JP3924097B2 - Photosensitive material processing equipment - Google Patents

Description

【００７２】
このような繰り返し単位を有する分子量数千〜数十万の線状有機ポリシロキサンを主成分とする。ここで、Ｒは、炭素数１〜１０のアルキル基あるいはフェニル基であるが、Ｒの６０％以上がメチル基であるものが好ましい。このような線状有機ポリシロキサンは、反応性の架橋剤を添加して架橋シリコーンゴムとするのが一般的である。
（３）サーマル版
（ａ）ポジ型
ポジ型のサーマル版は、例えば支持体上に下塗層、感光層を設けた構造となっている。例えばこのポジ型のサーマル版に当てたレーザ光の光エネルギーが熱エネルギーに変換され、感光層のバインダーの会合状態が変化して、感光層がアルカリ可溶性となる。現像によりこの部分を除去し、非画像部とする。
（ｂ）ネガ型
ネガ型のサーマル版は、例えば支持体上に密着層、感光層を設けた構造となっている。例えばこのネガ型のサーマル版に当てたレーザ光の光エネルギーが熱エネルギーに変換され、感光層の酸発生剤が酸を発生する。この後、前加熱によりこの酸を触媒として、熱架橋反応が促進され硬化して画像部となる。非画像部の感光層は現像により溶解除去される。
【００７３】
【表１】

【００７４】
【発明の効果】
以上説明した如く本発明に係る感光材料処理装置は、ブラシローラの芯材となるローラにブラシ用帯体を取り付ける際、接着剤を用いなくても巻き緩みがなく、安定した取り付け状態を維持することができるという優れた効果を有する。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る自動現像機の概略構成図である。
【図２】本発明の第１実施形態に適用された感光材料の断面図である。
【図３】本発明の第１実施形態に係るブラシローラの斜視図である。
【図４】（Ａ）乃至（Ｄ）は本発明の第１実施形態で適用される帯体の製造工程を示す流れ図である。
【図５】図３の５−５線に沿った拡大断面図である。
【図６】本発明の第１実施形態の変形例に係るブラシローラの斜視図である。
【図７】（Ａ）は第１実施形態の変形例に係るブラシローラの溝の断面図であり、（Ｂ）は他の変形例に係る（Ａ）に対応する断面図である。
【図８】本発明の第２実施形態に係るブラシローラの分解斜視図である。
【図９】図８の９−９線に沿った断面図である。
【符号の説明】
１００ 自動現像機
１０２ 感光材料
１０４ アルミニウム
１０６ フォトポリマー層
１０８ 保護層
１１０ 前加熱部
１２０ 前水洗部
１２６ ブラシローラ
１３０ 現像部
１３２ 貯留槽
１３８ リンス部
１４２ ブラシローラ
１４４、１４６ 受けローラ
１５６ フィニッシャー部
１６４ ローラ（芯材）
１６６ ブラッシング用帯体
１８０、１８２ 金属ワイヤ（固定部材）
１８４、１８６ 溝
１９０ ブラッシング用帯体
１９２ 溝
１９４ 樹脂片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a photosensitive material processing apparatus for brushing a photosensitive layer of a photosensitive material with a brush member under the processing liquid when the photosensitive material is processed with the processing liquid while being conveyed.
[0002]
[Prior art]
In a photosensitive material, for example, a photosensitive lithographic printing plate, a photosensitive layer layered on an aluminum plate as a support is exposed to form a light receiving portion and a non-light receiving portion, and then an unnecessary photosensitive layer is formed in the processing with a developer. An image is formed by removing the image.
[0003]
During the processing with the developer, an unnecessary photosensitive layer is removed by brushing the photosensitive layer with a brush roller while the photosensitive lithographic printing plate is immersed in the developer. Thereby, a detailed image can be formed.
[0004]
Here, the conventional brush roller is configured by previously planting a bristle material in a channel having a substantially U-shaped cross section and winding the channel tightly in a spiral shape around the outer periphery of the roller. However, with such a structure, there is a possibility that streaks are uneven on the surface of the photosensitive lithographic printing plate that has been subjected to the brushing process due to the large gap in the brush roller axial direction between the bristle materials of the spirally wound channel.
[0005]
Therefore, in order to solve this problem, it has been considered that a cloth in which a hair material is planted in advance, that is, a belt-like flocked cloth, is wound around a roller in a spiral shape. At the time of winding, an adhesive is applied to the back surface side (the surface side where the hair material is not planted) of the flocking cloth, and the flocking cloth is fixed to the roller by this adhesive.
[0006]
As described above, since the band-like flocked cloth has the bristle material planted on the band-shaped cloth, the number of windings on the roller is reduced and the occurrence of unevenness in the stripes can be eliminated. As related prior art, there are JP-A-3-96955 and JP-A-10-48840.
[0007]
[Problems to be solved by the invention]
However, since the adhesive is used when the flocked fabric is wound around the roller, the adhesive oozes out from the tip of the flocked fabric and solidifies to impair the flexibility of the bristle, and the brushing process There was a possibility of scratching the photosensitive lithographic printing plate surface. Further, the adhesive may be dissolved by the developing solution and enter the developing solution to cause development failure.
[0008]
In consideration of the above-mentioned facts, the present invention can provide a photosensitive material processing apparatus capable of maintaining a stable mounting state without winding loosening without using an adhesive when a flocking cloth is attached to the main body of a brush roller. Is the purpose.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 is a photosensitive material processing apparatus for brushing a photosensitive layer of the photosensitive material with a brush member under the processing solution when the photosensitive material is processed with the processing solution while being conveyed.
The brush member is composed of a roller that rotates on a shaft, and a brushing band that is attached to an outer peripheral portion of the roller and in which a hair material is woven into a sheet-like base material, and the brushing member is disposed on the outer peripheral portion of the roller. A groove portion for receiving a fixing member for fixing the belt member and the brushing belt member is formed.
[0010]
According to a second aspect of the present invention, in the first aspect of the present invention, the groove is formed in a spiral shape on the outer periphery of the roller.
[0011]
According to a third aspect of the present invention, in the first aspect of the present invention, the groove is formed on the outer peripheral portion of the roller along the axial direction of the roller.
[0012]
A fourth aspect of the invention is characterized in that, in the invention of the second aspect, the fixing member is a metal wire.
[0013]
The invention according to claim 5 is the invention according to claim 3, wherein the fixing member is a resin piece.
[0014]
The invention described in claim 6 is characterized in that, in the invention described in claim 3, the fixing member is a metal piece.
[0015]
According to the first aspect of the present invention, the brush member is configured by attaching a brushing strip to the outer peripheral portion of the roller. The brushing strip is brushed in a groove formed in the outer peripheral portion of the roller. It is fixed by a fixing member accommodated together with the belt. That is, the brushing belt can be fixed to the outer peripheral portion of the roller without using an adhesive. For this reason, the adhesive penetrates into the bristle material from the end of the brushing band and solidifies without damaging the flexibility of the bristle material and scratching the plate surface. When the band is attached, there is no winding looseness without using an adhesive, and a stable attachment state can be maintained. Further, since no adhesive is used, the troublesome work of applying the adhesive is eliminated, and the brush member can be manufactured at a low cost.
[0016]
In addition, as a groove part, it is preferable to be formed in the outer peripheral part of a roller helically as described in Claim 2, and a metal wire is preferable as a fixing member in this case as described in Claim 4. . Further, as described in claim 3, the groove portion is preferably formed on the outer peripheral portion of the roller along the axial direction of the roller. In this case, the fixing member is as described in claim 5 or claim 6. As described, resin pieces or metal pieces are preferred.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of an automatic developing machine for a photosensitive material according to the present invention, for example, a photosensitive lithographic printing plate, will be described with reference to FIGS.
[0018]
FIG. 1 shows a schematic diagram of a photosensitive lithographic printing plate 100 according to this embodiment.
[0019]
A photopolymer plate 102 of the photosensitive lithographic printing plate is provided with a photoadhesive layer 105 and a photopolymerization layer 106 on an aluminum plate 104 as a support layer, as shown in FIG. An overcoat layer 108 is overlaid on the photopolymerization layer 106. That is, the photopolymer plate 102 is exposed to an image with a laser beam in a four-layer structure. Note that image exposure according to this embodiment is performed by a setter that scans and writes laser light based on digital image information. This promotes the polymerization reaction of the image portion of the photopolymerization layer.
[0020]
The photopolymer plate 102 reaches the pre-heating unit 110 located at the left end in FIG. 1 after the exposure process is completed.
[0021]
In the pre-heating unit 110, two conveyance roller pairs 112 and 114 for conveying the photopolymer plate 102 while holding it horizontally are disposed, and a heater unit 116 is provided therebetween. A guide plate 118 is provided on the lower side of the transport path of the photopolymer plate 102 so as to face the heater unit 116, and the distance between the heater surface of the heater unit 116 and the photopolymer plate 102 is kept constant. .
[0022]
By the heating by the heater unit 116, the photopolymer plate 102 increases the degree of polymerization of the light receiving portion of the photopolymerization layer 106, and improves the printing durability necessary for printing.
[0023]
A pre-water washing unit 120 is provided on the downstream side of the pre-heating unit 110, and the photopolymer plate 102 that has been pre-heated is sent in a horizontal state.
[0024]
In the pre-water washing section 120, two conveyance roller pairs 122 and 124 for horizontally conveying the photopolymer plate 102 are disposed, and a brush roller 126 is disposed above the conveyance path therebetween. ing. Further, a spray pipe 128 is disposed slightly upstream from the brush roller 126 so that water is discharged toward the conveyance path. Here, when water is discharged from the spray pipe 128 and the photopolymer plate 102 is conveyed while the brush roller 126 is rotating (counterclockwise in FIG. 1), the uppermost layer of the photopolymer plate 102 is transported. The overcoat layer 108 is wetted and removed by the brush roller 116.
[0025]
That is, the photopolymer plate 102 reaches the developing unit 130 in the next process in a state where the overcoat layer 108 is removed.
[0026]
The developing unit 130 is provided with a storage tank 132 in which a developing solution is stored. By immersing the photopolymer plate 102 in the developing solution, the non-light-receiving part of the photopolymerization layer 106 is swollen, and the non-light-receiving part Is supposed to be removed.
[0027]
Conveying roller pairs 134 and 136 are provided in the vicinity of the photosensitive lithographic printing plate insertion port and the discharge port of the developing unit 130, respectively, and the conveying roller pair 134 guides the photopolymer plate 102 to the storage tank 132. The conveyance roller pair 136 has a role of guiding the photopolymer plate 102 to the rinse section 138 of the next process.
[0028]
The storage tank 132 is provided with a guide plate 140, and the photopolymer plate 102 is guided by the guide plate 140 and conveyed in a large arc. The storage tank 132 is provided with a brush roller 142 above the conveyance path. A pair of receiving rollers 144 and 146 are disposed below the conveying path so as to face the brush roller 142, and the photopolymer plate 102 is disposed between the brush roller 142 and the receiving rollers 144 and 146. It is transported while being pinched between. For this reason, the photopolymerization layer 106 of the photopolymer plate 102 is applied with the brush roller 142 with a predetermined pressure, and the non-light-receiving portion of the photopolymerization layer 106 is removed by the rotation of the brush roller 142. Note that unnecessary non-light-receiving portions near the boundary between the light-receiving portions and the non-light-receiving portions are also reliably removed by brushing of the brush roller 142.
[0029]
The rinse section 138 is provided with two conveyance roller pairs 148 and 150 for horizontally holding and conveying the photopolymer plate 102, and spray pipes 152 and 154 are arranged in the vertical direction of the conveyance path therebetween. Has been. Washing water is discharged from the spray pipes 152 and 154.
[0030]
Here, when the photopolymer plate 102 is discharged from the developing unit 130 and reaches the rinse unit 138, water is discharged from the spray pipes 152 and 154, and the front and back surfaces of the photopolymer plate 102 are cleaned. The washed photopolymer plate 102 is sent to the finisher unit 156 in the next process.
[0031]
The finisher unit 156 is provided with two conveyance roller pairs 158 and 160 for horizontally holding and conveying the photopolymer plate 102, and a spray pipe 162 is disposed above the conveyance path therebetween. Yes. A finisher liquid (desensitizing liquid) is discharged from the spray pipe 162.
[0032]
Here, the finisher liquid is discharged from the spray pipe 162 in a state where the photopolymer plate 102 is horizontally conveyed through the finisher unit 156, and is coated on the image forming surface.
[0033]
The above is the process of processing the photopolymer plate 102. The photopolymer plate 102 after completing these steps is dried in a drying section (not shown), and all the processes are completed.
[0034]
Here, in the automatic developing machine 100, brush rollers 126 and 142 are applied, and the detailed configuration of these brush rollers 126 and 142 will be described below with reference to FIG. Since the brush roller 142 used in the developing unit 130 is the basic one, the brush roller 142 for the developing unit 132 will be described as an example.
[0035]
As shown in FIG. 3, the brush roller 142 includes a roller 164 as a core material and a belt-like brushing belt 166 (hereinafter simply referred to as a belt 166) wound around the outer periphery of the roller 164. ing.
[0036]
As shown in FIG. 4A, the band 166 first holds the fabric 168 which is a sheet-like base material so as to be opposed to each other, and is located at a portion excluding the widthwise end edges 168A and 168B of the fabric 168. The bristle material 170 is woven so as to hang over. Here, the hair material 170 is applied with a pile as a natural fiber or an artificial fiber material in the present embodiment. The bristle material 170 may be a metal as long as it has an appropriate thickness. The fabric 168 is not limited to natural fibers and artificial fibers, and may be a thin metal.
[0037]
Here, the materials of the bristle material 170 are classified and listed.
-----------------------------------
(1) Natural fiber
Vegetable fiber, animal fiber
(2) Man-made fiber
Polyamides such as nylon 6, nylon 66, nylon 6, 10 and nylon 11
Polyesters such as polyethylene terephthalate and polybutylene terephthalate
Polyacrylics such as polyacrylonitrile and polyalkyl acrylate
polypropylene
Polystyrene etc.
(3) Metal fiber
Stainless steel
Brass etc.
-----------------------------------
Here, after weaving the bristle material 170 into the fabric 168 in a tensioned state, the bristle material 168 is cut at an intermediate portion of the bristle material 170, so that the prototype 172 of the band 166 applied in the present embodiment (see FIG. 4B). Is completed. After this prototype 172 is spirally wound around the peripheral surface of the roller 164 (see FIG. 4C), it is further sheared so that the length of the bristle material 170 is evenly arranged (see FIG. 4D). The brush roller is completed.
[0038]
The specifications of the band 166 at this time are as shown in Table 1.
[0039]
As shown in FIG. 3, metal wires 180 and 182 as fixing members are wound on both end edges 166A and 166B of the belt body 166 spirally wound around the outer periphery of the roller 164. Both end portions 180A and 182A of the wires 180 and 182 are welded to the end surface 164A of the roller 164, respectively.
[0040]
Further, two grooves 184 and 186 are formed in a spiral shape on the outer peripheral portion 164B of the roller 164, and as shown in FIG. 5, both end edge portions 166A of the belt 166 are placed in these grooves 184 and 186. 166B and the wires 180 and 182 are accommodated, and the belt body 166 is fixed to the outer peripheral portion 164B of the roller 164 by this. In addition, as a method of winding the master 172 around the roller 164, a case where a single band 166 is wound with a predetermined pitch (pitch winding) can be considered. After that, the brush roller 142 is completed by shearing the bristle material 170 and adjusting the length uniformly as described above.
[0041]
This embodiment will be described below.
[0042]
A photosensitive lithographic printing plate (for example, photopolymer plate) 102, which is a photosensitive material, reaches the preheating unit 110 after the exposure processing by the laser beam is completed, and is conveyed by the two conveying roller pairs 112 and 114, Heat is received from the heater surface of the heater unit 116. At this time, since the heater surface keeps a constant distance from the photopolymer plate 102, uniform heating can be performed.
[0043]
By the heating by the heater unit 116, the degree of polymerization of the light receiving portion of the photopolymerization layer 106 of the photopolymer plate 102 increases.
[0044]
When the preheating is completed, the photopolymer plate 102 is sent to the pre-water washing unit 120.
[0045]
In the pre-water washing section 120, water is discharged from the spray pipe 128 while the photopolymer plate 102 is conveyed to the two conveying roller pairs 122 and 124, and the brush roller 126 rotates (counterclockwise rotation in FIG. 1). As a result, the uppermost overcoat layer 108 of the photopolymer plate 102 is wetted and removed by the brush roller 116.
[0046]
The photopolymer plate 102 from which the overcoat layer 108 has been removed reaches the developing unit 130. The photopolymer plate 102 is transported by the transport roller pair 134 and immersed in the storage tank 132. In the storage tank 132, the conveyance is guided by the guide plate 140 and is conveyed in a large arc. In the storage tank 132, the photopolymer plate 102 is conveyed while being sandwiched between the brush roller 142 and the receiving rollers 144 and 146. For this reason, the brush roller 142 hits the photopolymerization layer 106 of the photopolymer plate 102 with a predetermined pressure, and the non-light-receiving portion of the photopolymerization layer 106 is removed by the rotation of the brush roller 142. In addition, the photopolymerization layer 106 of the non-light-receiving part near the boundary between the light-receiving part and the non-light-receiving part is also reliably removed by the brushing of the brush roller 142. Thereafter, the photopolymer plate 102 is sent to the rinse unit 138 by the conveying roller pair 136.
[0047]
In the rinse section 138, the front and back surfaces of the photopolymer plate 102 are washed with water discharged from the spray pipes 152 and 154 while being horizontally conveyed by the conveyance roller pairs 148 and 150. The washed photopolymer plate 102 is sent to the finisher unit 156 in the next process.
[0048]
In the finisher unit 156, the finisher liquid transported horizontally by the two transport roller pairs 158 and 160 and discharged from the spray pipe 162 is coated on the image forming surface and sent to the drying unit.
[0049]
Here, in the present embodiment, the belt rollers 166 and 142 applied to the pre-water washing unit 120 and the developing unit 130 are formed using the band body 166, but pasting using an adhesive as in the past. Therefore, there is no problem that the adhesive soaks into the bristle material 170 from the end of the band 166 and is solidified to impair the flexibility of the bristle material 170 or dissolve the adhesive in the developer. .
[0050]
Below, the assembly procedure of the brush rollers 126 and 142 will be described (the brush roller 142 is taken as an example).
First, after setting one end portion of the belt body 166 on one end portion of the outer peripheral portion 164B of the roller 164, the roller 164 is wound around the outer peripheral portion 164B in a spiral shape. At the same time, the wires 180 and 182 in which one end portions 180A and 182A are welded to the end surface 164A of the roller 164 are wound on both end edges 166A and 166B of the band 166 without the bristle material 170, and these are wound into the grooves 184 and 186. The other ends of the wires 180 and 182 are finally welded to the end surface 164C of the roller 164.
[0051]
Thereby, even if it does not apply an adhesive to the back surface of the band 166, the wound state can be maintained, and the problems due to the solidification of the hair material 170 by the adhesive and the dissolution of the adhesive in the developer can be eliminated. Can do. Further, since no adhesive is used, the troublesome work of applying the adhesive is eliminated, and the low-cost brush rollers 126 and 142 can be manufactured.
[0052]
As shown in FIG. 6, a single groove 184 is formed in a spiral shape on the outer peripheral portion 164B of the roller 164, and both end edges 166A, 166B of the band 166 without the adjacent bristle material 170 are vertically arranged. It is good also as a structure which wound and piled up and these edge parts 166A and 166B were accommodated in the groove | channel 184 with the wire 180. FIG. Further, the depth of each of the grooves 184 and 186 may be a depth L1 that can accommodate only a part of the wire 180, as shown in FIG. 7A. As shown in FIG. The depth L2 which can accommodate the whole wire 180 may be sufficient. The wires 180 and 182 are not limited to metal, and wires made of other materials such as resin may be used. Further, the fixing method of the wires 180 and 182 to the roller 164 is not limited to welding at both ends, and fixing means such as bolts may be used via brackets fixed at both ends, and the entire wires 180 and 182 may be used. It is good also as a structure fitted in the groove | channels 184 and 186 formed in the roller 164. FIG.
[0053]
In addition, although the example in which the bristle material 170 is not provided at the both ends 166A and 166B of the band 166 is shown, the wire 180 or the wires 180 and 182 are wound around the both end edges 166A and 166B provided with the bristle material 170. The grooves 184 or the grooves 184 and 186 may be accommodated. It should be noted that a wire 180 in which the belt 166 is wound around a roller 164 not provided with the grooves 184 and 186 for accommodating the wires 180 and 182, and the ends 165A and 166B where the bristle material 170 is not provided and the ends fixed to the roller 164 , 182 may be wound to fix the belt body 166 to the roller 164. At this time, a band body 166 in which the bristle material 170 is provided on both edge portions 166A and 166B may be used.
[0054]
Next, a second embodiment of the photosensitive material processing apparatus according to the present invention will be described with reference to FIGS.
[0055]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0056]
As shown in FIG. 8, in this embodiment, the brush roller 142 is composed of a roller 164 as a core material, and a brushing strip 190 (in the shape of a strip elongated in the axial direction of the roller 164 wound around the outer periphery of the roller 164). Hereinafter, it is simply referred to as a belt body 190).
[0057]
As shown in FIG. 9, the band 190 is configured in the same manner as the band 166, and is fixed on both end edges 190 </ b> A and 190 </ b> B of the band 190 wound along the circumferential direction of the roller 164. The resin piece 194 is disposed. The resin piece 194 is swollen by the developer. Here, the bristle material 170 may or may not be provided on the edge portions 190A and 190B.
[0058]
Further, a groove 192 along the axial direction of the roller 164 is linearly formed on the outer peripheral portion 164B of the roller 164, and both end edges 190A and 190B of the belt body 190 and the resin piece 194 are formed in the groove 192. Is fitted, and the belt 190 is fixed to the outer peripheral portion 164B of the roller 164 by this fitting.
[0059]
Further, the cross-sectional shapes of the groove 192 and the resin piece 194 are trapezoidal, and the resin piece 194 is inserted into the groove 192 from the axial direction of the roller 164 (the direction of arrow A in FIG. 8).
[0060]
Therefore, in this embodiment as well, as in the first embodiment, it is possible to maintain the winding state of the belt 190 around the outer peripheral portion 164B of the roller 164 without applying an adhesive to the entire back surface of the belt 190. It is possible to solve problems caused by solidification of the hair material 170 due to the penetration of the adhesive and dissolution of the developer developer. Further, since the resin piece 194 is swollen by the developer, the winding state of the band 190 on the outer peripheral portion 164B of the roller 164 can be more reliably maintained.
[0061]
Instead of the resin piece 194 as the fixing member, a metal piece may be used. The cross-sectional shape of the groove 192 and the resin piece 194 may be other than a trapezoidal shape, and the resin piece 194 may be inserted into the groove 192 from the radial direction of the roller 164 (the direction of arrow B in FIG. 8). Moreover, it is good also as a structure which fixes only the one edge part which becomes the roller rotation direction upstream of the both-ends edge part 190A, 190B of the belt | band | zone 190 with the resin piece 194 as a fixing member, and makes the other edge part a free state. .
[0062]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the present invention can be applied not only to the photopolymer plate 102 but also to other photosensitive lithographic printing plates such as a thermal plate, a waterless lithographic printing plate, and a current photosensitive lithographic printing plate. Further, the present invention is not limited to photosensitive lithographic printing plates, but can be applied to other photosensitive materials such as an X-ray film, a general black and white film, a color film, black-and-white printing paper, and color printing paper.
[0063]
Further, the present invention is applicable not only to the pre-water washing unit 120 and the developing unit 130 but also to other processing apparatuses such as the rinse unit 138.
[0064]
Further, the present invention is not limited to a method in which the photopolymer plate 102 is processed by immersing it in the developer in the storage layer 132 of the developing unit 130, and the developer is discharged onto the photopolomer plate 102 that is transported horizontally in the developing unit. The present invention can also be applied to other processing methods such as a method of discharging by means and then brushing with a brush roller.
[0065]
Here, as a precaution, the definition and type of the photosensitive lithographic printing plate shown above will be described, although well known.
(1) Current photosensitive lithographic printing plate
The current photosensitive lithographic printing plate has a structure in which a photosensitive composition is coated in a thin layer on an aluminum plate, and the photosensitive lithographic printing plate is developed after image exposure to obtain a lithographic printing plate. . The aluminum plate is usually subjected to a roughening treatment such as a mechanical method such as a brush grain method or a ball grain method, an electrochemical method such as an electrolytic grain method or a combination of both, and the surface thereof is textured. After that, it is etched with an aqueous solution of acid or alkali, and further subjected to an anodizing treatment, followed by a hydrophilization treatment as desired to obtain a support for lithographic printing, and a photosensitive layer is provided on this support and is photosensitive. A lithographic printing plate.
[0066]
This photosensitive lithographic printing plate is usually subjected to image exposure, development, water washing and gumming steps to form a lithographic printing plate, which is attached to a printing press for printing.
[0067]
Photosensitive lithographic printing plates used for preparing lithographic printing plates include positive and negative types. As the positive photosensitive composition, for example, a composition composed of an O-quinonediazide compound is widely used. Such a photosensitive substance is used alone or mixed with an alkali-soluble resin such as a novolac-type phenol resin or cresol resin, and a support. Painted on top. When a support having a hydrophilic surface is used, the exposed portion of the O-quinonediazide compound decomposes and changes to alkali-soluble, so that it is easily removed with an alkali developer to expose the hydrophilic surface of the support. Accepts water and repels ink. On the other hand, the unexposed area remaining as an image is oleophilic and accepts ink.
[0068]
Many negative photosensitive compositions, for example, use a large amount of a diazonium salt, an azide compound or a photopolymerizable compound, and such a photosensitive material is used alone or mixed with an additive such as an appropriate resin to form a support on the support. Painted on. When a support having a hydrophilic surface is used, the unexposed portion is removed with a developing solution, and the hydrophilic surface of the support is exposed. This portion accepts water and repels ink.
[0069]
On the other hand, the portion that is cured by exposure and remains as an image during development is oleophilic and accepts ink.
(2) Waterless planographic printing plate
The waterless lithographic printing plate has, for example, a structure in which a primer layer, a photosensitive layer, and a silicone rubber layer are sequentially provided on a support. For the support, an aluminum plate that is extremely dimensionally stable is used. The primer layer is made of, for example, an unsaturated monomer or an oligomer thereof using a hardener, a polymer or inorganic powder as a filler for imparting shape retention of the photosensitive layer, and a thermal polymerization inhibitor, if necessary.
[0070]
The silicone rubber layer can be represented by the following chemical formula, for example.
[0071]
[Chemical 1]

[0072]
The main component is a linear organic polysiloxane having a molecular weight of several thousands to several hundred thousand having such a repeating unit. Here, R is an alkyl group having 1 to 10 carbon atoms or a phenyl group, and preferably 60% or more of R is a methyl group. Such a linear organic polysiloxane is generally made into a crosslinked silicone rubber by adding a reactive crosslinking agent.
(3) Thermal version
(A) Positive type
The positive thermal plate has a structure in which an undercoat layer and a photosensitive layer are provided on a support, for example. For example, the light energy of the laser light applied to the positive thermal plate is converted into thermal energy, the association state of the binder in the photosensitive layer is changed, and the photosensitive layer becomes alkali-soluble. This portion is removed by development to form a non-image portion.
(B) Negative type
The negative thermal plate has a structure in which, for example, an adhesion layer and a photosensitive layer are provided on a support. For example, the light energy of laser light applied to the negative thermal plate is converted into thermal energy, and the acid generator of the photosensitive layer generates acid. Thereafter, the thermal crosslinking reaction is promoted and cured by pre-heating using this acid as a catalyst to form an image portion. The photosensitive layer in the non-image area is dissolved and removed by development.
[0073]
[Table 1]

[0074]
【The invention's effect】
As described above, the photosensitive material processing apparatus according to the present invention maintains a stable mounting state without winding looseness even when an adhesive is not used when a brush strip is attached to a roller serving as a core material of a brush roller. It has an excellent effect of being able to.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an automatic developing machine according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a photosensitive material applied to the first embodiment of the present invention.
FIG. 3 is a perspective view of the brush roller according to the first embodiment of the present invention.
FIGS. 4A to 4D are flowcharts showing a manufacturing process of a belt body applied in the first embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view taken along line 5-5 of FIG.
FIG. 6 is a perspective view of a brush roller according to a modification of the first embodiment of the present invention.
7A is a cross-sectional view of a groove of a brush roller according to a modification of the first embodiment, and FIG. 7B is a cross-sectional view corresponding to (A) according to another modification.
FIG. 8 is an exploded perspective view of a brush roller according to a second embodiment of the present invention.
9 is a cross-sectional view taken along line 9-9 of FIG.
[Explanation of symbols]
100 Automatic processor
102 Photosensitive material
104 aluminum
106 Photopolymer layer
108 Protective layer
110 Preheating section
120 Front washing section
126 Brush roller
130 Development section
132 Reservoir
138 Rinse section
142 brush roller
144, 146 Receiving roller
156 Finisher
164 Roller (core material)
166 Band for brushing
180, 182 Metal wire (fixing member)
184, 186 groove
190 Brushing strip
192 Groove
194 resin pieces

Claims (6)

A photosensitive material processing apparatus for brushing a photosensitive layer of the photosensitive material with a brush member under the processing solution when the photosensitive material is processed with a processing solution while conveying the photosensitive material,
The brush member is composed of a roller that rotates on a shaft, and a brushing band that is attached to an outer peripheral portion of the roller and in which a hair material is woven into a sheet-like base material, and the brushing member is disposed on the outer peripheral portion of the roller. A photosensitive material processing apparatus, wherein a groove for receiving a fixing member for fixing the band and the brushing band is formed. 2. The photosensitive material processing apparatus according to claim 1, wherein the groove is formed in a spiral shape on an outer peripheral portion of the roller. 2. The photosensitive material processing apparatus according to claim 1, wherein the groove is formed in an outer peripheral portion of the roller along an axial direction of the roller. 3. The photosensitive material processing apparatus according to claim 2, wherein the fixing member is a metal wire. 4. The photosensitive material processing apparatus according to claim 3, wherein the fixing member is a resin piece. 4. The photosensitive material processing apparatus according to claim 3, wherein the fixing member is a metal piece.

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