JPH0730379Y2 - Photosensitive lithographic printing plate processing liquid application device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a photosensitive lithographic printing plate processing liquid application device for processing a photosensitive lithographic printing plate having an image printed thereon.

[Prior Art] In a photosensitive lithographic printing plate automatic developing machine, a photosensitive lithographic printing plate on which an image has been printed is conveyed along a conveying line while being developed by a developing solution in a developing section, and rinsed in a water washing section or a rinse gum. Rinse with liquid.

Next, the photosensitive lithographic printing plate is conveyed through the gum liquid coating section of the gum liquid coating device, and the gum liquid is applied to the photosensitive lithographic printing plate by a spray pipe arranged at least one of above and below the conveying line, and the desensitizing oil is not applied. Is processed. After that, the photosensitive lithographic printing plate coated with the gum solution is conveyed to the next processing step by a pair of holding and conveying rollers.

However, in the gum solution application section, the photosensitive lithographic printing plate is conveyed substantially horizontally, and since the viscosity of the gum solution is high and the fluidity is poor, the gum solution is uniformly applied to the upper surface of the photosensitive lithographic printing plate by a spray pipe. However, there is a problem in that uneven coating occurs.

Therefore, in order to solve this problem, the applicant of the present invention filed a Japanese patent application 63-
In 63187, a gum solution coating section in which a pair of conveying roller pairs are arranged in the gum solution coating section so that the photosensitive lithographic printing plate coated with the gum solution is inserted in a state in which it is inclined downward by a predetermined angle with respect to the horizontal line. The structure of is proposed.

According to the present invention, as shown in FIG. 5, the conveying roller 14 arranged on the upstream side of the gum solution application unit, for example, in the rinse tank.
2 the upper roller is inclined at an angle α with respect to the vertical direction, the photosensitive lithographic printing plate 12 is inclined at an angle α with respect to the horizontal, and is sent out, and the conveying roller 144 is disposed above the gum solution application section.
It is a structure to be inserted between. A gum solution discharge pipe 146 is arranged above the photosensitive lithographic printing plate 12 between the carry roller 142 and the carry roller 144.
A guide roller 14 is provided at the bottom of the photosensitive lithographic printing plate 12 facing the
8 are arranged.

With this structure, the photosensitive lithographic printing plate 12 is conveyed by the conveying roller 142.
Is sent out at an angle α with respect to the horizontal and is inserted between the transport rollers 144. By this conveyance, a gum solution reservoir (hatched portion in FIG. 5) having a substantially triangular cross section in the conveyance direction is formed between the photosensitive lithographic printing plate and the upper conveying roller 144, and the gum liquid is transferred to the photosensitive lithographic printing plate. It can be applied uniformly to the surface.

[Problems to be Solved by the Invention] However, the rear end of the photosensitive lithographic printing plate has a conveyance roller.
When it is sent out from between 142, the support of the rear end part disappears, so the rigidity of the photosensitive lithographic printing plate is lost due to the weight of the gum liquid in the gum liquid reservoir formed on the photosensitive lithographic printing plate, and the photosensitive lithographic printing plate is The trailing edge of the plate hangs down (shown by the dotted line in Fig. 5)
Or because it is in a state close to horizontal, gum liquid overflows from the rear end of the photosensitive lithographic printing plate and is applied to the transport roller 142,
The gum solution adheres to the transport roller 142. There is a problem in that the gum solution that adheres to the photosensitive lithographic printing plate that is dried and then cured and then conveyed to the photosensitive lithographic printing plate is damaged.

Further, when the gum solution applying section is used alone, there is no problem even if the gum solution overflows from the photosensitive lithographic printing plate, but when the gum solution is continuously arranged in the processing tank of the previous step, The gum solution overflowing from the lithographic printing plate travels along the transport roller 142 and mixes into the pretreatment process bath, which contaminates the pretreatment process bath. Further, when the gum solution is mixed and the processing solution is contaminated, the frequency of replenishment and replacement of the processing solution is increased in order to eliminate the contamination, resulting in poor workability.

Further, the photosensitive lithographic printing plate is conveyed from the conveying roller 142 at an angle α with respect to the horizontal direction, and then the front end portion thereof passes between the conveying rollers 144, and the rear end portion thereof is separated from the conveying roller 142. When the rollers 142 are arranged vertically, they are conveyed in the horizontal direction, so that the trailing edge of the photosensitive lithographic printing plate sent from the conveying rollers 142 tends to return to the horizontal direction. Therefore, since the trailing edge of the photosensitive lithographic printing plate actually hangs from the horizontal, the gum solution in the gum solution pool formed on the photosensitive lithographic printing overflows from the trailing edge of the photosensitive lithographic printing plate, The same problem occurs with.

In consideration of the above facts, the present invention is a process for a photosensitive lithographic printing plate in which the processing liquid can be uniformly applied to the photosensitive lithographic printing plate and the processing liquid does not flow back from the processing liquid reservoir. The purpose is to obtain a liquid coating device.

[Means for Solving the Problems] The present invention relates to a photosensitive lithographic printing plate processing liquid application device for processing a photosensitive lithographic printing plate on which an image has been printed, in which the inserted photosensitive lithographic printing plate is leveled. A first conveying roller pair that is inclined downward at a first inclination angle with respect to the direction; and a photosensitive lithographic printing plate after the photosensitive lithographic printing plate sent from the first conveying roller pair is inserted. A second conveyance roller pair for feeding the plate downward with a second inclination angle larger than the first inclination angle with respect to the horizontal direction; the first conveyance roller pair, and the second conveyance roller A treatment liquid supply unit that is provided above the conveyance path of the photosensitive lithographic printing plate between the pair and supplies the treatment liquid to the surface of the photosensitive lithographic printing plate that is conveyed along the conveyance path. It has a characteristic structure.

[Operation] Therefore, the photosensitive lithographic printing plate sent from the first pair of conveying rollers in the state of being inclined downward at the first inclination angle is
The treatment liquid is applied to the surface by the treatment liquid supply means,
Is inserted between the pair of conveying rollers. A treatment liquid reservoir having a substantially triangular cross-section is formed on the upper surface of the second conveying roller pair and the photosensitive lithographic printing plate, and the treatment liquid is uniformly applied to the surface of the photosensitive lithographic printing plate.

The photosensitive lithographic printing plate to which the treatment liquid is uniformly applied is sent out from the second conveying roller pair and conveyed to the next step. Second
Since the pair of transport rollers feeds the photosensitive lithographic printing plate in a state in which the photosensitive lithographic printing plate is inclined downward at the second inclination angle larger than the first inclination angle, the rear end portion of the photosensitive lithographic printing plate passes through the first roller pair. After that, even if the photosensitive lithographic printing plate is bent due to the weight of the processing liquid in the processing liquid pool, the photosensitive lithographic printing plate is still tilted downward from the horizontal, so that the processing liquid in the processing liquid pool flows backward on the photosensitive lithographic printing plate. Therefore, the first conveying roller pair is not wetted.

[Advantages of the Invention] As described above, since the treatment liquid is applied on the coating surface, the treatment liquid can be uniformly applied to the coating surface of the photosensitive lithographic printing plate, and the treatment liquid does not flow back. Have the effect.

[Embodiment] FIG. 1 shows an embodiment of the photosensitive lithographic printing plate automatic developing machine 10.

The photosensitive lithographic printing plate automatic developing machine 10 includes a developing tank 14 for developing a photosensitive lithographic printing plate (hereinafter referred to as PS plate) 12 on which an image is printed by a printing device (not shown), and this developing tank.
A developer collection tank 16 for collecting the developer overflowed from 14, a washing tank 18 for washing the developer adhering to the PS plate 12 with water, and a rinse treatment tank 20 for rinsing the PS plate 12 or treating the rinse gum solution. , Are provided.

FIG. 3 shows a main part of a gum solution coating device 220 which is a processing liquid coating device for a photosensitive lithographic printing plate according to the present invention. This gum solution coating device 220 is the same as the rinse treatment tank 2 described above.
It may be arranged on the rear stage side of 0, or the rinse treatment and the gum solution treatment may be simultaneously performed by being integrated with the rinse treatment tank 20.

As shown in FIG. 1, a pair of transport rollers 22 are arranged on the side of the PS plate 12 to be inserted into the developing tank 14. The PS roller 12 is transferred from the printing device (not shown) to the developing tank 14 by the transport roller 22.
Is transported inward.

The developing tank 14 has a substantially inverted mountain shape in which the upper part is opened and the central part of the bottom part is projected downward. A developing solution 24 is contained in the developing tank 14. In the developing tank 14, guide rollers 26, 28, 30, 32, 34, 36, 38 are provided along the bottom wall.
Are arranged. These guide rollers 26 to 38 are hung between a pair of side plates (not shown) and rotatably supported. A skewer roller 40 having a guide function and a spray function is arranged between the guide rollers 34 and 36.

As shown in FIG. 2, in this skewered roller 40, a guide roller 41C is rotatably supported on the outer circumference of a spray pipe 41B having a plurality of discharge ports 41A provided at predetermined intervals along the axial direction. It is configured. Therefore, the skewered roller 40 discharges the developing solution from the discharge port 41A and guides the PS plate 12 by the guide roller 41C. A guide roller 42 is arranged above the guide roller 26 near the transport roller 22. Further, a guide roller 44 is provided above the guide rollers 28 and 30, a guide roller 46 is provided above the guide rollers 32 and 34, and a space between the skewer rollers 40 and the guide rollers 36 is provided. Above the guide roller
48 and a guide roller 50 above the guide roller 38.
However, like the guide rollers 26 to 38, they are respectively supported by a pair of side plates (not shown).

A guide roller 34 and a skew roller 40 are provided in the center of the developing tank 14.
And a pair of conveyance rollers 52 are arranged between them. The carrying roller 52 is supported by the side plate like the guide rollers 26 to 38, and is rotated by transmitting the driving force of the driving means (not shown).

Therefore, the PS plate 12 nipped and conveyed by the conveyance roller 22 and inserted into the developing tank 14 is guided between the guide roller 44 and the guide rollers 28 and 30 by passing between the guide roller 42 and the guide roller 26. , Is obliquely lowered through the space between the guide roller 46 and the guide rollers 32, 34, and is inserted between the conveyance rollers 52,
After passing the transport roller 52, the skewer roller 40 and the guide roller 4
Guided by 8, 36, 38, it rises diagonally and guide roller 50
And is sent out above the developer recovery tank 16. In this way, the PS plate 12 is the developer in the developing tank 14.
It is immersed in 24 and developed.

A bending portion that is bent toward the outside of the developing tank 14 is formed on the side wall on the downstream side of the developing tank 14 in the conveying direction of the PS plate 12, and the vertical height of this bending portion is the conveying direction of the PS plate 12. It is lower than the upstream side wall. Therefore, the developer in the developing tank 14
Whenever 24 overflows, the developer recovery tank 16
Be recovered to.

One end of a pipeline 54 communicates with the bottom of the developing tank 14. A circulation pump 56 is arranged in the middle of the pipe 54, and the other end communicates with the skewer roller 40 and the spray pipe 58 arranged in the developer 24 in the developing tank 14. As a result, the developing solution 24 in the developing tank 14 is circulated while being sprayed, so that more effective stirring is performed.

Further, one end of the pipeline 60 is opened at the bottom of the developer recovery tank 16, and the other end is opened above the developer tank 14 via a pump 62 in the middle. As a result, the developer collected by overflowing into the developer collecting tank 16 is returned into the developing tank 14.

A pipeline 66 communicating with the developer replenishing tank 64 is connected to the developing tank 14.
But it is open. A replenisher pump 68 is arranged in the middle of the pipeline 66. Further, to the developing tank 14, a water supply tank 65
A pipe 67 communicating with the pipe 67 is opened, and a water supply pump 69 is arranged in the middle of the pipe 67. As a result, the developer replenisher (stock solution) in the developer replenisher tank 64 and the water supply tank 65
The water in the tank is supplied to the developing tank 14 so that the water in the tank has a predetermined ratio.

Drainage lines 55 and 61 are opened at the bottoms of the developing tank 12 and the replenishing tank 14, and are connected to a drainage tank 57, and valves 55A and 61A are provided in the middle of the drainage lines 55 and 61. It is arranged.

The pump 62, the replenishing solution pump 68, and the circulation pump 56 are connected to a control unit 70 provided in the photosensitive lithographic printing plate automatic developing machine 10 to control the driving.

Further, a detector 72 is arranged on the insertion side of the transport roller 22 and is inserted into the photosensitive lithographic processing machine 10 by detecting the insertion state of the PS plate 12 into the photosensitive lithographic printing plate automatic developing machine 10. The area of the PS plate 12 is detected. This detector 72 is a control unit 70.
Connected to.

Further, a fatigue detector 74 is arranged in the middle of the pipeline 54, and the fatigue of the developer is measured by detecting the electric conductivity of the developer. This fatigue detector
74 is also connected to the control unit 70.

As shown in FIG. 1, a pair of upper and lower conveying rollers 76 are arranged on the upper side wall of the developer collecting tank 16 and the washing tank 18 which are adjacent to each other. These transport rollers 76 are supported by a pair of side plates (not shown), and rotate by receiving the driving force of a driving means (not shown). A collecting roller 78 arranged in the developer collecting tank 16 is in contact with the lower carrying roller 76. As a result, the developer 24 carried out by the PS plate 12 and attached to the conveying roller 76 is collected in the developer collecting tank 16.

In the water washing tank 18, a pair of upper and lower transport rollers 82 are arranged on the downstream side in the transport direction of the PS plate 12. Like the transport roller 76, these transport rollers 82 are also supported by a pair of side plates (not shown), and are driven in the same manner.

Therefore, the PS plate 12 delivered from the developing tank 14 is transported by the transport roller 76.
The sheet is sandwiched and conveyed by the sheet, is inserted between the pair of conveying rollers 82, and is sent out to the rinse treatment tank 20.

One end of a pipe line 88 is opened at the bottom of the washing tank 18, and the other end thereof has skewer rollers 84 and 86 similar to the skewer roller 40 described above arranged between the transport roller 76 and the transport roller 82. It is in communication with. Further, a pump 90 is arranged in the middle of the pipe line 88, and supplies the washing water in the washing tank 18 to the skewer rollers 84, 86.
Rinse the PS plate 12 with water. A collecting roller 80 is in contact with the lower transport roller 76. This allows the lower transport roller
The washing water attached to 76 is collected in the washing tank 18.

Further, a pipe 89 communicating with the water supply tank 65 is opened at the bottom of the washing tank 18, and a water supply pump 91 is arranged in the middle of the pipe 89. Further, a drainage pipe 89A is opened at the bottom of the washing tank 18 and communicates with a drainage tank 89B. A valve 89C is arranged in the middle of the drainage pipe 89A.

Above the rinsing tank 20, the carrying roller 92 and the carrying roller are provided.
99 is arranged and is hung and supported between a pair of side plates (not shown). A driving force of a driving unit (not shown) is transmitted to the transport rollers 92 and 99 to rotate, and the PS plate 12 delivered from between the transport rollers 82 is transported.

A rinsing liquid discharge pipe 98 is arranged above the transport path of the PS plate 12 between the transport rollers 92 and 99. The rinse liquid discharge pipe 98 is provided with a plurality of discharge ports along the axial direction, and discharges the supplied rinse liquid onto the PS plate 12. The rinse liquid discharge pipe 98 communicates with one end of the pipeline 102, and the other end of the pipeline 102 penetrates the bottom of the rinse treatment tank 20 and communicates with the rinse treatment tank 20. A circulation pump 134 is arranged in the middle of the pipe line 102, and the rinse liquid stored in the rinse treatment tank 20 is supplied to the rinse liquid discharge pipe 98.
Is supplied to.

FIG. 3 shows a gum solution coating device (hereinafter referred to as "desensitizing treatment tank").
220 gum solution application structures are shown.

A conveying roller 192 and a conveying roller 199 are arranged above the desensitizing treatment tank 220 and are hung and supported between a pair of side plates (not shown). A driving force of a driving unit (not shown) is transmitted to the transport rollers 192 and 199 to rotate, and the PS plate 12 delivered from between the transport rollers 182 is transported.

A gum solution discharge pipe 198 is arranged above the transport path of the PS plate 12 between the transport rollers 192 and 199.
The gum liquid discharge pipe 198 is provided with a plurality of discharge ports along the axial direction, and discharges the supplied gum liquid onto the PS plate 12. The gum solution discharge pipe 198 communicates with one end of the pipeline 202, and the other end of the pipeline 202 penetrates the bottom of the desensitizing treatment tank 220 and communicates with the desensitizing treatment 220. A circulation pump 234 is arranged in the middle of the pipeline 202 so that the gum solution stored in the desensitizing treatment tank 220 is a gum solution discharge pipe 198.
Is supplied to.

As shown in FIG. 3, the conveying roller 192 is arranged such that the upper roller is inclined with respect to the lower roller by a predetermined angle δ ₁ . Therefore, the PS plate 1 inserted between the transport rollers 192
2 is sent out in a state of being inclined at an angle δ _{1 with} respect to the horizontal, and is inserted between the transport rollers 199. On the upper surface of the PS plate 12 which is slanted and fed from between the transport rollers 192, the gum liquid itself has a viscosity and a slanting gum liquid pool (third part).
(Shown by hatching in FIG. 4) is formed. As a result, PS version
The gum solution is evenly applied over the entire upper surface of 12.

In the above example, a normal spray pipe is used above the PS plate 12 for discharging the gum solution, but depending on the properties of the PS plate 12, there is a curl that is upward curl (reverse curl). A skewered roller may be used to prevent this.

PS plate sent out at an angle δ _{1 with} respect to the horizontal
As shown in FIG. 3, the upper roller of the carrying roller 199 into which the 12 is inserted is arranged at an angle δ ₂ more inclined than the tilt angle δ ₁ of the upper roller of the carrying roller 192. Therefore, the PS plate 12 is sent out between the transport rollers 199.
Is sent out at an angle δ ₁ + δ _{2 with} respect to the horizontal.
Therefore, even if the rear end of the PS plate 12 is sent out from between the transport rollers 192 and bends and hangs down due to the weight of the gum solution in the gum solution pool, it does not fall below horizontal and the gum solution does not overflow. .

That is, as shown in FIG. 4, the rear end portion of the PS plate 12 that has come out of the nip between the transport rollers 192 rises along the upper roller of the transport roller 192 due to the rigidity of the PS plate 12, and becomes horizontal with respect to the horizontal. Try to keep the angle δ ₁ + δ ₂ . After that, the rear end of the PS plate 12 separated from the transport roller 192 slightly bends as shown by the dotted line in FIG. 4 due to the weight of the gum liquid in the gum liquid reservoir, but since it is inclined with respect to the horizontal, the gum liquid Does not flow back and overflow from the PS version 12. Since the length of the PS plate 12 that forms the gum solution pool becomes shorter as the rear end approaches the conveying roller 199, the inclination of the PS plate 12 becomes larger again. At this time, even if the gum liquid overflows from the gum liquid reservoir, PS version 12
Since the rear end portion is away from the transport roller 192 and the pretreatment unit, the above-mentioned problem does not occur.

Further, a gum solution recovery tank 203 is provided at the bottom of the desensitizing treatment tank 220.
A conduit 203 communicating with B is opened, and this conduit 203
A replenishing solution 235A is placed in the middle of.

The PS plate 12 sent out from the carrying roller 199 with an inclination of δ ₁ + δ ₂ is carried onto the flower-shaped roller 142 arranged downstream of the desensitizing tank 220 and sent into the drying device 140.
In the drying device 140, the drying process is performed while being conveyed to the plurality of flower-shaped rollers 146.

Next, the operation of this embodiment will be described.

PS that is nipped and conveyed by the conveyance rollers 22 into the developing tank 14.
The plate 12 is guided by the guide rollers 42 and 26 and fed.
The PS plate 12 fed into the developing tank 14 has guide rollers 44, 2
It is guided by 8, 30, 46, 32 and 34 and descends to be fed to the central portion of the developing tank 14 and inserted into the conveying roller 52. Conveyor roller
The PS plate 12 nipped and conveyed by the 52 is guided by the skewer roller 40 and the guide rollers 48, 36, 38, and 50 to move up to the developing tank 14
Sent out from within.

In this way, the PS plate 12 is immersed in the developing solution 24 in the developing tank 14 for development processing.

The developing solution 24 in the developing tank 14 is circulated to the developing tank 14 by a circulation pump 56 via a pipe 54.

The PS plate 12 sent out from inside the developing layer 14 is inserted into the carrying roller 76 and is nipped and carried. By this sandwiching, the developer 24 attached to the PS plate 12 is squeezed out by the transport roller 76 and is drained. The squeezed developer 24 travels along the surface of the lower transport roller 76 and is collected by the collecting roller 78 into the developer collecting tank 16. The developer 24 thus collected in the developer collecting tank 16 is pumped through the conduit 60 as described above.
It is returned to the developing tank 14 by 62.

The PS plate 12 transported into the washing tank 18 by the transport rollers 76 is guided by the skewer rollers 84 and 86, inserted into the transport rollers 82, and sandwiched. At this time, the wash water from the skewer rollers 84, 86
It is discharged onto the PS plate 12. As a result, the developer 24 attached to the surface of the PS plate 12 is removed. After washing with water, the washing water is collected in the washing tank 18. The washing water in the washing tank 18 is supplied to the skewered rollers 84, 86 by a pump 90 via a pipe line 88.

The PS plate 12 delivered from the transport rollers 82 is inserted between the transport rollers 92. Then, rinse processing is performed.

Next, the PS plate 12 is inserted into and conveyed by the conveying rollers 192 of the gum solution coating device, and is sent out from between the conveying rollers 192, and is sent between the conveying rollers 199 in an inclined state of the angle δ ₁ . The gum solution is discharged from the gum solution discharge pipe 198 to the surface of the PS plate 12 during this transportation. The gum solution discharged and applied to the PS plate 12 flows along the surface of the PS plate 12 toward the conveying roller 192 side, and the PS plate 12 is affected by the viscosity of the gum solution and the inclination of the PS plate 12.
A triangular gum liquid reservoir is formed between the upper side and the upper conveying roller 192. As a result, the gum solution is uniformly applied to the surface of the PS plate 12. Excess gum solution is collected in the desensitizing tank 220.

The PS plate 12 delivered from the transport roller 199 is further inclined by an angle δ _{2 with} respect to the angle δ ₁ , and is delivered to the flower-shaped roller 142 and inserted into the drying device 140.

Further, from the inclination angle of the PS plate 12 sent out from the conveying roller 192, the PS plate 12 sent out from the conveying roller 199 is sent while being inclined, so when the rear end of the PS plate 12 is sent out from the conveying roller 192, the gum Even if the gum liquid in the liquid pool bends downward, the gum liquid does not overflow. For example, if the inclination angle δ ₁ is 5 ° and the inclination angle δ ₂ is 5 °, 11
In the case of a PS plate having a size of 20 × 1310 mm, when the rear end part comes off from the conveying roller 192, the PS plate 12 tries to maintain an inclination angle of 10 ° with respect to the horizontal, and the rear end part of the conveying roller pair 192 is kept. Ascend along the upper roller. After that, the PS plate 12 is conveyed roller pair 19
When it is separated from 2, the gum solution does not overflow from the gum solution reservoir as shown in FIG. In other words, the PS plate 12 has an angle of 10 °
By inclining to, the deflection of the rear end of the PS plate 12 is compensated.

The inclination angles δ ₁ and δ ₂ are set to 5 ° as an example when the distance L between the conveying roller 192 and the conveying roller 199 is about 80 mm.

Further, in this embodiment, the rinse treatment tank 20 and the desensitizing treatment tank are used.
Although 220 has been described separately, as described above, the rinse treatment tank 20 and the desensitizing treatment tank 220 may be integrated. In this case, the conveying roller 92 and the conveying roller 99 shown in FIG. 1 may be replaced with the conveying roller 192 and the conveying roller 199, and the gum liquid may be ejected from the rinse liquid ejecting pipe 98.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a photosensitive lithographic printing plate automatic developing machine to which the present invention is applied, FIG. 2 is an irradiation diagram of skewer rollers, and FIG. 3 is a photosensitive lithographic printing plate to which the present invention is applied. FIG. 4 is an explanatory view of a processing liquid coating device for a photosensitive lithographic printing plate, and FIG. 4 is a state diagram showing a conveyance state of a photosensitive lithographic printing plate of the processing liquid coating device for a photosensitive lithographic printing plate to which the present invention is applied, and FIG. FIG. 3 is a cross-sectional view showing a treatment liquid application device for a lithographic printing plate. 10 …… Photosensitive lithographic printing plate automatic developing machine 76, 82, 92, 99, 192, 199 …… Conveying rollers 84, 86 …… Skew roller 198 …… Gum liquid discharging means (processing liquid supplying means) 220 …… Desensitization treatment tank (treatment liquid application device for photosensitive lithographic printing plates)

Claims (1)

[Scope of utility model registration request] 1. A photosensitive lithographic printing plate treatment liquid application apparatus for treating a photosensitive lithographic printing plate having an image printed thereon, wherein the inserted photosensitive lithographic printing plate has a first inclination with respect to the horizontal direction. A first conveying roller pair that is sent out in a state of being inclined downward at an angle; and a photosensitive lithographic printing plate that is sent out from the first conveying roller pair and then is inserted into the horizontal direction. A second conveyance roller pair that is inclined downward at a second inclination angle that is larger than the first inclination angle, and a photosensitive lithographic plate between the first conveyance roller pair and the second conveyance roller pair. A photosensitive liquid lithographic printing plate comprising: a processing liquid supply unit, which is provided above a transporting path of the printing plate and supplies a processing liquid to the surface of the photosensitive lithographic printing plate that is transported along the transporting path. Treatment liquid application device.