公开(公告)号：US4294905A

公开(公告)日：1981-10-13

申请号：US49246

申请日：1979-06-18

申请人： Yoshio Okishi ,  Akinobu Koike ,  Shizuo Miyano

发明人： Yoshio Okishi ,  Akinobu Koike ,  Shizuo Miyano

IPC分类号： G03F7/00 ,  G03F7/021 ,  G03C1/60 ,  G03C1/52 ,  G03F7/08

CPC分类号： G03F7/0212 ,  Y10S430/111

摘要： A light-sensitive lithographic printing plate comprising a support having on at least one surface thereof a light-sensitive layer, said light-sensitive layer exhibiting a higher oleophilicity (high affinity to grease) at the outermost surface thereof than in the balance of the light-sensitive layer. This light-sensitive lithographic printing plate is capable of beginning the printing operation with a relatively small number of spoilages and exhibits not only excellent press life but also high developability and excellent storage stability.

摘要翻译： 一种感光平版印刷版，其包含在其至少一个表面上具有光敏层的支撑体，所述感光层在其最外表面具有比在光的平衡中更高的亲油性（对油脂的高亲合力） 敏感层。 这种光敏平版印刷版能够以相对少量的变质开始印刷操作，并且不仅具有优异的印刷寿命，而且具有高显影性和优异的储存稳定性。

公开(公告)号：US5250393A

公开(公告)日：1993-10-05

申请号：US808607

申请日：1991-12-17

申请人： Masanori Imai, deceased ,  Keiji Akiyama ,  Tadao Toyama ,  Akinobu Koike

发明人： Masanori Imai, deceased ,  Keiji Akiyama ,  Tadao Toyama ,  Akinobu Koike

IPC分类号： G03F7/32 ,  G03F7/30 ,  G03F7/021

CPC分类号： G03F7/322

摘要： A method for preparinq a lithographic printing plate comprising the steps of imagewise exposing, to light, a negative-working presensitized plate for use in making a lithographic printing plate which comprises a substrate provided thereon with a light-sensitive layer comprising an aromatic diazonium compound having at least one member selected from the group consisting of carboxyl groups, phenolic hydroxyl groups, sulfonic acid residues, sulfinic acid residues and phosphorus atom-containing oxyacid residues and developing the imagewise exposed presensitized plate with a developer which comprises an aqueous solution of an alkali metal or ammonium silicate having a ratio: [SiO.sub.2 ]/[M], wherein [SiO.sub.2 ] and [M] represent the molar concentrations of SiO.sub.2 and the alkali metal or ammonia in the developer respectively, ranging from 0.15 to 0.75 and an SiO.sub.2 content ranging from 1.0 to 4.0% by weight on the basis of the total weight of the developer to remove the unexposed portion of the light-sensitive layer.The method for preparing lithographic printing plate makes it possible to treat both negative- and positive-working presensitized plates with a single developer and a single automatic developing machine and can provide a lithographic printing plate having excellent printing durability and free of background contamination. Moreover, the replenisher for developer of the present invention permits repeated development process over a long time period without deteriorating the developability thereof and makes it possible to perform developing process without accompanying any formation of deposits due to the light-sensitive resin components at the bottom of a developing bath.

公开(公告)号：US5047309A

公开(公告)日：1991-09-10

申请号：US362255

申请日：1989-06-06

申请人： Akinobu Koike ,  Keiji Akiyama

发明人： Akinobu Koike ,  Keiji Akiyama

IPC分类号： G03F7/016 ,  G03F7/11

CPC分类号： G03F7/0166 ,  G03F7/11

摘要： A photosensitive recording material comprising (a) a substrate having a hydrophilic surface, (b) an undercoating layer comprising at least one compound having at least one functional group selected from the group consisting of thiol, thioether and disulfide groups, and (c) a photosensitive layer comprising at least one diazonium compound and a high molecular weight binder compound which is insoluble in water and soluble in aqueous alkaline solution. The resulting developed plate yields no background contamination in printing process.

摘要翻译： 一种光敏记录材料，其包含（a）具有亲水表面的底物，（b）底涂层，其包含至少一种具有至少一个选自硫醇，硫醚和二硫基的官能团的化合物，和（c） 感光层，其包含至少一种重氮化合物和不溶于水并可溶于碱性水溶液的高分子量粘合剂化合物。 所得到的显影板在印刷过程中不产生背景污染。

公开(公告)号：US4617250A

公开(公告)日：1986-10-14

申请号：US616040

申请日：1984-06-01

申请人： Eiji Nakakita ,  Akinobu Koike ,  Toshiyuki Sekiya ,  Hiroshi Misu ,  Nobuyuki Kita

发明人： Eiji Nakakita ,  Akinobu Koike ,  Toshiyuki Sekiya ,  Hiroshi Misu ,  Nobuyuki Kita

IPC分类号： G03C1/54 ,  G03F7/004 ,  G03F7/016 ,  G03F7/021 ,  G03C1/60 ,  G03F7/08

CPC分类号： G03F7/0166

摘要： A light-sensitive composition for use with lithographic printing plates is described which comprises (1) a light-sensitive, organic solvent soluble and substantially water-insoluble diazo resin which is the reaction product of a water-soluble, light-sensitive condensate of an aromatic diazonium compound and an organic condensing agent with a halogenated Lewis acid or a salt thereof, (2) a substantially water-insoluble, film forming organic high-molecular weight compound having an acid value of from 10 to 200, (3) a polynuclear aromatic sulfonic acid or a salt thereof, and (4) a salt-forming organic dye compound.

摘要翻译： 描述了一种用于平版印刷版的感光组合物，其包括（1）光敏的有机溶剂可溶和基本上不溶于水的重氮树脂，其是水溶性，光敏性缩合物的反应产物， 芳香族重氮化合物和有机缩合剂与卤化路易斯酸或其盐，（2）基本上不溶于水的成膜有机高分子化合物，其酸值为10〜200，（3）多核 芳族磺酸或其盐，和（4）成盐有机染料化合物。

公开(公告)号：US5112743A

公开(公告)日：1992-05-12

申请号：US523997

申请日：1990-05-16

申请人： Akihiko Kamiya ,  Akinobu Koike ,  Masanori Imai

发明人： Akihiko Kamiya ,  Akinobu Koike ,  Masanori Imai

IPC分类号： G03F7/021

CPC分类号： G03F7/021

摘要： Disclosed is a novel diazo resin which has at least one repeating unit represented by the following general formula (I): ##STR1## wherein R.sup.2 represents a hydrogen atom, an alkyl group or an alkoxy group, a hydroxyl group, a carboxy ester group or a carboxyl group: R.sup.1 represents a carboxyl group or a group having at least one carboxyl group; R.sup.3 and R.sup.4 each represents a hydrogen atom or an alkyl group or an alkoxy group; X.sup.31 represents an anion; and Y represents --NH--, --O-- or --S--. The diazo resin is useful for a presensitized plate for use in making a lithographic printing plate when it is incorporated into a light-sensitive layer or an underlayer on a substrate. According to the present invention, a presensitized plate using the diazo resin has excellent properties such as high sensitivity, good adhesion between the substrate and the light-sensitive layer and can thus provide a lithographic printing plate having a high printing durability and free of background contamination.

公开(公告)号：US5064741A

公开(公告)日：1991-11-12

申请号：US532238

申请日：1990-06-04

申请人： Akinobu Koike ,  Yukio Abe ,  Koichi Kawamura

发明人： Akinobu Koike ,  Yukio Abe ,  Koichi Kawamura

IPC分类号： G03C1/00 ,  G03C1/675 ,  G03C1/695 ,  G03F7/105

CPC分类号： G03C1/675 ,  G03F7/105 ,  Y10S430/121

摘要： A light-sensitive composition is herein disclosed, which comprises at least one free radical generator represented by the following general formula: ##STR1## and at least one discoloring agent which interacts with products generated through the photolytic degradation of the free radical generator to change the color tone of the composition. The composition has a high stability with time and a good printing out property and therefore it can be used in making light-sensitive layer of PS plates, photoresists, proof plates for printing and films for overhead projector, intermediate print and photomask having high sensitivity long shelf life.

摘要翻译： 本文公开了一种光敏组合物，其包含至少一种由以下通式表示的自由基产生剂：至少一种与通过自由基发生剂的光解降解产生的产物相互作用的变色剂 改变组合物的色调。 该组合物具有高的时间稳定性和良好的印刷性能，因此可用于制造PS板，光致抗蚀剂，印刷用防伪板和高架投影仪的光敏层，具有高灵敏度长的中间印刷和光掩模的感光层 保质期。

公开(公告)号：US4576893A

公开(公告)日：1986-03-18

申请号：US622597

申请日：1984-06-20

申请人： Eiji Nakakita ,  Akinobu Koike ,  Toshiyuki Sekiya ,  Hiroshi Misu ,  Nobuyuki Kita

发明人： Eiji Nakakita ,  Akinobu Koike ,  Toshiyuki Sekiya ,  Hiroshi Misu ,  Nobuyuki Kita

IPC分类号： G03F7/004 ,  G03C1/52 ,  G03F7/016 ,  G03F7/021 ,  G03C1/60 ,  G03F7/08

CPC分类号： G03F7/0212 ,  G03F7/0166

摘要： A presensitized lithographic printing plate precursor is described, comprising an aluminum support that has been rendered hydrophilic having provided thereon a light-sensitive layer composed of a light-sensitive composition comprising (1) an organic solvent-soluble and substantially water-insoluble diazo resin, (2) a substantially water-insoluble, film-forming polymeric compound, and at least one of (3a) an organic solvent-soluble polymeric compound having a sulfonic acid group or a sulfonic acid salt group in its side chain and (3b) a substituted or unsubstituted dipicolinic acid or a salt thereof, the total amount of (3a) and (3b) components being about 1 to about 100% by weight, based on the weight of the diazo resin.

摘要翻译： 描述了一种预敏化的平版印刷版原版，其包括具有亲水性的铝载体，其上设置有由感光性组合物构成的感光层，所述感光组合物包含（1）有机溶剂可溶并基本上不溶于水的重氮树脂， （2）基本上不溶于水的成膜聚合物，和（3a）在其侧链中具有磺酸基或磺酸盐基团的有机溶剂可溶性高分子化合物中的至少一种，（3b）a 取代或未取代的二吡啶甲酸或其盐，基于重氮树脂的重量，（3a）和（3b）组分的总量为约1至约100重量％。