JP2916036B2 - Sheet material processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material processing in which a processing liquid is supplied while conveying a sheet material, and the sheet material is nipped and conveyed by a pair of rollers to squeeze out and process an excessive processing liquid. Related to the device.

[0002]

2. Description of the Related Art In a photosensitive lithographic printing plate automatic developing machine (hereinafter referred to as a "PS plate processor") for processing a sheet material, for example, a photosensitive lithographic printing plate (hereinafter referred to as a "PS plate"), a PS plate is generally provided in an apparatus. Developing while transporting substantially horizontally,
Processing such as water washing and gum processing is performed.

A PS plate on which an image has been recorded by a printing apparatus or the like,
The developer is sent to the PS plate processor and is immersed in a developer while being transported in the developing tank, or the developer is sprayed on the image recording surface (surface) to be developed.

After the developed PS plate is washed with water in a washing section (washing treatment), a gum solution is applied in a finisher section to protect the plate surface (desensitization treatment) and then dried.

[0005]

However, in the rinsing section, a large amount of rinsing water is sprayed on the plate surface between the two pairs of transport rollers by spraying, and then the excess rinsing water is squeezed out with a squeezing roller to remove it. I have to. In addition, the finisher has a similar structure.

For this reason, it is necessary to provide a processing tank of about 5 to 40 liters of washing water and a large-capacity liquid sending pump. Furthermore, a spray pipe having a large number of discharge ports is required to spray a large amount of washing water, and the apparatus becomes large.

[0007] Further, it is necessary to ensure that the back side of the PS plate has sufficient washing water, and the consumption of the washing water is further increased. Further, at least one (one pair) of spray pipes is required at least above and below the transport path, and the number of parts increases.

Further, the washing water is circulated and used, and since the circulating washing water contains a developer component, if sludge or scum is formed, the discharge port of the spray pipe is clogged or the processing tank is clogged. There is a problem that the sediment is deposited on the bottom and maintenance is poor.

[0009] In addition, the developing roller and the like may adhere to the conveying roller. The upper conveying roller can be easily wiped because the operator can reach it by removing the lid of the device casing.However, for the lower roller, it is time-consuming to remove the upper roller. Costly and poor maintenance.

The present invention has been made in view of the above-described circumstances, and has as its object to provide a sheet material processing apparatus capable of reducing the consumption of a processing solution without impairing processing performance.

Another object of the present invention is to provide a sheet material processing apparatus capable of reducing the number of parts without impairing the processing performance on the back side of the sheet material.

Another object of the present invention is to provide a sheet material processing apparatus capable of improving the maintainability in addition to the above objects.

[0013]

According to a first aspect of the present invention, there is provided a sheet material processing apparatus for squeezing and processing excess processing liquid while nipping and transporting a sheet material between a pair of rollers. A spraying section for dropping the processing liquid upstream of the roller, and a processing liquid dropped from the spraying section provided upstream of the pair of rollers so that the leading end thereof is on the movement locus of the sheet material. A blade for preventing backflow to the upstream side of the roller, and the blade of the pair of rollers.
When part of the lower roller of the sheet
Receives the processing liquid that falls from the width direction edge of the sheet material
And a vertical wall of the tray or near it.
Excessive treatment of the tray at the center of the sheet material width direction
And an outflow portion through which the liquid flows out .

According to a second aspect of the present invention, there is provided a sheet material processing apparatus for squeezing and processing excess processing liquid while nipping and transporting a sheet material between a pair of rollers, wherein the apparatus is provided upstream of the pair of rollers. A spraying section for dropping the processing liquid, and a processing liquid dropped from the spraying section, which is provided upstream of the pair of rollers and whose tip is disposed so as to be in contact with a surface of an upper roller of the pair of rollers. A blade for storing, and a tray for receiving and storing a processing liquid that drops from a width direction end of the sheet material while a part of the lower roller of the sheet material conveying path of the pair of rollers is immersed; An outflow portion for flowing out excess processing liquid in the tray at a longitudinal wall of the tray or at a central portion in the sheet material width direction in the vicinity thereof;

[0015] The invention described in claim 3 is the above-mentioned claim 1 or
Is stored in the tray in the invention described in claim 2.
Cleaning unit that contacts the peripheral surface of the lower roller
It further comprises a material .

[0016]

[0017]

According to the first aspect of the present invention, when the sheet material is conveyed, the tip of the blade comes into contact with the surface of the sheet material. Since a portion surrounded by the blade, the sheet material, and the upper roller serves as a receiving portion of the processing liquid, the processing liquid stays on the surface of the sheet material by dripping a small amount of the processing liquid with a spray pipe. Therefore, the surface of the sheet material conveyed by the pair of rollers can be treated with the treatment liquid.

As described above, by forming the receiving portion of the processing liquid on the surface of the sheet material, the processing can be reliably performed only by dripping a small amount of the processing liquid, and the processing liquid can be processed without impairing the processing performance. Consumption can be significantly reduced. The processing liquid stored on the surface of the sheet material is
The sheet material falls from the widthwise end and reaches the tray.
In this case, the end corresponding to the sheet material width direction end of the tray is
Flows into the department. On the other hand, the processing liquid stored in the pan
The sheet material is pumped up with the rotation by the side roller
After processing the back surface, the tray is returned to the tray. here,
The treatment liquid dropped from the surface of the sheet material has a relatively low degree of fatigue.
The amount of the treatment liquid whose back surface has been treated has a high degree of fatigue. There
At the position corresponding to the center of the tray in the sheet material width direction.
(Receiving the processing liquid that falls from the surface of the sheet material
Outflow that first discharges the processing solution to the position farthest from the
From the processing liquid dropped from the surface of the sheet material
Also, the processing solution that has processed the back side will flow out of the pan first.
Caught. For this reason, the lower roller draws
Fatigue of the treatment liquid that is lifted up and treats the back side of the sheet material
The effort can be reduced. Therefore, processing on the back side
Processing can be performed without reducing the capacity,
There is no need to arrange a spray or the like below the cradle.

According to the second aspect of the present invention, since the tip of the blade is in contact with the surface of the upper roller of the pair of rollers, the processing liquid to be dropped is formed into a V-shape formed by the roller surface and the blade. A treatment liquid film is formed on the roller surface between the roller surface and the blade, staying in the concave portion of the mold, and applying the treatment liquid onto the sheet material with the rotation of the roller.
Can be. Also, the processing liquid stored on the surface of the sheet material
Falls from the widthwise edge of the sheet material to the pan.
You. In this case, the tray corresponds to the end in the sheet material width direction.
Into the end.

According to the third aspect of the present invention, the processing liquid stored on the surface of the sheet material falls from the widthwise end of the sheet material and reaches the tray. In this case, it flows into the end corresponding to the end in the sheet material width direction of the tray.

On the other hand, the processing liquid stored in the receiving tray is pumped up by the lower roller together with the rotation thereof to process the back surface of the sheet material, and then returned to the receiving tray.

Here, the processing liquid dropped from the front surface of the sheet material has a relatively low degree of fatigue, and the processing liquid whose rear surface has been processed has a high degree of fatigue.

Therefore, a position corresponding to the central portion of the tray in the width direction of the sheet material (a position furthest from the position on the liquid flow path from the position for receiving the processing liquid falling and flowing from the surface of the sheet material is desirable).
Is formed at the vertical wall on the upstream side of the conveyance or in the vicinity thereof ) to allow the processing liquid to flow out first, and the processing liquid processed on the back side flows out of the tray earlier than the processing liquid dropped from the surface of the sheet material. I did it. For this reason, the degree of fatigue of the processing liquid that is pumped up from the tray by the lower roller and that processes the back side of the sheet material can be reduced. Therefore, the processing can be performed without lowering the processing capacity on the back side, and there is no need to arrange a spray or the like below the transport path.

According to the third aspect of the present invention, the above-mentioned claim is provided.
The cleaning member is disposed in the tray according to claim 1 in a state in which the cleaning member is in contact with the lower roller, so that the periphery of the lower roller is rotated in accordance with the rotation of the lower roller. The surface can be wiped off. Therefore, in order to frequently remove the dirt such as the developing residue adhered to the lower roller, the trouble of removing the upper roller and the like can be omitted, and the maintainability is improved.

[0025]

1 and 2 show a photosensitive lithographic printing plate automatic developing machine (hereinafter referred to as "PS plate processor") 10 according to this embodiment. PS version processor 10,
A photosensitive lithographic printing plate (hereinafter, referred to as “PS plate”) 12 on which an image is printed by a printing device (not shown) is developed by the PS plate processor 10 and then dried.

As shown in FIG. 1, the PS plate processor 10 has an internal processing unit covered with a casing 14. An insertion table 16 is attached to the casing 14 near the insertion opening of the PS plate 12 (see FIG. 2). PS version 1
2 is placed on the insertion table 16 and inserted into the casing 14 from the insertion opening.

As shown in FIG. 2, a developing section 22 having a developing tank 18 for developing the PS plate 12 and an overflow tank 20 for collecting a developing solution overflowing from the developing tank 18 is provided inside the casing 14. And PS version 1
A washing section 24 for washing the developer adhering to 2 with water and washing with water;
And a finisher unit 26 for applying a gum solution to the PS plate 12 after washing with water to perform a desensitization treatment.

The washing section 24 is provided with a washing waste liquid tank 28, and the finisher section 26 is provided with a gum waste liquid tank 30.
Are arranged.

As shown in FIG. 1, a drying section 31 is provided downstream of the finisher section 26. The drying unit 31 dries the surface of the PS plate 12 by blowing hot air while conveying the PS plate 12 (see FIG. 2) sent from the finisher unit 26 by a number of rollers (not shown). Has become. The dried PS plate 12 is discharged from the PS plate processor 10 and discharged to, for example, a stocker (not shown) that leans on the PS plate 12 and stores the plate.

As shown in FIG. 2, a pair of transport rollers 3 is provided on the side of the developing section 22 where the PS plate 12 is inserted into the developing tank 18.
The PS plate 12 having an image printed thereon is inserted between the pair of transport rollers 32. The pair of transport rollers 32 sends the PS plate 12 toward the developing tank 18 at an angle of 15 ° with respect to the horizontal direction.

The developing tank 18 has a substantially inverted mountain shape with an upper opening and a bottom center protruding downward. The developing tank 18 contains a developing solution. In the developing tank 18, a number of guide rollers 34 having the same diameter are arranged along the bottom. These guide rollers 34
Are rotatable between a pair of side plates of the developing tank 18 in the form of a skew roller.

A guide roller 36 having a larger diameter than the guide roller 34 is provided downstream of the guide roller 32, and a rotating brush roller 38 and a guide roller 40 are provided above the guide roller 34 at the downstream portion. It is rotatably supported between a pair of side plates 18.

A pair of squeezing rollers 42 having a function of squeezing the surface of the PS plate 12 are provided at a central portion in the developing tank 18. These guide rollers 34,
36, 40, rotating brush roller 38 and squeezing roller 42
, A driving force of a driving unit (not shown) is transmitted to rotate and convey the PS plate 12 at a constant speed.

In the vicinity of the bottom of the developing tank 18, the PS plate 12 is arranged to be conveyed with a radius of curvature of 300 to 350 mm by a pair of squeezing rollers 42 and a plurality of guide rollers 34 adjacent thereto. . Therefore, the PS plate 12 nipped and transported by the pair of transport rollers 32 and inserted into the developing tank 18 is transported obliquely through the space between the guide rollers 34, and is obliquely moved downward by the plurality of guide rollers 34. And is inserted between the squeezing rollers 42. The squeeze roller 42 elutes into the developer from the photosensitive layer side of the PS plate 12 (upper side in FIG. 2) to remove waste from the surface thereof, and the waste is transported downstream as the PS plate 12 moves. Quarantine to prevent

The PS plate 1 sent out from the squeeze roller 42
2 is directed obliquely upward by the guide roller 34,
The toner is discharged from the developing tank 18 while being guided by the rotating brush roller 38 and the guide roller 40. By this, PS
The plate 12 is conveyed smoothly and reliably immersed in the developer without applying excessive force.

The guide roller 34 closest to the downstream side of the squeezing roller 42 forms a skewer roller having a plurality of elastic rotating members supported on the outer periphery of its shaft, and the roller shaft is a hollow pipe. I have. In this hollow pipe, a spray pipe 44 having a discharge port opened between elastic rotating members along the axial direction is formed. Spray pipes 46 and 48 are provided above the conveying path of the PS plate 12 and near the pair of squeezing rollers 42. The spray pipes 46 and 48 are provided with a large number of discharge ports (not shown) communicating with the inside along the axial direction on the outer peripheral surface of the hollow pipe, and the axial direction is provided along the width direction of the transport path. The spray pipes 46 and 48 and the spray pipe 44 of the guide roller 34 discharge the developer toward the front and back surfaces of the PS plate 12. Spray pipe 4
Reference numerals 4, 46, and 48 discharge the developer toward the upstream of the PS plate 12, and supply fresh developer while eliminating waste of the PS plate 12 at the early stage of development.

An overflow tank 20 is provided downstream of the developing tank 18 in the transport direction. Above the overflow tank 20, a PS plate 12 is provided with a pair of developing aperture rollers 5.
1 is conveyed. The developing tank 1
8 is bent outward and the tip is located above the overflow tank 20. Therefore, when the developing solution in the developing tank 18 is full and overflows,
The developer overflows and flows into the overflow tank 20.

The liquid level of the developer in the developing tank 18 is covered with a floating lid 50. The floating lid 50 prevents the developing solution from deteriorating by absorbing the carbon dioxide gas in the air and neutralizing the alkali component in the developing solution. Since the floating lid 50 is made of foamed nylon, it floats on the liquid level of the developer in the developing tank 18 and follows the liquid level even if it rises and falls.

On the other hand, the PS plate processor 10 is provided with a washing waste liquid tank 28 of the washing section 24 downstream of the overflow tank 20 of the developing section 22. As shown in FIGS. 3 to 5, a pair of transport rollers 52 are disposed above the washing waste liquid tank 28. These transport rollers 52 are
It is rotatably supported by a side plate (not shown), and rotates by transmitting a driving force of a driving unit (not shown), and forms a transport path for the PS plate 12 sent from the developing unit 22.

The rinsing waste liquid tank 28 stores rinsing water after the developer has been roughly dropped from the PS plate 12 sent out from the developing tank 18. A spray pipe 56 is disposed on the upstream side of the transport roller 52 and above the transport path, and three discharge ports 58 (see FIG. 3) communicating with the inside are provided on the outer periphery of the spray pipe 56. Is provided. These discharge ports 58 are preferably located near the center of the PS plate 12 in the width direction.
Alternatively, it is arranged on the upstream side of the transport . This position is a saucer
The position is optimal on the liquid flow path in 62. The washing water is dropped from the discharge port 58 onto the surface of the PS plate 12, and the surface of the PS plate 12 is washed with the washing water.

On the upstream side of the spray pipe 56,
A blade 60 having flexibility is arranged. The blade 60 is disposed at a position where the tip of the blade 60 interferes with the movement trajectory of the transport path, and comes into sliding contact with the surface of the PS plate 12 to be transported. For this reason, the blade 60 has a function of retaining the washing water dropped from the spray pipe 56 on the PS plate between the roller 52 and the water.

The lower portion of the lower transport roller 52 is accommodated in a tray 62. Rinse water is stored in the receiving tray 62 and is pumped up by the lower transport roller 52 to clean the back surface of the PS plate 12 and to prevent the upper transport roller 52 from drying out.

As shown in FIG. 2, the spray pipe 56
Is connected to one end of a pipe 64, and the other end of the pipe 64 reaches the inside of a washing and replenishing tank 92 via a pump 90. Fresh washing water is stored in the washing replenishing tank 92, and an appropriate amount of washing water can be dropped from the discharge port 58 of the spray pipe 56 by appropriately operating the pump 90. In this embodiment, the discharge capacity of the pump 90 is 33 cc / m ² .

As shown in FIG.
The washing water dropped from the blade 60, the PS plate 12
Is formed on the PS plate 12 in a small amount because the receiving portion is formed by the surface of
It will diffuse along the width direction of the plate 12. Therefore, the surface of the transported PS plate 12 can be sequentially washed with water.

Here, the stored washing water is supplied to the blade 6
0 is in contact with the surface of the PS plate 12, so that P
Backflow on the surface of the S plate 12 is prevented.

Further, the stored washing water falls from both ends in the width direction of the PS plate 12 to the receiving tray 62 below. That is, the rinsing water after the rinsing processing of the surface of the PS plate 12 falls to both ends in the longitudinal direction of the tray 62.

As shown in FIG. 6, a rectangular notch 70 is formed at the longitudinal center of the vertical wall 62A on the upstream side of the tray 62. The notch 70 allows the flushing water stored in the tray 62 to flow out earlier than any other portion. The rinsing water that has flowed out falls into the rinsing waste liquid tank 28 and is discharged.

That is, the washing water flows into the receiving tray 62 from the vicinity of both ends in the longitudinal direction and flows out from the central part in the longitudinal direction. Therefore, relatively fresh washing water (only the surface of the PS plate 12 is treated). Washing water) can be retained for a long time. On the other hand, the washing water obtained by washing the back surface of the PS plate 12 by the pumping of the lower conveying roller 52 is returned to the receiving tray 62 after the treatment. Can be drained.

As shown in FIG. 5, a cleaning member 72 is placed on the bottom of the tray 62. The cleaning member 72 is formed by attaching a sponge (made of polypropylene) 76 on a stainless steel base 74. As the sponge 76, for example,
Hayashi Felt Opcell LC-300 is applicable. The sponge 76 has a thickness of 5 mm in a free state.
The contact surface with the transport roller 52 is pushed in an arc shape, and the receiving tray 6 is pushed in a state where the maximum pushing amount is 2 mm.
2 housed.

The sponge 76 has a function of wiping the surface of the lower transport roller 52 in accordance with the rotation of the transport roller 52. In other words, the developing scum and the like adhered by the water washing process on the back surface side of the PS plate 12 are wiped off. For this reason, the lower transport roller 52, which cannot be easily cleaned by wiping or the like by removing the lid (not shown) of the casing 14 like the upper transport roller 52, is performed during processing. .

The cleaning member 72 includes a tray 62
, And can be periodically replaced with a new cleaning member 72.

As shown in FIG. 2, the finisher 2
Above the gum solution tank 30 of No. 6, a pair of transport rollers 78 is provided. A guide roller 80, which is a skew roller, is disposed below the conveyance path between the conveyance roller 78 and the conveyance roller 52. The PS plate 12 nipped and delivered by the transport rollers 52 is guided to the transport rollers 78 by the guide rollers 80.

The guide roller 80 and the transport roller 78
A spray pipe 82 is disposed above the transport path. Like the spray pipe 56, these spray pipes 82 are also provided with discharge ports (not shown) communicating with the inside on the outer periphery.

At a part of the outer periphery of the upper conveying roller 78,
The tip of the flexible blade 84 is in sliding contact.
When the gum liquid from the spray pipe 82 is dropped near the boundary between the blade 84 and the upper conveying roller 78, the gum liquid stored in the V-shaped portion formed by the blade 84 and the conveying roller 78 is removed at both ends in the width direction. And the thickness is measured by the blade 84 together with the rotation of the gum solution conveying roller 78 on the surface of the upper conveying roller. The liquid film of the gum liquid is transferred continuously over the entire area in the width direction when the transport roller 78 comes into contact with the PS plate 12. Therefore, the PS plate 12 can be prepared with a small amount of gum solution.
Can be subjected to a gum solution application treatment.

The transport roller 78 sandwiches and transports the PS plate 12 and squeezes the gum solution adhering to the surface of the PS plate 12. The gum solution squeezed from the surface of the PS plate 12 falls from both sides of the PS plate 12 or from the last end of the PS plate and is collected in the gum solution tank 30.

Further, below the lower conveying roller 78,
A receiving tray 86 is provided, and a part of the gum solution squeezed by the transport roller 78 falls and is stored therein. A part of the lower transport roller 78 is immersed in the gum solution stored in the tray 86, and the lower transport roller 78 is
The coating process is performed by pumping the gum solution from the receiving tray 86. Thus, even if the conveying roller 78 pumps up the gum solution to desensitize the back surface of the PS plate 12 and stops the discharge from the spray pipe 82 when the PS plate 12 is not passing, the upper conveying roller 78 Of the processing liquid is not deposited on the surface of the transport roller 78. The blade 84
May contact the surface of the PS plate 12.

As shown in FIG. 2, the spray pipe 82
Is connected to one end of a pipe 88, and the other end of the pipe 88 reaches a gum solution replenishing tank 68 via a pump 66. Fresh gum solution is stored in the gum solution replenishing tank 68, and an appropriate amount of gum solution can be dropped from the discharge port of the spray pipe 82 by appropriately operating the pump 66. In this embodiment, the discharge capacity of the pump 66 is 33 cc / m ² .

The operation of this embodiment will be described below. PS plate 12 on which an image is recorded by a printing device (not shown) or the like
Is the developing unit 2 of the PS plate processor 10 from the insertion table 16.
Inserted into 2. PS version processor 10 is PS version 12
Is inserted into the developing tank 18 by the transport roller 32.

The PS plate 12 is sent out by a conveying roller 32 at an angle of 15 ° downward with respect to the horizontal, and is conveyed in the developing tank 18 by a guide roller 34 and the like. On this occasion,
The PS plate 12 is conveyed while being sprayed with a developing solution by spray pipes 44, 46, 48, and is subjected to a developing process.

A relatively fresh developing solution discharged from the spray pipes 44, 46, 48 in the solution in the developing tank 18 is used as PS.
As the development of the printing plate 12 progresses, waste products eluted in the vicinity of the photosensitive layer side are blown off to promote development. Further, the developer discharged from the spray pipes 44, 46, 48 is supplied to the surface of the PS plate 12 from which waste matter has been removed by the squeezing roller 42, so that the development of the PS plate 12 can be further promoted. it can. Thereafter, the photosensitive layer side surface of the PS plate 12 is rubbed with a rotating brush 38 to promote development,
The photosensitive layer in the non-image area is removed.

The developed PS plate 12 is washed with a water washing unit 24.
Is transported by the transport roller 52 to be nipped and transported. At this time, the PS plate 12 is washed with washing water discharged from the spray pipe 56. The processing in the water washing section 24 will be described later.

When the rinsing process is completed, the PS plate 12 is guided by the transport rollers 52 to be sent to the finisher 26, and is nipped and transported by the transport rollers 78. here,
The gum solution discharged from the spray pipe 82 undergoes desensitization processing. The PS plate 12 discharged from the finisher unit 26 is dried in the drying unit 31 and discharged from the PS plate processor 10 to complete the processing.

In the finisher section 26, the blade 84 is in contact with the peripheral surface of the upper conveying roller 78, and the gum solution discharged from the spray pipe 82 is stored between the blade 84 and the upper conveying roller 78. And PS
The liquid film spreads to both ends in the width direction of the printing plate 12, and a liquid film is formed on the surface thereof with the rotation of the transport roller 78, and is transferred to the surface of the PS plate. Therefore, the desensitizing treatment of the surface of the PS plate 12 can be reliably performed. Further, the lower surface of the PS plate 12 processes the gum solution stored in the tray 86 by being pumped up by the lower conveying roller 78, so that the desensitizing process of the back surface of the PS plate 12 is also performed without fail.

Here, the rinsing process in the rinsing section 24 will be described in detail.
The tip of the blade 60 is in contact with the surface of the S plate 12. For this reason, the receiving portion of the washing water discharged from the spray pipe 56 is formed by the blade 60, the surface of the PS plate 12, and the upper conveying roller 52.

Therefore, even if the amount of the washing water is small, the washing water can be stored.
The discharge amount of washing water from 6 can be extremely small. In this embodiment, three discharge ports 58 are formed in the spray pipe 56 to supply a small amount of washing water (about 33 cc / m ² ).

The washing water stored in the receiving part is the PS plate 12
As a result, a liquid film is formed on the surface of the PS plate 12, and the surface can be reliably cleaned. Further, since the backflow of the washing water is prevented by the blade 60, there is no outflow into the developing unit.

The washing water that has reached both ends in the width direction of the PS plate 12 falls from the surface and reaches the receiving tray 62. It flows into the receiving tray 62 from both ends in the longitudinal direction.

On the other hand, since the notch 70 is formed in the center of the tray 62 in the longitudinal direction (the position farthest from the position where it falls from the surface of the PS plate 12), the water washing that falls from the surface of the PS plate 12 is performed. The flush water overflowed by the water flows out of the notch 70 first.

The notch 70 is provided so that the surface of the PS plate 12 is rinsed with water, and then the receiving water is dropped from both ends thereof.
Since the liquid flow on the path farthest in 62, a relatively fresh washing water not flow out, will be the washing water which has been stored up to now is discharged, the washing water in the pan 62 of fatigue increases Never.

The lower transport roller 52 immersed in the receiving tray 62 draws up the washing water in the receiving tray 60 by rotation, and cleans the back side of the PS plate 12. here,
Since the washing water in the receiving tray 62 is relatively fresh as the washing water, the back surface side is appropriately washed. The washing water treated on the back side is returned to the receiving pan 62 again. However, since the washing water having a relatively high degree of fatigue flows out of the notch 70 quickly, while maintaining the liquid amount in the receiving pan 62, In addition, relatively fresh washing water can be stored.

Since the cleaning member 72 is provided at the bottom of the receiving tray 62, the lower transport roller 5
In response to the rotation of 2, the sponge 76 rubs the peripheral surface of the lower transport roller 52, and can wipe off dirt such as development residue. That is, the lower transport roller 52
Can be cleaned, the upper transport roller 52
The trouble of removing and cleaning is eliminated. Since the cleaning member 72 is removable, it can be replaced periodically.

It should be noted that there is no problem with the cleaning of the upper transport roller 52 since the lid of the casing 14 is removed and the operator can reach it. Of course, the upper transport roller
A cleaning member may be disposed in the same manner as in the lower side.
No.

As described above, in this embodiment, the blade 60,
Since the receiving portion of the washing water is formed by the surface of the PS plate 12 and the upper conveying roller 52, a small amount of the washing water can be efficiently stored and a liquid film can be formed on the surface. It can be extremely small. For this reason, the capacity of a tank or the like for storing washing water can be reduced, and the entire apparatus can be downsized.

Further, the washing water in the receiving tray 62 for processing on the back side of the PS plate 12 can store relatively fresh washing water (washing water obtained by treating only the surface of the PS plate 12). A spray pipe or the like corresponding to the back surface of the plate 12 is not required without reducing the processing capacity on the back surface side of the plate 12. Therefore, the number of parts can be reduced, and assembling workability is also improved.

Further, since the cleaning member 72 is provided in the receiving tray 62, the lower transport roller 52 can be cleaned during the processing, thereby improving the maintainability.

In this embodiment, the notch 70 is provided in the tray 62 of the rinsing section 28 to improve the circulation of the rinsing water. However, the same configuration can be applied to the tray 86 of the finisher section 26. The same effect can be obtained.

In the present embodiment, the cleaning member 72 is disposed at the bottom of the tray 62. However, if the cleaning member 72 is disposed on the side surface of the tray 62, the replacement work becomes easier.

As shown in FIG. 7, one end of the base 94 is bent in a substantially U-shape to provide elasticity, and a thin felt 96 is attached to this end, and the felt 96 is moved downward by elastic force. Of the transport roller 52 may be pressed. The felt 96 is made of Toray Industries G
S felt (thickness 3 mm) is applicable.

[0079]

As described above, the sheet material processing apparatus according to the present invention has an excellent effect that the consumption of the processing liquid can be reduced without impairing the processing performance.

Further, in addition to the above effects, there is an effect that the number of parts can be reduced without impairing the processing performance on the back side of the sheet material.

Further, in addition to the above effects, there is an effect that the maintainability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a PS plate processor according to an embodiment.

FIG. 2 is a schematic configuration diagram of a PS plate processor according to the embodiment.

FIG. 3 is a perspective view illustrating a configuration of a water washing unit.

FIG. 4 is a front view of the washing section as viewed from an upstream side in a PS plate transport direction.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a perspective view of a receiving tray.

FIG. 7 is a sectional view corresponding to FIG. 5 and showing a modification of the cleaning member.

[Explanation of symbols]

 Reference Signs List 10 PS plate processor 12 PS plate 52 Transport roller 56 Spray pipe 60 Blade 62 Receiving tray 70 Notch (outflow part) 72 Cleaning member

Claims (3)

(57) [Claims] 1. A sheet material processing apparatus for squeezing and processing excess processing liquid while nipping and transporting a sheet material between a pair of rollers, wherein a spray unit for dropping the processing liquid on an upstream side of the pair of rollers. When the blade tip is provided on the upstream side of the pair of rollers prevents backflow to the upstream side are arranged such that on movement locus of the treating solution dripped from the spray portion of the sheet material, wherein A pair of rollers
Part of the lower roller of the sheet material conveyance path
Dipping and dropping from the width direction end of sheet material
A tray for receiving and storing the liquid, and a vertical wall of the tray.
Or at the center of the sheet material width direction near the
A sheet material processing apparatus , comprising: an outflow portion that flows out excess processing liquid . 2. A sheet material while nipping conveying the sheet material with the pair of rollers, processed squeezing excess treatment liquid
In the processing apparatus , a spray unit for dropping a processing liquid on an upstream side of the pair of rollers, and a tip portion provided on an upstream side of the pair of rollers such that a tip portion contacts a surface of an upper roller of the pair of rollers. A blade for storing the processing liquid dropped from the spray unit, and a part of a lower roller of the sheet material conveying path among the pair of rollers is immersed and a width direction end of the sheet material. A sheet material processing apparatus comprising: a receiving tray for receiving and storing a processing liquid dropped from the tray; and an outflow portion for discharging excess processing liquid in the receiving tray to a vertical wall of the receiving tray or a central portion in the width direction of the sheet material near the receiving tray. 3. The lower row accommodated in the tray.
A cleaning member that comes into contact with the peripheral surface of the laser;
The sheet material processing apparatus according to claim 1 or 2, wherein: