roller 100 while applying the dyeing solution. The rotation of the brush roller 100 causes the dyeing liquid to scatter and collide with the inner surface of the brush cover 107 to cause foaming. The bubbles of the dyeing solution are collected in the dyeing solution recovery tank 92, but the bubbles may not gradually disappear and gradually grow as the treatment of the waterless planographic plate 12 progresses. The bubbles on the surface of the dyeing liquid in the dyeing liquid recovery tank 92 approach the upper end level of the overflow pipe 91 as they grow. When the bubbles of the dyeing liquid reach the upper end of the overflow pipe 91, they flow into the overflow pipe 91 and are discharged to the waste liquid tank 72. As a result, the bubbles of the dyeing liquid do not exceed the opening of the dyeing tank main body 90. That is, even if the dyeing liquid in the dyeing liquid recovery tank 92 foams and bubbles grow, the dyeing tank main body 9
Since it does not overflow from 0, the seal between the opening of the dyeing tank main body 90 and the side plate 15C of the casing 15 can be simplified. As a result, the waterless planographic developing apparatus 1
Assembly work of 0 becomes easy.

With respect to the dyeing liquid in the dyeing liquid recovery tank 92, whether the control device 52 is out of a predetermined liquid level (between the upper limit level and the lower limit level) by the liquid level gauge 146 in the liquid level measuring tank 142. Are watching. Therefore, it is possible to prevent the heater 88 from being dry, and to prevent bubbles of the dyeing liquid from reaching the upper end of the overflow pipe 91 and being discharged from the overflow pipe 91 due to the rise of the liquid level of the dyeing liquid. can do.

In this embodiment, the capacity of the dyeing liquid recovery tank 92 is set in consideration of the foaming state of the dyeing liquid from the components of the dyeing liquid. When the set amount of dyeing liquid is used, the foaming of the dyeing liquid occurs. To prevent it from overflowing and being discharged. When the bubbles of the dyeing solution are discharged more than necessary, the replenishing amount of the dyeing solution has to be increased, but the running cost of the waterless lithographic developing apparatus 10 can be suppressed by suppressing the discharge amount of the dyeing solution.

In this embodiment, the present invention is applied to the dyeing section 16 of the waterless planographic developing apparatus 10 in which the processing liquid is particularly likely to foam, but the present invention is applied to the developing tank main body 20 of the developing section 14. You may apply. Further, in this embodiment, the waterless planographic developing apparatus 10 was applied as the photosensitive planographic printing plate processing apparatus, but it may be applied to another photosensitive planographic printing plate processing apparatus for processing another photosensitive planographic printing plate, In particular, in a device using a treatment liquid that easily foams, the sealing work for preventing the liquid from leaking from the opening of the treatment tank can be simplified and the device can be easily assembled.

Further, in the present embodiment, each of the developing section 14 and the dyeing section 16 is provided with one developing water recovery tank 22 and one dyeing solution recovery tank 92. It is not limited. An apparatus that stores the same processing liquid in a plurality of processing tanks and performs processing may be used.

[0087]

As described above, in the photosensitive lithographic printing plate processing apparatus according to the present invention, even when bubbles of the processing liquid are generated due to the progress of the processing of the photosensitive lithographic printing plate and the photosensitive lithographic printing plate is grown in the processing tank,
It does not overflow from the processing tank. Therefore, the sealing of the upper opening of the processing tank can be simplified, and the excellent effect of significantly improving the workability in manufacturing the device can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side view of a waterless planographic developing apparatus applied to this embodiment.

FIG. 2 is a schematic configuration diagram showing a waterless planographic developing apparatus applied to this embodiment.

FIG. 3 is a schematic cross-sectional view of the main body of the dyeing tank as seen from the transport direction of the waterless planographic printing plate.

[Explanation of symbols]

10 Waterless planographic developing device (photosensitive planographic printing plate processing device) 12 Waterless planographic (photosensitive planographic printing plate) 14 Developing section 16 Dyeing section 20 Developing tank main body 90 Dyeing tank main body 91 Overflow pipe 92 Dyeing liquid collecting tank 100 Brush Roller 142 Liquid level measuring tank 146 Liquid level gauge

[Procedure amendment]

[Submission date] March 8, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art A silicone rubber layer is used as an ink repellent layer.
Waterless photosensitive planographic printing plate (hereinafter referred to as "waterless planographic printing plate")
For example , Japanese Patent Publication No. 44-23042 and Japanese Patent Publication No. 46-
JP-A-48-94504 and JP-A-50-50102, and a waterless planographic printing plate in which a photo-soluble or photo-insoluble photosensitive layer and a silicone rubber layer are laminated on a substrate described in JP-A-16044. There is proposed a waterless planographic printing plate in which a photoadhesive photosensitive layer and a silicone rubber layer are laminated on a substrate described in each of the above publications. Such a waterless lithographic plate can print tens of thousands of sheets without using dampening water.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

In the waterless lithographic developing apparatus for developing and dyeing the waterless lithographic plate as described above, a treatment liquid is applied to the surface of the waterless lithographic plate in order to uniformly and surely perform the developing treatment and the dyeing treatment of the waterless lithographic plate. While applying, it is rubbed with a brush or the like. As a result, in the waterless lithographic plate, the silicone rubber layer on the photosensitive layer swollen or eluted by the developing water is surely removed, and the dyeing solution is uniformly applied to the region where the silicone rubber layer is removed. Further, in the waterless lithographic developing apparatus, the processing liquid applied to the surface of the waterless lithographic plate is collected in the processing tank and used again for the processing of the waterless lithographic plate.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

Since the roller 32 is freely rotatable, when the waterless planographic plate 12 is conveyed while the brush roller 30 is stopped, the waterless planographic plate 12 is rotated by the rotation of the roller 32. , And is smoothly inserted between the brush roller 30 and the roller 32. Such an operation is not performed during the actual developing process, but is performed when inspecting the brushing state of the brush roller 30. That is, the whole exposed waterless planographic plate 12 or the unexposed waterless planographic plate 1
2 is sandwiched between the brush roller 30 and the roller 32, and the brush roller 30 is rotated in a stopped state to determine whether or not the brush width is appropriate.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

A filter 46 is disposed in the middle of the conduit 48, and removes residues in the developing water passing through the conduit 48 (mainly developing residues consisting of a silicone rubber layer rubbed off from the surface of the waterless planographic plate 12). It is designed to be filtered. The mesh of this filter is 10 μ to 500 μ (preferably 50 μ to 30 μ).
0 μ) is used. This filter 46
For example, it is replaced every time a predetermined amount of waterless planographic plate 12 is processed. A flow rate sensor (not shown) is provided in the middle of the pipeline 38 to detect the flow rate of the developing water passing through the pipeline 38, and when the flow rate of the developing water passing through the pipeline 38 becomes a predetermined flow rate or less, You may make it announce the replacement time.
A general flow meter can be used as the flow sensor, but a rotary sensor is preferable in order to downsize the device.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

The dyeing solution replenishing device includes a dyeing solution tank 122 containing the dyeing solution, a dyeing solution supply pump 124 for supplying the dyeing solution into the dyeing solution recovery tank 92, and a dyeing solution supplied to the dyeing solution recovery tank 92. It is composed of a water tank 128 for diluting the liquid and a water supply pump 130. Staining solution replenisher
The ratio of water to dilution water is optional, but for stain solution "1"
So that it can be changed like dilution water "1-9"
Is desirable.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0067

[Correction method] Change

[Correction content]

The volume of the dyeing liquid recovery tank 92 is set in consideration of the components of the dyeing liquid, the processing capacity of the waterless planographic plate 12, and the like.
It is set to prevent the bubbles of the dyeing solution from being discharged unnecessarily. Incidentally, the replenishment of the normal stain is made in accordance with the processing amount of waterless planographic 12, the replenishing amount is 5-1
It is set to 00 cc / m ² (preferably 10 to 60 cc / m ² ). Further, in the waterless planographic developing apparatus 10, the liquid level of the dyeing solution is set to be close to the upper limit level when the apparatus is stopped and stabilized, and the dyeing solution is recovered even if the apparatus is operated and the dyeing solution is circulated. The liquid level of the dyeing solution in the tank 92 does not fall below the lower limit level. Also, stain
The replenishment method is based on the surface level of the staining solution.
It doesn't matter. As a method,
Immediately after adding the liquid, the surface level of the dyeing solution reached the specified level.
When not in use, replenish the weight loss or dye solution at regular intervals.
Includes bell refill. Level of dyeing solution at regular intervals
The replenishment based on the standard
Automatically determines whether or not the liquid level of
When the prescribed liquid level is not reached, the prescribed liquid level is
The stain solution is replenished until the level is reached.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0070

[Correction method] Change

[Correction content]

Next, the operation of this embodiment will be described. Waterless image was baked at image sintered TsukeSo location not shown planographic 12 is inserted into the developing unit 14 after passing through the upper of the waterless planographic detector 86. The light-exposed portion of the waterless planographic plate 12 that is inserted into the developing tank 14, that is, the exposed portion is cured and adheres to the silicone rubber layer.
The photosensitive layer is in a state capable of being swollen or eluted by developing water.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0072

[Correction method] Change

[Correction content]

Further, the waterless planographic plate 12 has a conveying roller pair 26.
It is nipped and conveyed by the brush roller 30 and the roller 32.
Is inserted between and. Brush roller 30 is waterless planographic 1
The upper surface of the waterless planographic plate 12 passing over the roller 32 is rubbed by rotating in a direction (counterclockwise direction in FIG. 2) corresponding to the conveying direction of 2. The developing water is also supplied to the brush roller 30, and the surface of the waterless planographic plate 12 is rubbed by the brush roller 30 while being coated with the developing water, so that the silicone rubber layer on the photosensitive layer swollen or eluted by the developing water is removed. Be scraped off. This is the waterless planographic 12 exposed portion (non-image portion) to correspond to that sensitive optical layer, the remaining silicone rubber layer, a positive image is formed.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Change

[Correction content]

The developing water may be supplied to the developing water collecting tank 22 by detecting the waterless planographic plate 12 inserted into the developing section 14 by the waterless planographic detector 86. In this case, the replenishing amount of water is 100 to 10,000cc
/ Min, preferably 200 to 5000 cc / min .

[Procedure Amendment 10]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (2)

[Claims] 1. A photosensitive lithographic printing plate processing apparatus in which a photosensitive lithographic printing plate is processed with a processing liquid while being conveyed, the processing liquid used for the processing is stored in a processing tank, and the processing liquid is used again for the processing. A predetermined range of a lower limit that does not expose the processing liquid temperature means at the bottom of the processing tank with an upper limit at which the bubbles of the processing liquid foaming the liquid level of the processing liquid stored in the processing tank do not exceed the opening of the processing tank. The photosensitive lithographic printing plate processing apparatus according to claim 1, further comprising: a maintaining unit that maintains the temperature of the opening of the processing liquid and a discharging unit that discharges bubbles of the processing liquid exceeding a predetermined level between the opening and the upper limit. 2. The photosensitive lithographic printing plate processing apparatus according to claim 1, wherein the processing tank has a deep bottom and a shallow bottom, and the shallow bottom is provided at a level between the discharging means and the opening. .