JP2002102806A - Metal tool for adjusting brush pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal tool for easily adjustable a brush pressure. SOLUTION: An adjustment metal tool 140 is attached to a head part 138 of an adjustment bolt 128 projected out of a horizontal part 124 of a side plate 104. The adjustment metal tool comprises a horizontal part 144 and a box part 142 having a box hole 146 therein and is so formed as to make the rotating movement of an adjustment bolt possible by fitting the head part of the adjustment bolt in the box hole while keeping the horizontal part 144 facing upward. Also, a stopper part is brought into contact with the side wall by fitting the head part of the stopper part in the box hole while keeping the stopper part facing downward and on the opposite to the inner face of the side plate. Consequently, the rotation of the box part and the adjustment bolt as well are regulated to prevent loosening of the adjustment bolt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush used for rotating a brush pressure adjusting bolt provided for adjusting the contact pressure of a brush roller with a photosensitive material when brushing the surface of the photosensitive material with a brush roller. The present invention relates to a pressure adjusting bracket.

[0002]

2. Description of the Related Art A photosensitive lithographic printing plate processing apparatus (hereinafter, referred to as a "PS plate processor") for processing, for example, a photosensitive lithographic printing plate (hereinafter, referred to as a "PS plate") as a photosensitive material includes a PS plate on which an image is recorded. Is transported in the developing tank while being immersed in a developing solution stored in the developing tank to perform a developing process.
At this time, the PS plate processor brushes the surface of the PS plate with a brush roller to remove an unnecessary photosensitive layer (for example, a photosensitive layer of a non-image portion) from the surface of the PS plate.
There is something that removes.

In such a brush roller, a backup roller and the like are arranged to face each other with a PS plate conveyance path interposed therebetween.
The surface of the PS plate is brushed by rotating while nipping the PS plate with the backup roller.

In order to reliably remove the photosensitive layer of the PS plate, it is necessary to apply an appropriate nip pressure (brush pressure) between the brush roller and the backup roller.
The brush pressure needs to be adjusted periodically or at a predetermined timing based on the finish of the PS plate, due to wear of the hair tips, displacement, etc. due to fatigue over time.

[0005] There is a structure in which such adjustment of the brush pressure is performed by rotating an adjustment bolt provided on at least one of a brush roller and a bearing of a backup roller which are supported by a side plate. . That is, the lower bearing is fixed, and the upper bearing is pressed against the lower bearing by the adjustment bolt, thereby applying a nip force between the brush roller and the backup roller.
At this time, there is a type in which the brush pressure at the time of holding the PS plate can be changed by changing the pushing amount of the adjustment bolt.

[0006]

However, such an adjustment bolt needs to be provided with a lock, and when adjusting the brush pressure, after removing the lock,
It is necessary to rotate the adjustment bolt using a predetermined tool, and after the adjustment of the brush pressure is completed, it is necessary to stop the adjustment bolt again. Furthermore, when adjusting the brush pressure, it is necessary to repeat the adjustment and test to set the optimum brush pressure, which is a complicated operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and proposes a brush pressure adjusting bracket for improving work efficiency when adjusting a brush pressure on a photosensitive material of a brush roller for brushing the surface of the photosensitive material. The purpose is to do.

[0008]

In order to achieve the above object, the present invention provides a brush roller provided for adjusting the brush pressure on a brush roller which is supported by a pair of side plates and brushes the surface of a photosensitive material. A brush pressure adjusting bracket for rotating a pressure adjusting bolt, the engaging portion being engaged with a head of the brush pressure adjusting bolt so as to be integrally rotatable, and being engaged with a head of the brush pressure adjusting bolt. By allowing the engaging portion to rotate integrally with the head, the engaging portion abuts on a side plate supporting the brush roller in a state where the engaging portion is engaged with the head of the brush pressure adjusting bolt. A stopper provided with the engaging portion extending so as to prevent the engaging portion from rotating integrally with the head.

According to the present invention, the brush pressure on the photosensitive material can be adjusted by rotating the adjustment bolt by engaging the engagement portion with the adjustment bolt. The stopper portion abuts on the side plate in a state where the engagement portion is engaged with the head of the adjustment bolt, and prevents the rotation of the engagement portion. That is, the screw serves both as a screwdriver for the adjustment bolt and as a locking device.

As described above, it is possible to improve the workability by integrating the engaging portion and the stopper portion.

The invention according to claim 2 is characterized in that the engaging portion and the stopper portion are connected in a substantially L-shape.

According to a third aspect of the present invention, when the side plate is provided with a mounting portion for the adjustment bolt with a predetermined width, the stopper portion extends from the engaging portion so as to sandwich the mounting portion. It is characterized by being provided.

According to the present invention, the stopper portion can be used as a locking device by turning the stopper portion to the side facing the side plate by forming the stopper portion into a substantially L-shape or a substantially U-shape.
By directing the stopper portion away from the side plate, it can be used for adjusting the brush pressure.

Further, the invention according to claim 4 is characterized in that there is provided an urging means for urging the stopper in a direction away from the side plate.

According to the present invention, when the stopper is opposed to the side plate, the stopper is urged in a direction away from the side plate, so that the adjustment bolt is surely rotated together with the engagement portion. Can be prevented.

According to a fifth aspect of the present invention, when the brush pressure adjusting bolt is a hexagonal bolt, a polygonal engaging hole into which the head of the hexagonal bolt is inserted is formed in the engaging portion. It is characterized by.

According to the present invention, the engagement portion is formed in a glasses wrench shape. This makes it possible to fix the adjustment bolt at any position.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a photosensitive lithographic printing plate processing apparatus (hereinafter referred to as “P”) applied as an example of a photosensitive material processing apparatus.
S-version processor 10). In the present embodiment, a photosensitive lithographic printing plate (hereinafter, referred to as “PS plate 12”) such as a photopolymer plate which is image-exposed by an exposure device (not shown) is used as a photosensitive material.
The PS plate processor 10 performs development processing of the PS plate 12. The PS plate 12 has a photosensitive layer formed on a thin rectangular flat plate such as an aluminum plate as a support, and the photopolymer plate has an optical bonding layer, a photopolymerization layer, and an overcoat layer stacked thereon. The photosensitive layer is formed,
Exposure of the image by the laser light promotes the polymerization reaction of the image portion of the photopolymerizable layer.

The PS plate processor 10 includes a developing unit 14 for treating the PS plate 12 with a developing solution, a washing unit 16 for supplying and washing the PS plate 12 treated with the developing solution with washing water, A desensitizing unit 18 for applying a gum solution to the PS plate 12 to desensitize the PS plate 12;
And a drying unit 20 for drying the water.

In the PS plate processor 10, a processing tank 22 is provided. In the processing tank 22, a developing tank 24 is formed at a position to be the developing section 14, and the washing section 1 is formed.
A washing tank 26 and a desensitizing processing tank 28 are formed as processing tanks at positions that are to be 6 and the desensitizing processing section 18.

A slit-shaped insertion port 32 is formed in the outer panel 30 covering the processing tank 22 so that the processing tank 2
2, a discharge port 34 is formed on the drying unit 20 side.
The cover 36 that covers the processing tank 22 includes a developing unit 1.
A re-entry insertion port (sub-insertion port) 38 for inserting the PS plate 12 is provided between the washing unit 4 and the washing unit 16. The reentry insertion port 38 is an insertion port for the PS plate 12 for performing processing in the PS plate processor 10 except for processing in the developing unit 14.

An insertion table 40 is provided outside the insertion port 32, and a rubber conveying roller pair 42 is disposed on the side of the developing unit 14 where the PS plate 12 is inserted. The PS plate 12 on which the image has been printed is placed on the insertion table 40 and inserted from the insertion port 32 along the direction of arrow A, and the conveying roller pair 42 is inserted.
Sent between.

The conveying roller pair 42 is rotated by a driving force of a driving unit (not shown) to draw in the inserted PS plate 12 and to the developing unit 14 at an angle of about 15 ° to 31 ° with respect to the horizontal direction. Send in. In this embodiment, a single-sided PS plate 12 having a photosensitive layer formed on one surface of the support is used. The PS plate 12 is inserted from the insertion port 32 with the photosensitive layer facing upward. It is inserted into the PS version processor 10.

The developing tank 2 formed in the processing tank 22
Numeral 4 has a substantially mountain shape with a bottom center protruding downward, and stores a developing solution for performing a developing process of the PS plate 12. In the developing tank 24, a guide plate 44 is provided along the bottom on the lower side along the transport direction of the PS plate 12.

The guide plate 44 is provided upstream of the developing tank 24 (on the side of the insertion port 32), and has a plurality of freely rotating rollers (small rollers) 46 attached thereto. PS plate 1 sent into developing unit 14 by conveying roller pair 42
2 is a guide plate 4 guided by the rollers 46.
4 is conveyed.

In the developing tank 24, a pair of conveying rollers 48 whose outer periphery is made of rubber are arranged on the washing section 16 side.
The PS plate 12 guided and transported in a substantially U-shape in the inside 4 is nipped by the transport roller pair 48 and pulled out from the developing tank 24. The PS plate 12 is immersed in the developing solution when transported in the developing tank 24 in this manner, and unnecessary portions of the photosensitive layer exposed by image exposure swell with the developing solution,
The photosensitive layer is peeled off from the support, and an unnecessary photosensitive layer is removed according to the exposed image.

A spray pipe 50 is provided in the developing tank 24, and a developing solution in the developing tank 24 sucked by a pump (not shown) is supplied to the spray pipe 50.
Spraying on the photosensitive layer surface of the PS plate 12
Is supplied to the surface of the developing tank 24 and the developing solution in the developing tank 24 is circulated.

The developing unit 14 is provided with a liquid surface cover 52 such that the lower surface thereof is lower than the liquid surface of the developer stored in the developing tank 24. Also, the wall surface of the developing tank 24 and the liquid surface cover 5
In 2, the shield members 54A and 54B are provided on the insertion port 32 side, and the shield members 54C and 54D are attached on the washing section 24 side. The processing tank 22 is provided with shielding members 54E and 54F around the discharge port 34,
A shielding member 54G is attached to the reentry insertion slot 38.

The shielding members 54A to 54G are made of silicon rubber or the like. The inside of the developing tank 24 has a liquid surface in a space in a sealed portion formed by the shielding members 54A to 54G, the pair of conveying rollers 42 and 48, and the like. A large-capacity liquid level cover 52 is provided to contact with the liquid level cover 52 to reduce the amount of air trapped in this space.
This prevents fresh air from entering near the liquid surface of the developing solution, and suppresses deterioration of the developing solution and evaporation of water due to carbon dioxide gas in the air. The liquid level lid 52 is provided with skewer rollers 52A and 52B on the lower surfaces of the upstream and downstream ends of the PS plate 12 in the transport direction, and the PS plate 12 transported in the developing unit 14 is provided with the liquid level lid. The surface (mainly the photosensitive surface) is prevented from being damaged due to contact with the lower surface of 52.

The PS plate 12 pulled out from the developing tank 24 by the pair of transport rollers 48 is sent to the washing section 16 while the developer adhering to the surface is narrowed down by the pair of transport rollers 48.

In the rinsing section 16, a transport path for transporting the PS plate 12 in a substantially horizontal state by a pair of transport rollers 58 and 60 disposed above the rinsing tank 26 is formed.
2 is sandwiched between the conveying roller pairs 58 and 60 and
Is transported horizontally above the

The washing section 16 includes a pair of conveying rollers 58 and 60.
Spray pipes 62A and 62B are provided in pairs between the upper and lower sides of the PS plate 12 conveyance path. The spray pipes 62 </ b> A and 62 </ b> B are arranged so that the axial direction is along the width direction of the PS plate 12 (direction orthogonal to the transport direction), and a plurality of discharge holes are formed facing the transport path of the PS plate 12.

The washing tank 26 stores washing water as a processing liquid. One end of a pipe 82 is opened at the bottom of the washing tank 26. Spray pipes 62A and 62B are connected to the pipe 82 via a liquid supply pump (not shown) (not shown). Spray pipes 62A, 62B
Then, the washing water supplied by operating the liquid supply pump in synchronization with the transport of the PS plate 12 is supplied from the discharge hole to the PS plate 1.
Spout toward 2. The PS plate 12 is used to wash away the developer adhering to the surface by the washing water.

The developing solution washed away by the washing water falls into the washing tank 26 together with the washing water. In addition,
The new washing water is supplied to the washing tank 26 by means (not shown) according to the processing amount of the PS plate 12.

The washing water supplied to the PS plate 12 is sent out while the PS plate 12 is sandwiched by the pair of transport rollers 60 and sent out, together with the developer adhering to the front and back surfaces of the PS plate 12. And is collected in the washing tank 26. The spraying direction of the washing water from the spray pipes 62A and 62B is such that the spray pipe 62A is on the downstream side in the transport direction of the PS plate 12 and the spray pipe 62B is
Although the transport direction of the plate 12 is set to the upstream side, the present invention is not limited to this, and may be another direction.

The desensitizing section 18 is provided with a pair of conveying rollers 56 above the desensitizing tank 28,
Is desensitized by the conveying roller pair 56.
After being conveyed through the inside, it is sent out from the discharge port 34.

The desensitizing section 18 is provided with a spray pipe 64 above the PS plate 12 transport path.
The spray pipe 64 has an axial direction arranged along the width direction of the PS plate 12, and has a plurality of discharge holes opposed to the transport path of the PS plate 12. In addition, the desensitization processing unit 18
A discharge unit 66 having a continuous slit formed in the width direction of the PS plate 12 is provided below the transport path of the PS plate 12.

A gum solution used for protecting the plate surface of the PS plate 12 is stored in the desensitizing tank 28. The gum solution is sprayed by a pump (not shown) which operates in synchronization with the transport of the PS plate 12. And supplied to the discharge unit 66. The spray pipe 64 drops the gum solution toward the PS plate 12 and spreads and applies the solution on the surface of the PS plate 12. Further, the discharge unit 66 applies the gum solution discharged from the slit to the entire back surface of the PS plate 12 when the back surface of the PS plate 12 passes while contacting the slit portion.

The PS plate 12 has a protective film formed by the gum solution applied to the front and back surfaces. The spray pipe 6
The discharge direction of the gum solution from 4 is not limited to the downstream side in the transport direction of the PS plate 12, but may be another direction. Further, although the discharge unit 66 is provided below the transport path of the PS plate 12 to apply the gum solution, the invention is not limited to this, and a spray pipe may be provided to apply the gum solution.

The PS plate 12 to which the gum solution has been applied in the desensitizing unit 18 is sandwiched between the pair of transport rollers 56 and discharged from the outlet 34 with a slight amount of gum solution remaining on the front and back surfaces.
It is sent to the drying unit 20.

The drying section 20 has a PS near the discharge port 34.
A support roller 68 for supporting the plate 12 is provided, and the drying unit 2
0, a transport roller pair 72 and a transport roller pair 74 are disposed near the center of the transport path of the PS plate 12 and near the discharge port 70. The PS plate 12 includes a support roller 68 and a transport roller pair 72, 74. Is transported in the drying unit 20.

Ducts 76A, 7 are provided between the support roller 68 and the transport roller pair 72 and between the transport roller pair 72 and the transport roller pair 74 with the transport path of the PS plate 12 therebetween.
6B is provided. The ducts 76A and 76B are disposed such that the longitudinal direction is along the width direction of the PS plate 12,
A slit hole 78 is provided on a surface of the S plate 12 facing the conveyance path.

When the drying air generated by the drying air generating means (not shown) is supplied from one end in the longitudinal direction, the drying air is directed from the slit holes 78 to the conveying path of the PS plate 12. And spray it onto the PS plate 12. Thereby, in the PS plate 12, the gum solution applied to the front and back surfaces is dried, and a protective film is formed. The outlet 34 has a processor unit up to the desensitizing unit 18 for treating the PS plate 12 with the processing liquid and the drying unit 2.
A shutter (not shown) is provided to separate the air from zero, and the discharge port 34 is unnecessarily opened to prevent the heated air in the drying unit 20 from entering the desensitization processing unit 18.

Incidentally, the guide plate 4 is provided in the developing tank 24.
4 and a position between the guide plate 44 and the conveying roller pair 48, the brush roller 80 (80
A, 80B). The brush roller 80A opposed to the guide plate 44 rotates while pinching the PS plate 12 between the roller 46 of the guide plate 44 and the brush roller 80A.
The surface (upper surface side) of the S plate 12 is brushed.

The PS plate 12 conveyed while being immersed in the developing solution in the developing tank 24 is rotated while the bristle material of the brush roller 80 is in contact with a predetermined pressure (brush pressure). Unnecessary photosensitive layers and the like are removed.

At this time, the roller 46 of the guide plate 44 functions as a backup roller and the roller 46A
When the S plate 12 is sandwiched, a predetermined brush pressure is generated on the brush roller 80A.

A roller 90 as a backup roller is disposed opposite the brush roller 80B on the downstream side of the guide plate 44.
A nip force is applied so that a predetermined brush pressure is generated when the plate 12 is held.

Here, a mechanism for adjusting the brush pressure will be described. The mechanism for adjusting the brush pressure between the brush roller 80A and the roller 46 and between the brush roller 80B and the roller 90 is basically the same. Hereinafter, the brush roller 80A will be referred to as the brush roller 80. The description of the adjustment of the brush pressure by the brush roller 80B will be omitted.

As shown in FIGS. 2 to 4, side plates 104 (in FIGS. 2 to 4,
The brush roller 80 and the guide plate 44 are provided between only one of them (shown). The brush roller 80 has a rotating shaft 1
00 is supported by a pair of side plates 104 via a bearing 106.

The bearing 106 is made of synthetic resin in which a cylindrical support portion 108 for supporting the rotating shaft 100 and a flange portion 110 for abutting against the side plate 104 to determine the axial position are integrally formed. ing.

The guide plate 44 is fixed at a predetermined position on the side plate 104, and is mounted between the pair of side plates 104 such that a part thereof faces the brush roller 80. The guide plate 44 can be attached to the side plate 104 by any method, and a detailed description is omitted in the present embodiment.

The guide plate 44 has a brush roller 80
, A large number of rollers 46 are provided. Roller 4
6 is a small roller having a rotating shaft 46A at both ends,
The attachment of the roller 46 to the guide plate 44 is performed, for example, as shown in FIG.
As shown in FIG. 3, a substantially rectangular mounting hole 102 is formed at a predetermined position on the upper surface of the guide plate 44, and the mounting hole 102
By inserting the roller 46, the rotation shaft 46A of the roller 46 is fitted into a predetermined position of the guide plate 44, and the roller 46 is rotatably supported.

As shown in FIGS. 2 to 4, the rollers 46
The brush rollers 80 are provided at predetermined intervals along the axial direction. Further, the roller 46 facing the brush roller 80
Are arranged in a zigzag pattern. That is, the roller 46 is
The PS plates 12 are arranged alternately on the upstream side and the downstream side in the transport direction of the PS plate 12 with the axis of the brush roller 80 interposed therebetween (see FIG. 2).

When each roller 46 is attached to the guide plate 44, a part of the outer peripheral portion projects from the surface of the guide plate 44 on the brush roller 80 side. As a result, the PS plate 12 (not shown in FIGS. 2 to 4) is supported while being in contact with the outer peripheral portion of the roller 46, and the guide plate 4
4 is guided and conveyed along a guide plate 44.

On the other hand, the brush roller 80
An elongated hole 116 is formed at a position facing the bearing 106 that supports the shaft 106. The support portion 108 is inserted into the elongated hole 116, and the flange portion 110 is abutted against the inner surface of the side plate 104. ing.

The elongated hole 116 is formed so that its longitudinal direction is substantially along the vertical direction. With this, the bearing 106 is provided on the guide plate 44 in a state in which movement in the axial direction together with the brush roller 80 is restricted. It is movable in the elongated hole 116 along the direction of contact with and separation from the existing roller 46.

An adjusting plate 118 is provided on the side plate 104 so as to face the bearing 106 in which the rotating shaft 100 of the brush roller 80 is inserted. This adjustment plate 11
8 has a longitudinal direction substantially along the vertical direction, a circular hole 120 is formed at the lower end portion, and the support portion 108 of the bearing 106 protruding from the long hole 116 of the side plate 104 is inserted into the circular hole 120. Have been.

The adjusting plate 118 has a horizontal portion 122 formed by bending an upwardly extending distal end substantially at a right angle. In addition, the adjustment plate 11 is attached to the side plate 104.
8, a horizontal portion 124 bent outward at a substantially right angle is formed at an upper end portion, and the horizontal portion 122 of the adjustment plate 118 is connected to the horizontal portion 1 of the side plate 104.
24 are arranged substantially in parallel.

The horizontal portion 124 of the side plate 104 is provided with a circular hole 126 (see FIGS. 3 and 4) at a predetermined position.
An adjusting bolt 128 is inserted into the circular hole 126 from above.

The horizontal portion 122 of the adjustment plate 118
A bolt hole 130 in which a female screw is engraved is formed,
The bolt portion 132 of the adjustment bolt 128 is
It is screwed to 0. A lock nut 134 is screwed into the tip of a bolt 132 protruding downward from the horizontal portion 122 of the adjustment plate 118 to prevent the adjustment plate 118 from being detached from the adjustment bolt 128.

Thus, the brush roller 80 and the adjustment plate 118 are supported by the adjustment bolt 128 in a suspended state. As shown in FIGS. 3 and 4, the horizontal portion 124 of the side plate 104 is provided with a stopper 136 on the lower surface side.
8 is prevented from moving up and down.

Here, the adjustment plate 118 is
Rotation of the adjustment bolt 128 causes the position of the bolt hole 130 with respect to the bolt portion 132 to be substantially in the vertical direction because the support portion 108 of the bearing 106 is inserted into the shaft 0 and rotation of the adjustment bolt 128 is prevented. Go to As the adjustment plate 118 moves, the brush roller 80 moves together with the bearing 106 supported by the adjustment plate 118 in the direction in which the guide plate 44 contacts and separates from the roller 46, which is the longitudinal direction of the elongated hole 116. Has become.

That is, by raising the adjustment plate 218 by rotating the adjustment bolt 128,
The brush roller 80 moves in a direction away from the roller 46,
The brush pressure on the PS plate 12 when the PS plate 12 is sandwiched between the brush roller 80 and the roller 46 is reduced, and the brush pressure on the PS plate 12 is increased by pushing down the adjustment plate 218.

On the other hand, an adjusting bracket 140 is mounted on the head 138 of the adjusting bolt 128. Adjustment bracket 140
Is substantially L by the box portion 142 and the stopper portion 144.
It is formed in a character shape. Further, a box hole 146 serving as an engagement hole is formed in the box portion 142 serving as an engagement portion.

As shown in FIG. 4, the position of the box hole 146 is such that when the stopper 144 is directed downward and the stopper 144 contacts the inner surface of the side plate 104 (the surface on the roller 90 side), The axis of the hole 146 is located at a position substantially coincident with the axis of the adjustment bolt 128.

As shown in FIG. 2 to FIG.
Reference numeral 46 is large enough to receive the head 138 of the adjustment bolt 128. As shown in FIG. 2, a predetermined number of peaks 148 are formed at equal intervals on the inner surface of the box hole 146.

The peak 146 has, for example, six or twelve peaks. When the head 138 of the adjustment bolt 128 is inserted into the box hole 146, the peak 148 becomes the head 138.
Abut on the sides. As a result, the head 138 and the box 142 are engaged so as to rotate integrally. That is,
The box part 142 has a function of an eyeglass wrench.

As a result, as shown in FIGS. 2 and 3,
The box hole 146 of the box portion 142 is held in a state where the stopper portion 144 faces upward so as not to face the side plate 104.
When the box portion 142 (adjustment fitting 140) is rotated by fitting the head 138 of the adjustment bolt 128 into the adjustment bolt 128, the adjustment bolt 128 can be rotated.

Further, as shown in FIG.
4 is directed downward so as to face the side plate 104,
The adjusting bolt 12 is inserted into the box hole 146 of the box portion 142.
8 by fitting the head 138 thereof into the stopper portion 14.
4 is in contact with the inner surface of the side plate 104, and the rotation of the box portion 142 is prevented. Thereby, rotation of the head 138 of the adjustment bolt 128 fitted in the box hole 146 of the box portion 142 can be prevented.

That is, the adjustment fitting 140 functions as a loosening stopper for preventing the rotation of the adjustment bolt 128.

In the PS plate processor 10 configured as described above, the PS plate 12 on which an image is recorded by a printing device (not shown) or the like is placed on the insertion table 40, and the insertion port 3
2, the PS plate 12 is pulled in by the conveying roller pair 42 and sent to the developing unit 14. In the PS plate processor 10, the PS plate 1 passing through the insertion slot 32 is used.
When 2 is detected by a sensor (not shown), a timer is started. The timer measures the timing of discharging the washing water from the spray pipes 62A and 62B of the washing unit 16 and the timing of discharging the gum solution in the desensitizing unit 18 together with the operation of the driving unit for transporting the PS plate 12. Used for

In the developing section 14, the PS plate 12 is fed by the pair of conveying rollers 42 at an insertion angle of 15 ° to 31 ° with respect to the horizontal direction, and is conveyed while being immersed in the developing solution. The PS plate 12 is sent out of the developer at a discharge angle in the range of 17 ° to 31 °. PS version 12
By being immersed in a developing solution in the developing unit 14, unnecessary portions of the photosensitive layer swell according to the exposed image, and the swollen photosensitive layer is removed from the support. At this time, by brushing the surface of the PS plate 12 with a brush roller 80 disposed in the developing tank 24, removal of an unnecessary photosensitive layer from the surface of the PS plate 12 is promoted.

The PS plate 12 thus processed with the developing solution and sent out of the developing solution is drawn out by the transport roller pair 48 and sent to the washing section 16. At this time, the transport roller pair 48 squeezes the developer adhering to the front and back surfaces of the PS plate 12 from the PS plate 12.

In the rinsing section 16, rinsing water is jetted from the spray pipes 62A and 62B while the PS plate 12 is conveyed in a substantially horizontal state while being sandwiched by the conveying roller pairs 58 and 60. The transport roller pair 60 disposed downstream in the transport direction of the PS plate 12 squeezes the washing water supplied to the front and back surfaces of the PS plate 12 together with the developer remaining without being squeezed by the transport roller pair 48. While dropping, this PS version 1
2 is sent to the desensitizing unit 18.

As a result, when the PS plate 12 passes through the water washing section 16, the developer remaining on the front and back surfaces is washed away.

The PS plate 12 sent to the desensitizing unit 18
Is passed between the spray pipe 64 and the discharge unit 66, and is pinched by the pair of transport rollers 56, so as to be sent out of the desensitizing unit 18 by the pair of transport rollers 56.

At this time, in the desensitizing unit 18, the gum solution is supplied to the spray pipe 64 and the discharge unit 66, and the gum solution is applied to the front and back surfaces of the PS plate 12. The transport roller pair 56 forms a thin film of the gum solution on the front and back surfaces of the PS plate 12 by pinching and sending out the PS plate 12, and squeezes excess gum solution from the front and back surfaces of the PS plate 12.

The PS plate 12 to which the gum solution has been applied is sent from the outlet 34 to the drying section 20 by the pair of conveying rollers 56. The shutter (not shown) provided at the discharge port 34 is used for controlling the timing of starting the processing of the PS plate 12 or the PS timing.
The plate 12 operates at the timing of being sent out from the desensitizing unit 18 to open the discharge port 34, and the drying air from the drying unit 20 unnecessarily enters the desensitizing unit 18, and the gum solution is supplied to the conveying roller pair 56. To prevent sticking,
The air enters from the outlet 34 and reaches the developing unit 14 to prevent the developer from being deteriorated by carbon dioxide in the air, or the moisture in the developer, washing water, and moisture in the gum solution evaporate. It is prevented from getting out of the discharge port 34.

In the drying section 20, drying air is blown from the ducts 76A and 76B while the PS plate 12 is transported by the support roller 68 and the transport roller pairs 72 and 74. As a result, the PS plate 12 is discharged from the outlet 70 after the protective film is formed by the applied gum solution.

By the way, in the PS version processor, the PS
In order to maintain the finish quality of the printing plate 12 constant, it is necessary to maintain the brush pressure of the brush roller 80 at an appropriate brush pressure. For this reason, in the PS version processor 10,
It is necessary to adjust the brush pressure periodically or at a timing according to the finish of the PS plate 12 or the like.

The adjustment of the brush pressure is performed by using an adjustment bolt 128 provided at a predetermined position on the side plate 104.

In the PS plate processor 10, usually, an adjusting bracket 140 is mounted on the adjusting bolt 128.
At this time, as shown in FIG. 4, the adjustment fitting 140 is moved to the box 1 with the stopper 144 turned downward.
42, the head 1 of the adjustment bolt 128 is inserted into the box hole 146.
38 is fitted in a fitted state.

As a result, in the adjustment fitting 140, the surface of the stopper 144 abuts against the inner surface of the side plate 104, and rotation about the box hole 146 is prevented. Therefore, the adjustment bolt 128 whose head 138 is fitted into the box hole 146 of the adjustment fitting 140 does not needlessly rotate. In other words, the adjustment fitting 140 is usually mounted on the adjustment bolt 128 as a locking device as shown in FIG.

On the other hand, when adjusting the brush pressure using the adjustment bolt 128, first, the adjustment bracket 140 is used.
Is removed from the adjustment bolt 128. After that, as shown in FIG.
The head 138 of the adjustment bolt 128 is fitted into the box hole 146 of the box portion 142 with the 44 up.
Thus, the adjustment bolt 1 for adjusting the brush pressure using the stopper portion 144 of the adjustment fitting 140 as a handle.
28 rotation operations can be performed.

That is, by turning the adjustment bolt 128, the adjustment plate 118 moves up and down. The vertical movement of the adjustment plate 118 causes the brush roller 80
Is moved, and the brush pressure on the PS plate 12 when the PS plate 12 is held between the brush roller 80 and the roller 46 is changed. Note that a conventionally known method can be used for adjusting the brush pressure, and a detailed description thereof is omitted here.

After the brush pressure has been adjusted in this manner, the adjustment fitting 140 is removed from the adjustment bolt 128, and then the adjustment fitting 1 is set so that the stopper 144 is directed downward.
After reversing 40, the head 138 of the adjustment bolt 128 is fitted into the box hole 146 of the box 142 so that the stopper 144 is parallel to the side plate 104. At this time, the twelve peaks 148 are formed on the inner surface of the box hole 146.
Is formed, the adjustment fitting 140 is attached to the adjustment bolt 1
Regardless of the stop position of the rotation of the head 138, the rotation of the adjustment bolt 128 can be reliably prevented.

As described above, by attaching the adjustment fitting 140 to the adjustment bolt 128, the surface of the stopper portion 144 comes into contact with the inner surface of the side plate 104, and the rotation of the adjustment bolt 128 together with the adjustment fitting 140 is prevented. Dripping. That is, the loosening of the adjustment bolt 128 is treated.

As described above, in the PS version processor 10,
Since the adjustment fittings 140 are attached to the adjustment bolts 128 for adjusting the brush pressure, the operation of adjusting the brush pressure is extremely easy.

The adjusting bracket 140 is formed by bending a flat plate made of metal or the like into a substantially L-shape, so that the box hole 14 is formed at a predetermined position.
Since it has a simple structure in which 6 is formed, it can be manufactured at low cost.

Note that the present embodiment described above does not limit the configuration of the present invention. For example, in the present embodiment, the stopper portion 144 of the adjustment fitting 140 is described to be in direct contact with the side plate 104, but the stopper portion 144
Is provided with a biasing means such as a leaf spring.
4 may be urged in a direction in which the stopper 144 is separated. Accordingly, even if a gap is formed between the stopper portion 144 and the side plate 104, the rotation of the box portion 142 can be reliably prevented. Stopper part 1
Since a gap can be created between 44 and side plate 104, attachment and detachment of adjustment fitting 140 is facilitated.

In this embodiment, the adjustment fitting 140 having a substantially L-shape has been described as an example. However, the shape of the adjustment fitting 14 is not limited to this. For example, the adjustment fitting 150 shown in FIG. May be used.

The adjusting bracket 150 has a box 152 corresponding to the width of the horizontal section 124 formed on the side plate 104.
Are formed in a substantially U-shape in which legs 154 and 156 are formed in pairs at both ends.

The adjusting bracket 150 is formed of a pair of legs 15.
4 and 156 so as to sandwich the horizontal portion 124 of the side plate 104. At this time, the box portion 152 has a box hole 15 corresponding to the shape of the head 138 of the adjustment bolt 128 at a position facing the head 138 of the adjustment bolt 128.
8 (for example, a substantially hexagonal shape) are formed.

The adjusting bracket 150 has a leg 156 facing the inner surface of the side plate 104 and a leaf spring 16 as an urging means.
0 is attached. The leaf spring 160 is bent such that the intermediate portion protrudes toward the leg 154 which is the side plate 104 side.

The adjusting bracket 150 thus configured
Then, when performing the brush pressure adjustment, the legs 154, 15
The head 138 of the adjustment bolt 128 is fitted into the box hole 158 of the box 152 with the 6 facing upward (opposite to the side plate 104), and the adjustment bolt 128 is easily rotated using the legs 154 and 156 as handles. Then, the brush pressure can be adjusted. When the adjustment of the brush pressure is completed, the leg portions 154 and 156 are directed downward to the box holes 15.
8 is fitted with a head 138.

As a result, the leg portions 154 and 156 are
04, and the leaf spring 160 provided on the leg 156 abuts against the side plate 104, and the leg 1
56 is urged away from the side plate 104. Therefore, rattling of the adjustment fitting 150 is prevented, and rotation of the adjustment bolt 128 can be reliably prevented.

In this embodiment, the brush roller 8
Although the adjustment bracket 140 to which the present invention is applied is attached to the adjustment bolt 128 for adjusting the brush pressure on the PS plate 12 between the roller 0A and the roller 46, the adjustment bracket 140 is similarly applied between the brush roller 80B and the roller 90. 140 can be mounted. In this case, the roller 90 is supported by the adjustment plate 118, and the roller 9 is
0 may move with respect to the brush roller 80B.

The adjusting bracket (brush pressure adjusting bracket) of the present invention is not limited to a flat plate bent into a substantially L-shape or a substantially U-shape. The member may be bent in a substantially L-shape, and engagement holes corresponding to the box holes 146 and 158 may be provided at predetermined positions. Further, the engagement hole is not limited to the box hole 146, and may be a wrench-shaped cut.

In this embodiment, the brush roller 8
Adjustment 140 or adjustment 1
Although the example using 50 has been described, the invention is not limited to this, and may be used for adjusting the clamping pressure of a roller such as a rubber roller.

Further, in the present embodiment, the adjustment fitting 14
However, the surface of the stopper portion 144 is brought into contact with the inner surface of the side plate 104 to prevent the rotation of the adjustment bolt 128 together with the adjustment bracket 140. However, the portion extended from the adjustment bracket 140 is replaced by a PS plate processor other than the side plate 104. May be contacted to prevent rotation of the adjustment bolt 128 together with the adjustment fitting 140.

In the present embodiment, the PS plate 12 is applied as the photosensitive material, and the adjustment fitting 140 is mounted on the PS plate processor 10 for processing the PS plate 12, but a brush roller is provided. The present invention can be applied not only to the photosensitive lithographic printing plate but also to a photosensitive material processing apparatus for processing any photosensitive material such as photographic paper and photographic film.

[0102]

As described above, according to the present invention, there are formed a connecting portion which engages with the head of the adjusting bolt and a stopper which can contact the side plate or the like to prevent the rotation of the engaging portion. By doing so, it is possible to combine the function of preventing the adjustment bolt from loosening and the function of screwdriver (bolt driver), and to obtain an excellent effect that the adjustment of the brush pressure becomes extremely easy.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a PS plate processor applied to an embodiment.

FIG. 2 is a perspective view of a main part showing a schematic configuration near a side plate provided with an adjustment bolt to which an adjustment metal fitting is attached.

FIG. 3 is a schematic cross-sectional view of a main part along a vertical direction near a side plate showing a mounting state of an adjustment bracket at the time of brush pressure adjustment.

FIG. 4 is a schematic cross-sectional view of a main part along a vertical direction near a side plate showing a mounting state of an adjustment bracket in a normal state.

FIG. 5 is a perspective view of a main part showing another example of the position of the adjustment fitting to which the present invention is applied.

[Explanation of symbols]

 Reference Signs List 10 PS plate processor (photosensitive material processing device) 12 PS plate (photosensitive material) 14 Developing unit 24 Developing tank 44 Guide plate 46 Roller (backup roller) 80 (80A, 80B) Brush roller 90 Roller (backup roller) 100 Rotary shaft 106 Bearing 118 Adjustment plate 128 Adjustment bolt 138 Head 140, 150 Adjustment fitting 142, 152 Box part (engagement part) 144 Stopper part 146, 158 Box hole (engagement hole) 154, 156 Leg part (stopper part) 160 Leaf spring (Biasing means)

Continued on the front page F term (reference) 2H114 AA04 AA23 BA01 EA01 GA01 GA21 3B116 AA08 AB16 AB32 AB44 BA02 BA16 BA34 BB01 3B201 AA08 AB16 AB32 AB44 BA02 BA16 BA34 BB01 BB92 CB23

Claims (5)

[Claims] 1. A brush pressure adjusting bracket for rotating a brush pressure adjusting bolt provided for adjusting a brush pressure on a brush roller which is rotatably supported by a pair of side plates and brushes the surface of a photosensitive material, An engaging portion that is rotatably engaged with the head of the brush pressure adjusting bolt; and the engaging portion that is engaged with the head of the brush pressure adjusting bolt is rotatable integrally with the head. At the same time, the engaging portion contacts the side plate supporting the brush roller while being engaged with the head of the brush pressure adjusting bolt, thereby preventing the engaging portion from integrally rotating with the head. And a stopper portion having the engaging portion extended as described above. 2. A brush pressure adjusting bracket according to claim 1, wherein said engaging portion and said stopper portion are connected in a substantially L-shape. 3. When the side plate is provided with a mounting portion for the adjustment bolt with a predetermined width, the stopper portion extends from the engaging portion so as to sandwich the mounting portion. The brush pressure adjusting bracket according to claim 1. 4. The brush pressure adjusting bracket according to claim 1, further comprising a biasing unit that biases the stopper in a direction away from the side plate. 5. A polygonal engagement hole into which the head of the hexagonal bolt is inserted is formed in the engagement portion when the brush pressure adjusting bolt is a hexagonal bolt. The brush pressure adjusting bracket according to any one of claims 1 to 4.