JP2003107748A - Photosensitive material processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembling performance of rollers arranged in a pair above and below a carrying path. SOLUTION: A backup roller 50 is attached, by putting a bearing 112 attached to a rotary shaft 110, into a cut 118 formed at a supporting part 106 of a pair of brackets 100. A brush roller 48 is mounted on the backup roller by putting the bearing 128 of the rotary shaft 124 into the cut 144 of the bracket 138, making a coupling 134 of the rotary shaft 126 face a receiving part 152 of a receiving member 150 attached to the bracket 146 and fitting a connection member 156 of a driving shaft 152 to a connection hole 136. At this time, since an interval of the supporting parts 142 and 148 of the bracket receiving the brush roller is wider than the interval of the supporting parts 106 supporting the backup roller, assembly is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sandwiches a photosensitive material such as a lithographic printing plate by a pair of rollers such as a brush roller and a backup roller which are arranged one above the other for carrying and processing such as processing liquid processing. The present invention relates to a photosensitive material processing device.

[0002]

2. Description of the Related Art In a photosensitive lithographic printing plate having a photosensitive layer formed on a support made of aluminum or the like, a light-receiving portion and a non-light-receiving portion are formed on the photosensitive layer by exposure, and then a developing treatment is performed with a developing solution. By removing the unnecessary photosensitive layer, an image is formed.

On the other hand, in the photosensitive lithographic printing plate, a photosensitive layer is formed on the support by a photoadhesive layer, a photopolymerizable layer, etc., and further,
There is a so-called four-layer photopolymer plate whose surface is protected by an overcoat layer. When the photopolymer plate is heated to a predetermined temperature, the photopolymerization layer of the light receiving portion is firmly adhered to the support through the photoadhesive layer to enhance printing durability. Further, the overcoat layer covering the photopolymerizable layer is dissolved by water.

From this point, when developing the photopolymer plate, a pre-water washing step is provided prior to the automatic developing device or the developing step, the photopolymer plate is heated prior to the developing process, and then the surface of the photopolymer plate is washed with washing water. By brushing while supplying, the overcoat layer is removed, and the photopolymerization layer in the non-light-receiving part can be surely removed during the development process.

Even in such an automatic developing device and a processing device for pre-washing treatment, the photopolymer plate is nipped and conveyed by a pair of rollers arranged above and below. Further, when brushing the photopolymer plate, the backup roller arranged below the conveying path for the photopolymer plate and the brush roller arranged above the brush roller sandwich the photopolymer plate for brushing.

At this time, the driving force is transmitted to each of the brush roller and the backup roller in order to perform reliable brushing of the photopolymer plate and stable conveyance.
The backup roller is rotationally driven in the conveying direction of the photopolymer plate, and the brush roller is rotated relative to the backup roller in the forward direction or the reverse direction to brush the surface of the photopolymer plate.

By the way, the axial end positions of the rotary shafts are matched between the rollers arranged vertically and between the rollers and the brush roller. That is, the lengths of the rollers including the length of the rotating shaft are substantially the same.

On the other hand, when performing maintenance of the apparatus, it is necessary to remove the rollers or the rollers and the brush roller arranged above and below. At this time, if the length of the photopolymer plate to be conveyed along the width direction is long, the length of the roller is accordingly long and the weight is heavy. There is a problem that is low. In particular, it is necessary for the brush roller to accurately align the mounting position of the roller body, and it is desired to improve workability during removal and assembly.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and aims to improve the assembling property of a pair of rollers, such as a backup roller and a brush roller, which are arranged vertically in pairs. An object is to provide a photosensitive material processing apparatus.

[0010]

In order to achieve the above object, the present invention conveys a photosensitive material while sandwiching the photosensitive material by a lower roller and an upper roller which are arranged in pairs vertically with a conveying path of the photosensitive material interposed therebetween. A photosensitive material processing device for processing, which is provided at both ends of the photosensitive material in a conveying direction, and is a first shaft support for supporting and axially supporting an end of a rotation shaft of a lower roller so as to be capable of being lifted upward. Means and a second axially supporting and axially supporting end portion of the rotary shaft of the upper roller so as to be able to be lifted upward on the outer side in the width direction of the photosensitive material with respect to the supporting position of the first shaft supporting means. And a shaft support means.

According to the present invention, the lower roller and the upper roller are pivotally supported by the first pivotal support means and the second pivotal support means. At this time, the second shaft support means is positioned at a predetermined position with respect to the first shaft support means by a screw or the like. As a result, a nipping force for the photosensitive material is applied between the upper roller and the lower roller.

Further, since the second shaft support means supports the end portion of the rotation shaft of the upper roller on the outer side in the width direction of the photosensitive material than the first shaft support means, when the lower roller is lifted up. Moreover, it is possible to prevent the first shaft support means from interfering with each other.

In the present invention as described above, as the first shaft support means, a bracket for inserting and supporting a bearing having the end portion of the rotation shaft of the lower roller inserted thereinto can be used. .

Further, according to the present invention, a drive gear that meshes with a gear attached to a rotation shaft of the lower roller when the lower roller is pivotally supported by the first shaft support means is included.
Rotational force can be transmitted to the lower roller via the drive gear.

Further, according to the present invention, at least one end of the rotating shaft of the upper roller is inserted into the bearing, and the second shaft support means inserts and supports the bearing in the notch. Can be used.

Further, according to the present invention, a coupling portion, in which at least a part of an inner peripheral surface of the upper roller is formed with a flat connecting hole, is integrally attached to the other rotating shaft of the upper roller,
The connection hole is rotatably supported by a support member formed in a substantially concave shape of the second shaft support means, and is provided so as to face the coupling portion supported by the second shaft support means. The connecting member having an outer shape corresponding to the inner surface shape of the above may be arranged on the rotation shaft on the drive source side.

As a result, the driving force of the driving source can be transmitted to the upper roller without impairing the detachability.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a pre-processing apparatus 10 applied to this embodiment as a photosensitive material processing apparatus.

The preprocessing device 10 uses a rectangular thin plate made of aluminum or the like as a photosensitive material as a support, and a lithographic printing plate having a photosensitive layer formed on one surface of the support.
It is used when performing a developing process after image exposure by an exposure device (not shown), and when performing a preheating process and a prewashing process prior to the developing process. Also,
The lithographic printing plate processed by the pretreatment device 10 was provided with a photoadhesive layer and a photopolymerization layer as a photosensitive layer, and an overcoat layer as an oxygen barrier layer was formed on the upper surface of the photosensitive layer. A so-called photopolymer plate is applied (hereinafter referred to as "photopolymer plate 12").

The photopolymer plate 12 having the four-layer structure is
Image exposure is performed by scanning a laser beam based on image data with an exposure device such as a setter, so that the polymerization reaction of the image portion of the photopolymerization layer is promoted. Further, the photopolymer plate 12 is subjected to a heat treatment (pre-heat treatment) prior to the development treatment, whereby the polymerization reaction of the photopolymerization layer in the image portion is promoted, and the photopolymerization layer serves as a photoadhesive layer. Through this, it firmly adheres to the support, and thus the printing durability during printing can be improved. Further, the photopolymer plate 12 is subjected to a pre-water washing treatment to remove the overcoat layer, whereby the development treatment time can be shortened and the finish quality can be improved.

In the pretreatment device 10, the photopolymer plate 12 is subjected to preheating treatment and prewashing treatment prior to the developing treatment. The photopolymer plate 12 pretreated by the pretreatment device 10 is developed by an automatic developing device. This automatic developing device is an automatic developing device having an arbitrary structure capable of developing the photopolymer plate 12. Can be used. Further, the pretreatment device 10 applied to the present embodiment may be used independently from the automatic developing device, or may be used by being connected to the automatic developing device.

In the pretreatment apparatus 10, a preheating section 16 as a preheating step is provided in the machine frame 14 on the upstream side in the conveying direction of the photopolymer plate 12, and a prewashing section 18 as a prewashing step is provided downstream. It is provided on the side.

An insertion port 20 is formed in the machine frame 14 on the upstream side of the preheating unit 16, and the insertion port 20 and the preheating unit 1 are provided.
A pair of conveying rollers 22 is provided between the two, and the photopolymer plate 12 is inserted into the insertion port 22 along the direction of arrow A, and is sandwiched by the pair of conveying rollers 22 and pulled in. A plate detection sensor 24 is provided inside the insertion port 20. In the pretreatment device 10, the plate detection sensor 24 detects the tip of the photopolymer plate 12 inserted from the insertion port 20. Thus, the driving of the transport roller pair 22 and the like is started.

In the preheating section 16, a plurality of skewer rollers 28 are arranged in the heating chamber 26. This skewered roller 2
The reference numeral 8 indicates, for example, that when a plurality of short rollers are provided with a predetermined gap to support the rollers and each roller is slightly movable along the axis, the pre-heating unit 16 heats the photopolymer plate 12. Even if the support is thermally expanded, the support is prevented from waviness or the like.

In addition, in the heating chamber 26, a heater 32 is provided as a heating means on the inlet 30 side, and a circulation fan 34 is provided on the upstream side of the heater 32.

The circulation fan 34 sends air toward the heater 32 and jets this air into the conveying path of the photopolymer plate 12 to stir the air in the heating chamber 26 so that the air in the heating chamber 26 becomes substantially uniformly at a predetermined temperature. To do. At this time, the circulation fan 34 enters air from the inlet 30 by sending air toward the heater 32 provided on the inlet 30 side and ejecting the air toward the conveyance path of the photopolymer plate 12 (direction of arrow B). Cold air near the surface of the photopolymer plate 12 is removed by scraping it from the surface of the photopolymer plate 12 to accelerate heating of the photopolymer plate 12 by the heater 32.

In the pre-heating section 16, the photopolymer plate 12
When the sheet passes through the heating chamber 26, the photopolymerization layer of the photopolymer plate 12 is accurately cured by controlling the temperature and the heating time to increase the printing durability of the photopolymer plate 12. I am trying to

On the other hand, the photopolymer plate 12 that has passed through the heating chamber 26 is sent from the outlet 36 to the pre-water washing section 18.
A cooling unit is provided between the outlet 36 of the heating chamber 26 and the pre-water washing unit 18, and before the washing water is supplied to the photo-polymer plate 12 sent from the heating chamber 26 by the pre-water washing unit 18, the photo-polymer plate By blowing air to 12 to cool the photopolymer plate 12, it is possible to prevent the photopolymer plate 12 from being rapidly cooled by the wash water supplied in the pre-water washing section 18 and causing wrinkles and the like.

A water washing tank 38 is provided in the front water washing unit 18, and a washing tank 40 for storing the washing water is formed in the water washing tank 38.

In the pre-water washing section 18, the conveying rollers 42, 44, 46 are arranged in a zigzag pattern on the pre-heating section 16 side.
The transport rollers 42, 46 are provided so as to face the upper surface of the photopolymer plate 12, and the transport roller 44 is arranged between the transport rollers 42, 46 so as to face the lower surface of the photopolymer plate 12. .

As a result, the photopolymer plate 12 sent to the pre-water washing section 18 is conveyed between the conveying rollers 42, 46 and the conveying roller 44.

Further, the upper end portion of the transport roller 44 is located above the lower end portions of the transport rollers 42 and 46, and when the photopolymer plate 12 is transported between the transport rollers 42 and 46, The conveying rollers 44 are curved so as to be slightly convex upward, and the conveying rollers 444, 46
It is sent out slightly diagonally downward from between.

It should be noted that the conveying rollers 42 and 46 are skewer rollers each of which is capable of slightly moving in the axial direction, and the conveying rollers 42 to 46 are arranged in a staggered manner. In addition to this, even if the photopolymer plate 12 heated by the preheating unit 14 contracts, wrinkles and the like are prevented from occurring.

On the other hand, the front water washing section 18 has a conveying roller 46.
Brush roller 48 and backup roller 5 on the downstream side of
0s are provided in a pair at the top and bottom. The contact position between the brush roller 48 and the backup roller 50 is
It is lower than the bottom edge of. As a result, the photopolymer plate 12 is tilted from between the transport rollers 44 and 46 and is fed between the brush roller 48 and the backup roller 50.

Further, the front water washing section 14 has a conveying roller 46.
A spray pipe 52 is provided between the brush roller 48 and the brush roller 48, and a spray pipe 54 is provided above the brush roller 48. The cleaning water in the cleaning tank 40 is supplied to each of the spray pipes 52 and 54 by a cleaning pump (not shown) or the like. Note that any conventionally known configuration can be applied to the supply of cleaning water to the spray pipes 52 and 54, and detailed description thereof will be omitted in the present embodiment.

Each of the spray pipes 52, 54 is
The axial direction is arranged along the conveyance width direction of the photopolymer plate 12, and a plurality of ejection holes are formed at predetermined intervals along the axial direction (not shown). This allows
When the cleaning water in the cleaning tank 40 is supplied to each of the spray pipes 52 and 54, the cleaning water is ejected from the ejection holes.

A channel brush 56 is provided near the spray pipe 52. The channel brush 56 is arranged with its longitudinal direction aligned with the axial direction of the spray pipe 52, and the tip end of the bristle material 58 directed downward is directed obliquely downward between the transport roller 46 and the brush roller 48. The photopolymer plate 12 is projected in the conveying path.

A rectifying plate 60 is provided near the spray pipes 52 and 54. This straightening plate 60 is
The washing water ejected from the spray pipes 52 and 54 is flown down while being evenly diffused along the width direction of the photopolymer plate 12.

The tip of the current plate 60 provided on the spray pipe 52 is inclined toward the tip of the channel brush 56. Also, the spray pipe 54
The rectifying plate 60 provided at the upper end of the rectifying plate 60 is inclined downward and faces the upper end of the brush roller 48.

As a result, the cleaning water ejected from the spray pipe 54 is supplied to the entire area of the brush roller 48 in the axial direction. As the brush roller 48, a belt-shaped member such as a pile in which a brush material is planted is formed by spirally winding it around an outer peripheral portion of a metal pipe, and the cleaning water ejected from the spray pipe 54 can be used. , Supplied with this brush material, photopolymer plate 1
The brush 2 is brushed by the brush roller 48 supplied with cleaning water.

The cleaning water ejected from the spray pipe 52 is supplied to the channel brush 56, and the photopolymer plate 12 is fed to the tip end of the channel brush 56 (hair material 58).
Photopolymer plate 1 by touching
It is supplied to the entire area in the width direction between the front end portion and the rear end portion along the conveyance direction of 2. Further, as the cleaning water is further ejected from the spray pipe 54, the brush roller 48
On the surface of the photopolymer plate 12 which is inclined toward, the cleaning water is accumulated between the brush roller 48 and the surface.

As a result, the cleaning water is supplied to the surface of the photopolymer plate 12, and the cleaning water is further accumulated between the brush roller 48 and the backup roller 50.

The overcoat layer provided on the photopolymer plate 12 is swollen by the washing water and easily peeled off. Therefore, the photopolymer plate 12 was subjected to a developing treatment by brushing with the brush roller 48 while the cleaning water was accumulated on the surface thereof, the overcoat layer was reliably removed, and the overcoat layer partially remained. Occasionally, uneven development will not occur.

The brush roller 48 is adapted to obtain a predetermined brush pressure when the photopolymer plate 12 is sandwiched between the brush roller 48 and the backup roller 50, so that the brush roller 48 is rotated in a predetermined direction. When the photopolymer plate 12 passes between the brush roller 48 and the backup roller 50, the brush roller 48 moves to the photopolymer plate 1
Brush the surface of 2.

Further, the conveying roller 46 and the spray pipe 5
A guide plate 62 is provided on the lower side of the conveying path of the photopolymer plate 12 between the two, and the rear end of the photopolymer plate 12 is sent out from between the conveying rollers 44 and 46 by the guide plate 62. In this case, it is prevented from dropping below the transport path due to its own weight or the weight of cleaning water supplied to the surface.

Further, below the idle roller 60,
The guide plate 64 is provided so as to be inclined, and the cleaning water ejected from the spray pipes 52 and 54 is made to fall from the backup roller 50 onto the guide plate 64, so that the cleaning water falling from the backup roller 50 is Cleaning tank 4
It is designed to prevent bubbling and scattering of the washing water by directly hitting the surface of the washing water stored in 0.

On the other hand, the brush roller 4 is provided in the front water washing section 18.
A skew roller 66 is provided on the downstream side of 8. The skewered roller 66 is arranged above the conveying path of the photopolymer plate 12, and the photopolymer plate 12 passing between the brush roller 48 and the backup roller 50 is
Brushing by the brush roller 48 prevents the brush roller 48 from floating and coming off the transport path.

A conveying roller pair 68 is provided at the most downstream side of the front water washing section 18. This conveying roller pair 68
From the spray pipes 52, 54 to the photopolymer plate 1
The photopolymer plate 12 is sent out while squeezing the cleaning water supplied to 2 from the front and back surfaces of the photopolymer plate 12.

In the pre-water washing section 18, the overcoat layer removed from the surface of the photopolymer plate 12 is collected in the washing tank 40 together with the washing water. Also,
Fresh washing water is supplied to the washing tank 40 by a new liquid supply means (or a replenishing means) not shown, and the overcoat layer is provided together with the excess washing water by the unshown overflow means. It is designed to be discharged from the cleaning tank 40.

Further, the conveying roller pair 68 is arranged in the machine frame 14 and sends out the photopolymer plate 12 from the discharge port 70. As shown in FIG. 1, the conveying roller pair 68 in the machine frame 14 is provided. When 68 is omitted and a processing device such as an automatic developing device is arranged adjacent to the downstream side of the preprocessing device 10, the conveying roller pair provided at the uppermost stream of this processing device is used as the conveying roller pair 68. May be.

In the pretreatment apparatus 10 thus configured, when the photopolymer plate 12 that has been imagewise exposed is inserted into the preheating section 16, the plate detection sensor 24 detects the insertion of the photopolymer plate 12. And the transport roller pair 2
The driving process of the photopolymer plate 12 is started by driving the drive such as 2. At the same time, in the pretreatment device 10, the cleaning water in the cleaning tank 40 is supplied to the spray pipes 52 and 54 provided in the pre-water washing section 18 based on the plate detection timing of the plate detection sensor 24.

The photopolymer plate 12 inserted from the insertion port 20 is drawn into the machine frame 14 and fed into the heating chamber 26. In the preheating unit 16, the heating chamber 26
The photopolymer plate 12 fed into the inside is conveyed while being heated by the heater 32. As a result, the photopolymer plate 12 is heated at the preset heating temperature and heating time, the degree of polymerization of the photopolymerization layer in the image area is increased, and the printing durability is increased and the photopolymer plate 12 is sent out.

The photopolymer plate 12 that has passed through the preheating section 16 is sent to the prewashing section 18. In the pre-water washing unit 18, the conveying rollers 42 to 46 arranged in a staggered manner feed the photopolymer plate 12 in a diagonally downward direction while applying a conveying force. As a result, the photopolymer plate 12 is fed between the brush roller 48 and the backup roller 50.

In the pre-water washing section 18, the washing water is jetted from the spray pipe 54 to supply the washing water to the brush roller 48 and the spray pipe 52.
The cleaning water is spouted from and is supplied to the channel brush 56.

As a result, when the photopolymer plate 12 is conveyed from between the conveying rollers 44 and 46 to between the brush roller 48 and the backup roller 50, the tip of the bristle material 58 projects into this conveying path. Channel brush 5
The cleaning water is supplied from 6, and the cleaning water is sent between the brush roller 48 and the backup roller 50 in a state where the cleaning water is accumulated on the upper surface and is brushed by the brush roller 48.

When the washing water is supplied to the surface of the photopolymer plate 12, the uppermost overcoat layer swells and is easily peeled off. In addition, the overcoat layer is more likely to be peeled off due to the longer immersion time in the wash water.

Therefore, in the pre-water washing section 18, the photopolymer plate 12 is reliably supplied to the entire surface of the photopolymer plate 12 by the channel brush 56, and the photopolymer plate 12 is brushed by the brush roller 48 and the backup roller 50.
Since the brush roller 48 brushes the surface of the photopolymer plate 12, the overcoat layer can be reliably removed from the surface of the photopolymer plate 12.

At this time, since the removal unevenness where the overcoat layer partially remains on the surface of the photopolymer plate 12 does not occur, the removed overcoat layer causes a development delay during the development process. It is possible to reliably prevent the occurrence of a defective finish such as uneven development due to the occurrence of such a phenomenon.

The photopolymer plate 12 thus brushed to remove the overcoat layer is removed together with the cleaning water adhering to the surface when the photopolymer plate 12 is sandwiched between the conveying roller pair 68 and discharged. Squeeze out the overcoat layer.

By the way, in the pretreatment apparatus 10, the present invention is applied to the attachment of the brush roller 48 and the backup roller 50 which are arranged in a pair in the upper and lower sides with the conveying path of the photopolymer plate 12 interposed therebetween.

Now, the attachment of the brush roller 48 and the backup roller 50 in the pretreatment device 10 will be described with reference to FIGS.

As shown in FIG. 2, the front water washing section 18 is provided with a bracket 100 which forms a first shaft supporting means at the attachment position of the backup roller 50.

As shown in FIGS. 3 and 4, the front water washing section 18
The rack side plate 1 in the washing tank 38 (not shown).
02 is provided. The rack side plates 102 are arranged in pairs on both sides of the conveyance path of the photopolymer plate 12 with the conveyance path sandwiched therebetween. A base plate 104 is fixed to the rack side plate 102 at a predetermined position.

As shown in FIG. 2, the bracket 100 is
The bracket 100 has a substantially hat shape in which a pair of legs 108 are formed on both sides of the support 106.
Each of 06 is fixed to the base plate 104 and is attached at a predetermined position so as to form a pair between the pair of rack side plates 102.

As shown in FIGS. 2 to 4, the backup roller 50 is provided with a rotating shaft 110 of a predetermined length at both ends in the axial direction. The rotating shaft 110 is a bearing 11
The bearing 112 is attached to the end of the rotary shaft 110 so as to be relatively rotatable, using an E-ring or the like (not shown). Further, the bearing 112 has the flange portion 1
14 is provided with a substantially rectangular protrusion 116, and the protrusion 116 is attached to the rotary shaft 110 so as to be outside the backup roller 50.

On the other hand, the bracket 100 has a support portion 10
A notch 118 is formed in 6. This notch 118
Is formed with an opening width that matches the width dimension of the protrusion 116 of the bearing 112.

The backup roller 100 is mounted on the rack side plate 102 by being stretched between a pair of brackets 100. At this time, the protrusion 116 of the bearing 112 attached to the rotating shaft 112 of the backup roller 50.
Goes into the notch 118 formed in the support portion 116 of the bracket 110. As a result, the backup roller 50 is pivotally supported on the rack side plate 102.

Further, the backup roller 50 is lifted upward so that the notch 11 of the bracket 100 is cut.
The protrusion 116 of the bearing 112 is pulled out of the bearing 8. As a result, the backup roller 50 is inserted between the rack side plates 102.
Is removed.

As shown in FIGS. 2 and 4, the backup roller 50 has a gear 120 attached to one rotating shaft 110. Further, as shown in FIG. 2, a gear 122 that is rotationally driven by the driving force of a driving source (not shown) is provided near one of the brackets 100.

The gear 120 of the backup roller 50 is
When the backup roller 50 is spanned between a pair of brackets 100 and attached to the rack side plate 102, the backup roller 50 meshes with the gear 122. As a result, the backup roller 50 attached to the rack side plate 102
However, the driving force of a driving source (not shown) rotationally drives the photopolymer plate 12 in the conveying direction.

As shown in FIGS. 2 to 4, the brush roller 48 has rotary shafts 124 and 126 protruding from the ends in the axial direction. The brush roller 48 includes a rotating shaft 124,
The length along the axial direction including 126 is slightly longer than the length along the axial direction of the backup roller 50 including the rotating shaft 110.

As shown in FIGS. 2 and 3, one rotating shaft 124 is inserted in a bearing 128. This bearing 12
8, a substantially cylindrical projection 132 is projected from a substantially disk-shaped flange 130, and the projection 132 is formed by the brush roller 4
It is attached to the rotary shaft 124 so as to be relatively rotatable via an E ring (not shown) or the like so as to be on the outer side in the axial direction of 8.

Further, as shown in FIGS. 2 and 4, the coupling 1 is attached to the other rotary shaft 126 of the brush roller 48.
34 is attached. The coupling 134 is formed in a substantially cylindrical shape, and the rotary shaft 126 is inserted from one end side and is fixed by a boss screw (not shown) or the like so as to rotate integrally with the rotary shaft 126.

As shown in FIG. 2, in the coupling 134, a connecting hole 136 having an inner hexagonal shape is formed on the side opposite to the rotary shaft 126.

On the other hand, as shown in FIGS. 2 and 3, a bracket 138 is mounted as a second shaft supporting means above the bracket 100 on the base plate 104 on the rotary shaft 124 side of the brush roller 48. . The bracket 138 has a horizontal portion 1 by bending the lower end portion into a substantially L shape.
40 and a support portion 142 that is directed downward from the tip of the horizontal portion 140.

As shown in FIG. 2, the support portion 142 of the bracket 138 has a protrusion 132 formed on the bearing 128.
The notch 144 is formed according to the outer shape of
The notch 144 extends in the horizontal portion 140.

In the brush roller 48, the protrusion 132 of the bearing 128 attached to the rotary shaft 124 is attached to the bracket 13
The rotary shaft 124 side is pivotally supported by the rack side plate 102 via the base plate 104 by being inserted into the notch 144 formed in the support portion 142 of FIG.

As shown in FIG. 3, the bracket 13
In No. 8, the position of the support portion 142 is near the tip position of the rotation shaft 100 of the backup roller 50 fitted in the notch 118 of the support portion 106 of the bracket 100,
As a result, the backup roller 50 is attached to the bracket 10
The support portion 142 of the bracket 138 is prevented from becoming an obstacle when the bearing is attached to the rotary shaft 110 and is inserted into the notch 118 of the bracket 100.

On the other hand, as shown in FIGS. 2 and 4, a bracket 146 is attached to the base plate 104 on the rotary shaft 126 side of the brush roller 48. The bracket 146 is attached above the bracket 100, and has a support portion 148 extending substantially horizontally at the lower end portion.

The support member 148 of the bracket 146 is provided with a receiving member 150 on the upper surface of the tip end portion. The receiving member 150 has a substantially U-shaped cross section,
As shown in FIG. 2, the receiving member 150 is arranged along the direction in which the longitudinal direction is orthogonal to the axial direction of the brush roller 48.

A receiving portion 152 is formed in the receiving member 150 at an intermediate portion in the longitudinal direction. This receiving part 1
The reference numeral 52 is formed as an arcuate recess conforming to the outer shape of the coupling 134 attached to the rotary shaft 126 of the brush roller 48.

As shown in FIG. 4, the tip of the support portion 148 of the bracket 146 is located closer to the base plate 104 than the support portion 106 of the bracket 100 disposed below the support portion 148. Accordingly, when the bearing 112 and the rotating shaft 110 of the backup roller 50 are pulled out from the notch 118 of the bracket 100,
The support portion 1 of the bracket 146 when being inserted into
It is designed to prevent the 48 from interfering with each other.

On the other hand, the brush roller 48 has a rotary shaft 124.
When the side bearing 128 (protrusion 132) is inserted into the notch 144 of the bracket 138, the rotary shaft 12 is attached to the receiving member 150 attached to the support 148 of the bracket 146.
The couplings 134 mounted on the rack 6 are opposed to each other. When the couplings 134 are placed on the receiving portions 152 and brought into contact with each other, the rotation shaft 126 side of the brush roller 48 passes through the base plate 104 and the rack side plate 102. Supported by.

At this time, in the coupling 134, since the receiving portion 152 is formed in a concave shape, the receiving member 1
Movement of 50 along the longitudinal direction is restricted.

In the brush roller 48, the protrusion 132 of the bearing 128 attached to the rotating shaft 124 is made to face the notch 144 of the supporting portion 142 of the bracket 138, and the rotating shaft 126 is rotated.
Is placed between the pair of rack side plates 102 in a state where the coupling 134 attached to the bracket 146 faces the receiving portion 152 of the receiving member 150 attached to the supporting portion 148 of the bracket 146.

In the brackets 138 and 146 fixed to the rack side plate 102 at appropriate positions with screws or the like, the protrusion 132 of the bearing 128 is inserted into the notch 144,
With the coupling 134 inserted in the receiving portion 152 of the receiving member 150, the outer peripheral portion of the brush roller 48 abuts on the outer peripheral portion of the backup roller 50 which is hung and pivoted between the brackets 100. I have come into contact with them. Depending on the mounting position of the brackets 138, 146 of the rack side plate 102 with respect to the backup roller 50, the appropriate brush pressure of the brush roller 48 is
8 and the backup roller 50 sandwich the photopolymer plate 12 between them.

On the other hand, as shown in FIGS. 2 and 3, a drive shaft 154 is provided in the vicinity of the supporting surface 148 of the bracket 146 on the surface side. This drive shaft 1
At the tip of 54, the connecting member 1 has an outer shape corresponding to the inner surface shape of the connecting hole 136 formed in the coupling 134.
56 is attached.

The brush roller 48 has a coupling 134.
To the connecting hole 136 of the drive shaft 154.
6 is inserted into the driving shaft 154 so that the driving force is transmitted from the driving means (not shown) via the driving shaft 154.

Further, the drive shaft 154 faces the receiving portion 152 of the receiving member 150 of the coupling 134,
At the position where the brush roller 48 is opposed to the backup roller 50, the connecting member 156 is inserted into the connecting hole 136 of the coupling 134.

In this way, the pretreatment device 10 to which the brush roller 48 and the backup roller 50 are attached
In the pre-water washing unit 18, when the photopolymer plate 12 is sandwiched between the brush roller 48 and the backup roller 50, the brush roller 48 is rotationally driven by the driving force transmitted to the brush roller 48 via the drive shaft 154. Then, brush the surface of the photopolymer plate 12,
Be sure to remove the overcoat layer that is swollen by the cleaning water and easily peeled off. In the front water washing section 18,
The backup roller 50 is rotationally driven by the driving force transmitted through the gear 122, and the photopolymer plate 12
It imparts a carrying force to.

On the other hand, when removing the brush roller 48 and the backup roller 50, the brush roller 48 is lifted up on the rotary shaft 124 side, and the bearing 128 attached to the rotary shaft 124 is pulled out from the notch 144 of the bracket 138. The roller 48 is slightly moved in the axial direction to pull out the connecting member 156 of the drive shaft 154 from the connecting hole 136 formed in the coupling 134 of the rotating shaft 126. As a result, the brush roller 48
Can be lifted and removed from between the pair of rack side plates 102.

The backup roller 50 is opened at the upper side by removing the brush roller 48, and the bracket 13 provided so as to receive the brush roller 48.
Since 8, 146 are located closer to the base plate 104 than the support portion 106 of the bracket 100 that supports the backup roller 50, they can be smoothly and easily lifted and removed from between the rack side plates 102.

When mounting the backup roller 50 between the rack side plates 102, the bearing 112 of the rotary shaft 110 may be inserted into the notch 118 of the bracket 100. As a result, the backup roller 50 is stretched and supported between the pair of rack side plates 102, and the gear 120 attached to the backup roller 50 meshes with the gear 122, so that the driving force can be transmitted.

The brush roller 48 has the coupling member 156 of the drive shaft 154 inserted into the coupling hole 136 of the coupling 134 attached to the rotary shaft 126.
By inserting the bearing 128 attached to the rotating shaft 124 into the notch 144 of the bracket 138 and mounting it on the backup roller 50, the rack side plate 102
Mounted between.

As described above, in the pretreatment apparatus 10, since the brush roller 48 and the backup roller 50 provided in the pre-water washing section 18 as a pair can be easily removed and assembled, the maintainability is improved.

The above-described embodiment does not limit the structure of the present invention. For example, in the present embodiment, the coupling 134 has a substantially hexagonal connecting hole 13
6 and a connecting member 15 of the drive shaft 154.
Although 6 is formed in a hexagonal shape, the shape of the connecting hole and the connecting member is not limited to this, and any structure can be used as long as the relative rotation is blocked by forming a flat surface in at least a part thereof. Shapes can be applied.

Further, the shapes of the brackets 100, 138, 146 forming the first and second shaft supporting means are not limited to those in this embodiment, but when the brush roller 48 and the backup roller 50 are detached, these rollers are removed. Any shape and configuration can be applied as long as they can be lifted substantially upward.

Further, in this embodiment, the pre-processing apparatus 10 is applied as the photosensitive material processing apparatus, and the brush roller 48 and the backup roller 5 provided in the pre-processing apparatus 10 are applied.
Although the present invention is not limited to this, the present invention is not limited to this, and in a photosensitive material processing device, an automatic developing device for developing a lithographic printing plate such as a photopolymer plate 12 or a lithographic printing plate is used. However, the present invention is not limited to this, and can be applied to the mounting of a pair of rollers arranged in pairs in a photosensitive material processing apparatus having an arbitrary configuration for performing processing such as development processing of a photosensitive material such as photographic film or photographic paper.

[0099]

As described above, according to the present invention, the upper roller and the lower roller, which are arranged vertically in pairs with the conveying path of the photosensitive material interposed therebetween, can be easily removed, and the assembling can be facilitated. Therefore, it is possible to obtain an excellent effect that workability can be improved when performing maintenance that requires the attachment and detachment of the roller pair.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a pretreatment device applied to the present embodiment.

FIG. 2 is a schematic perspective view of a main part showing attachment of a brush roller and a backup roller arranged in a pair in an upper and lower direction.

FIG. 3 is a schematic configuration diagram showing a state where the brush roller and the backup roller, which are arranged as a pair in the upper and lower sides, are attached to one end side as viewed from the downstream side in the transport direction of the photopolymer plate.

FIG. 4 is a schematic configuration diagram of a mounting state of the brush roller and the backup roller, which are arranged in a pair in the upper and lower sides, on the other end side as viewed from the downstream side in the transport direction of the photopolymer plate.

[Explanation of symbols]

10 Pre-processing equipment (photosensitive material processing equipment) 12 Photopolymer plate (photosensitive material) 16 Pre-heating section 18 front water washing section 48 brush roller (upper roller) 50 Backup roller (lower roller) 100 bracket (1st shaft support) 106 support (first shaft support means) 110 rotation axis (rotation axis of lower roller) 112 bearing (first shaft support means) 118 notch (first shaft support means) 120, 122 gears 124, 126 rotating shaft (rotating shaft of upper roller) 128 bearings (second shaft support means) 134 Coupling 136 Connection hole 138, 146 Bracket (second shaft support means) 142, 148 Supports (second shaft support means) 144 notch (second shaft support means) 150 Receiving member (second shaft supporting means) 154 drive shaft 156 connecting member

Claims (5)

[Claims] 1. A photosensitive material processing apparatus which conveys and processes a photosensitive material while sandwiching the photosensitive material by a lower roller and an upper roller which are arranged in pairs vertically with a conveying path of the photosensitive material interposed therebetween. A first shaft support means which is provided at both ends in the direction and supports and supports the end of the rotary shaft of the lower roller so as to be able to be lifted upward; and a support position of the first shaft support means. A second shaft support means for supporting and axially supporting the end portion of the rotation shaft of the upper roller so as to be able to be lifted upward on the outer side in the width direction of the photosensitive material; apparatus. 2. The first shaft support means is a bracket that inserts and supports a bearing, into which an end portion of the rotating shaft of the lower roller is inserted, into a notch.
The light-sensitive material processing apparatus described in 1. 3. A drive gear that meshes with a gear attached to a rotation shaft of the lower roller when the lower roller is pivotally supported by the first shaft support means, and the drive gear is interposed therebetween. The photosensitive material processing apparatus according to claim 1 or 2, wherein a rotational force is transmitted to the lower roller. 4. At least one end of the rotating shaft of the upper roller is inserted into a bearing, and the second shaft supporting means includes a bracket for inserting and supporting the bearing in the notch. 4. The photosensitive material processing device according to claim 1. 5. A coupling portion, in which at least a part of an inner peripheral surface of the upper roller is formed with a flat connecting hole, is integrally attached to the other rotating shaft of the upper roller, and the second shaft supporting means is substantially formed. It is rotatably supported by a support member formed in a concave shape, and is provided so as to face the coupling portion supported by the second shaft support means and has an outer shape corresponding to the inner surface shape of the connection hole. 5. The photosensitive material processing apparatus according to claim 4, wherein the connecting member is arranged on the rotary shaft on the drive source side.