公开(公告)号：US5393625A

公开(公告)日：1995-02-28

申请号：US181243

申请日：1994-01-13

申请人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

发明人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

IPC分类号： C08F8/00 ,  C08K3/22 ,  G03G5/05 ,  G03G5/06 ,  G03G5/08 ,  G03G5/087 ,  G03G5/09 ,  G03G13/28

CPC分类号： G03G5/0589 ,  C08F8/00 ,  C08K3/22

摘要： Disclosed is electrophotolithographic plate precursor having on a conductive support at least one photoconductive layer containing at least a random copolymer binder resin (P) (i) having a weight average molecular weight of from 5.times.10.sup.4 to 5.times.10.sup.5, (ii) comprising (a) a polymer component comprising particular methacrylate or acrylate monomers, (b) a polymer component containing at least one particular polar group and (c) a polymer component having a Fedors' solution parameter of 9.0 or more and containing at least a particular aprotic polar group, and (iii) having at least a particular polar group at one end of the main chain of the copolymer. The plate precursor may be etched with a combination of an etchant and a wetting water both having no problem in the environmental sanitation, to be formed into an offset printing plate not generating background staining. The printing plate has high printing durability and has excellent rubbing resistance.

摘要翻译： 公开了电子照相平版印刷版原版，其在导电载体上具有至少一个光导电层，其至少含有重均分子量为5×10 4至5×10 5的无规共聚物粘合剂树脂（ⅰ），（ⅱ）包含（a）聚合物 包含特定的甲基丙烯酸酯或丙烯酸酯单体的组分，（b）含有至少一个特定极性基团的聚合物组分和（c）具有9.0或更高的Fedors溶液参数并且至少含有特定非质子极性基团的聚合物组分和（ iii）在共聚物的主链的一端具有至少一个特定的极性基团。 可以用环境卫生中没有问题的蚀刻剂和润湿水的组合来蚀刻板前体，以形成不产生背景染色的胶版印刷版。 该印版具有高的印刷耐久性并且具有优异的耐摩擦性。

公开(公告)号：US5382488A

公开(公告)日：1995-01-17

申请号：US64056

申请日：1993-05-18

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G5/05 ,  G03G5/087 ,  G03G5/09

CPC分类号： G03G5/0589 ,  G03G5/0592

摘要： An electrophotographic light-sensitive material which has improved electrostatic characteristics and image forming performance and is excellent particularly in reproducibility of highly accurate image using a liquid developer and image forming performance upon a scanning exposure system using a laser beam of a low power.The electrophotographic light-sensitive material contains, as a binder resin, a low molecular weight resin (A) comprising an organic molecule having bonded thereto at least three polymer chains each containing a polymer component of formula (I) and a polymer component having a specified polar group, and a resin (B) which is a medium to high molecular weight AB block copolymer comprising an A block containing a specified polar group and a B block containing a polymer component of formula (I). ##STR1## wherein a.sup.1 and a2: hydrogen, halogen, a cyano group, a hydrocarbon group, --COOR.sup.4 or --COOR.sup.4 bonded via a hydrocarbon group (R.sup.4 : hydrocarbon group); and R.sup.3 : a hydrocarbon group.

摘要翻译： PCT No.PCT / JP92 / 01194 Sec。 371日期：1993年5月18日 102（e）日期1993年5月18日PCT PCT日期为1992年9月18日。具有改善的静电特性和成像性能并且特别是使用液体显影剂的高精度图像的再现性和成像性能优异的电子照相感光材料 在使用低功率的激光束的扫描曝光系统上。 电子照相感光材料包含作为粘合剂树脂的低分子量树脂（A），其包含键合有至少三个聚合物链的有机分子，每个聚合物链均含有式（I）的聚合物组分和具有指定的聚合物组分的聚合物组分 和含有特定极性基团的A嵌段和含有式（I）的聚合物成分的B嵌段的中高分子量AB嵌段共聚物的树脂（B）。 式（I）其中a1和a2：通过烃基键合的氢，卤素，氰基，烃基，-COOR4或-COOR4（R4：烃基）; 和R3：烃基。

公开(公告)号：US5338628A

公开(公告)日：1994-08-16

申请号：US945717

申请日：1992-09-15

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G5/05 ,  G03G15/08

CPC分类号： G03G5/0592 ,  G03G5/0589

摘要： An electrophotographic light-sensitive material comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive substance, a spectral sensitizing dye and a binder resin, wherein the binder resin comprises at least one resin (A) and at least one resin (B) as described in the specification.

摘要翻译： 一种电子照相感光材料，包括其上设置有至少一个含有无机光电导性物质的感光层，光谱增感染料和粘合剂树脂的载体，其中粘合剂树脂包括至少一种树脂（A）和至少一种树脂（ B）。

公开(公告)号：US5254422A

公开(公告)日：1993-10-19

申请号：US725113

申请日：1991-07-03

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G5/05 ,  G03G13/28 ,  G03G5/00

CPC分类号： G03G5/0589 ,  G03G5/0592 ,  Y10S430/106

摘要： An electrophotographic lithographic printing plate precursor which utilizes an electrophotographic light-sensitive material comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein the binder resin contains at least one graft-type copolymer comprising at least (1) a monofunctional monomer containing a functional group which has at least one atom selected from a fluorine atom and a silicon atom and is capable of forming at least one hydrophilic group selected from a sulfo group, a phosphono group, a carboxy group and a hydroxy group through decomposition, and (2) a monofunctional macromonomer which has a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4, and has a polymerizable double bond group represented by the general formula (I) described herein bonded to only one terminal of the main chain thereof.

公开(公告)号：US5252419A

公开(公告)日：1993-10-12

申请号：US704248

申请日：1991-05-22

申请人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

发明人： Eiichi Kato ,  Seishi Kasai ,  Kazuo Ishii

IPC分类号： C08L33/04 ,  C08L33/06 ,  C08L51/00 ,  C08L101/00 ,  C09J151/00 ,  G03G5/05 ,  G03G5/08 ,  G03G5/087 ,  G03G5/09 ,  G03G13/28

CPC分类号： G03G5/0592 ,  G03G5/0589

摘要： An electrophotographic light-sensitive material comprising a support having provided thereon a photoconductive layer containing at least an inorganic photoconductive substance, a spectral sensitizer and a binder resin, wherein the binder resin contains (1) at least one resin (Resin (A)) which contains at least 30% by weight of a polymer component represented by the general formula (I) and a polymer component containing at least one acidic group selected from ##STR1## (wherein R represents a hydrocarbon group or --OR') and a cyclic acid anhydride-containing group, and which has at least one acidic group selected from the above-mentioned acidic groups at one terminal of the main chain of the copolymer; ##STR2## and (2) at least one graft type copolymer (Resin (B)) formed from at least one monofunctional macromonomer (M) and comprising an AB block copolymer composed of an A block comprising at least one polymer component containing at least one acidic group selected from ##STR3## and a cyclic acid anhydride-containing group, and a B block containing at least one polymer component represented by the general formula (III) having a polymerizable double bond group bonded to the terminal of the main chain of the B block polymer. ##STR4## X.sub.1 represents ##STR5## and R.sub.21 represents a hydrocarbon group, provided that, when X.sub.1 represents ##STR6## R.sub.21 represents a hydrogen atom or a hydrocarbon group.

摘要翻译： 一种电子照相感光材料，包括其上设置有至少含有无机光电导性物质，光谱增感剂和粘合剂树脂的光电导层的载体，其中所述粘合剂树脂含有（1）至少一种树脂（Resin（A）），所述树脂 含有至少30重量％的由通式（I）表示的聚合物组分和含有至少一个选自以下的酸性基团的聚合物组分（其中R表示烃基或-OR'）和环状酸 含酸酐基团，并且在共聚物的主链的一个末端具有至少一个选自上述酸性基团的酸性基团; （I）和（2）由至少一种单官能大分子单体（M）形成的至少一种接枝型共聚物（树脂（B）），其包含由包含至少一种含有 至少一个选自的酸性基团和含环状酸酐的基团，以及含有至少一个由通式（III）表示的聚合物组分的B嵌段，该聚合物组分具有键合到主体的末端的可聚合双键基团 B嵌段聚合物链。 （III）X1表示 ，R21表示烃基，条件是当X 1表示R 21表示氢原子或烃基时。

公开(公告)号：US5178982A

公开(公告)日：1993-01-12

申请号：US570653

申请日：1990-08-21

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： C08F290/04 ,  C08F290/06 ,  C08L55/00 ,  G03G5/05

CPC分类号： G03G5/0592 ,  C08F290/04 ,  C08F290/061 ,  C08L55/005 ,  G03G5/0589

摘要： An electrophotographic light-sensitive material comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive substance and a binder resin, wherein the binder resin comprises at least (A) a low-molecular weight resin (resin A) of a graft copolymer formed from at least a monofunctional macromonomer (MA) and a monomer represented by the general formula (III) (monomer A), and having a specific acidic group bonded to only one terminal of the polymer main chain, and (B) a high-molecular weight resin (resin B) of a graft copolymer formed from at least one polyester type macromonomer (MB) represented by general formula (VIa), (VIb), (VIc) and (VId), wherein all the formulas are as defined in the specification. In a preferred embodiment the high-molecular weight resin (B) has at least one acidic group at the terminal of the main chain of the polymer. The electrophotographic light-sensitive material exhibits excellent electrostatic characteristics and mechanical strength even under severe conditions, and is advantageously employed in a scanning exposure system using a semiconductor laser beam.

摘要翻译： 一种电子照相感光材料，其包含在其上设置有至少一层含有无机光电导性物质和粘合剂树脂的光电导层的载体，其中所述粘合剂树脂至少包含（A）接枝的低分子量树脂（树脂A） 共聚物由至少单官能大单体（MA）和由通式（III）表示的单体（单体A）形成，并且具有仅与聚合物主链的一个末端键合的特定酸性基团，和（B）高 由通式（VIa），（VIb），（VIc）和（VId）表示的至少一种聚酯型大分子单体（MB）形成的接枝共聚物的分子量树脂（树脂B），其中所有式如上所定义 在规范中。 在优选的实施方案中，高分子量树脂（B）在聚合物主链的末端具有至少一个酸性基团。 电子照相感光材料即使在苛刻条件下也表现出优异的静电特性和机械强度，并且有利地用于使用半导体激光束的扫描曝光系统中。

公开(公告)号：US5110701A

公开(公告)日：1992-05-05

申请号：US521956

申请日：1990-05-11

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： C08K3/22 ,  G03G5/05

CPC分类号： G03G5/0592 ,  C08K3/22 ,  G03G5/0589

摘要： An electrophotograhic light-sensitive material comprising a support having thereon a photoconductive layer containing at least inorganic photoconductive particles and a binder resin is disclosed, wherein the binder resin contains (A) at least one resin comprising a graft copolymer having a weight average molecular weight of from 1.0.times.10.sup.3 to 2.0.times.10.sup.4 and containing, as a copolymer component, at least one of polyester type macromonomers having a weight average molecular weight of from 1.0.times.10.sup.3 to 1.5.times.10.sup.4.

摘要翻译： 公开了一种电子照相感光材料，其包括其上具有至少含有无机光导电颗粒和粘合剂树脂的光电导层的载体，其中所述粘合剂树脂含有（A）至少一种树脂，其包含重均分子量为 从1.0×10 3至2.0×10 4，并且含有作为共聚物组分的至少一种重均分子量为1.0×10 3至1.5×10 4的聚酯型大分子单体。

公开(公告)号：US5082759A

公开(公告)日：1992-01-21

申请号：US421570

申请日：1989-10-11

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G9/13

CPC分类号： G03G9/133 ,  G03G9/131

摘要： A liquid developer for electrostatic photography comprising resin particles dispersed in a non-aqueous solvent whose electrical resistance is at least 10.sup.9 .OMEGA..multidot.cm and whose the dielectric constant is not more than 3.5, wherein said dispersed resin particles are obtained by polymerizing a solution containingat least one monofunctional monomer (A) which is soluble in said non-aqueous solvent, but is rendered insoluble by polymerization andat least one monomer (B) represented by general formula (II) which has at least two polar groups and/or polar linking groups, in the presence of a resin for dispersion stabilization purposes which has a polymerizable double bond containing group which can copolymerize with the monofunctional monomer (A) at only one end of the main chain of a polymer containing at least one repeating unit which can be represented by the general formula (I): ##STR1##

摘要翻译： 一种用于静电摄影的液体显影剂，其包含分散在电阻至少为10欧米亚×厘米并且介电常数不大于3.5的非水溶剂中的树脂颗粒，其中所述分散的树脂颗粒通过聚合至少包含至少 一种可溶于所述非水溶剂但通过聚合而不溶的单官能单体（A）和至少一种具有至少两个极性基团和/或极性连接基团的通式（II）表示的单体（B） 在具有可聚合双键的基团的存在下，在仅含有至少一个可表示的重复单元的聚合物的主链的一端可与单官能单体（A）共聚的基团， （I）的通式（I）：（I）＆lt; IMAGE＆gt;（II）

公开(公告)号：US5077166A

公开(公告)日：1991-12-31

申请号：US545027

申请日：1990-06-28

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G5/05

CPC分类号： G03G5/0589

摘要： An electrophotographic light-sensitive material comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive substance and a binder resin, wherein the binder resin comprises (A) at least one resin having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and containing not less than 30% by weight of a copolymerizable component corresponding to a repeating unit represented by the general formula (I) and from 0.5 to 20% by weight of a copolymerizable component having at least one acidic group selected from the group consisting of --PO.sub.3 H.sub.2, --SO.sub.3 H, --COOH, --OH, ##STR1## and (B) at least one copolymer resin having a weight average molecular weight of from 3.times.10.sup.4 to 1.times.10.sup.6 and containing at least one polyester type macromonomer having a weight average molecular weight of from 1.times.10.sup.3 to 1.5.times.10.sup.4.

公开(公告)号：US5063130A

公开(公告)日：1991-11-05

申请号：US491018

申请日：1990-03-09

申请人： Eiichi Kato ,  Kazuo Ishii

发明人： Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G5/05

CPC分类号： G03G5/0592 ,  G03G5/0589

摘要： An electrophotographic light-sensitive material is disclosed. The light-sensitive material comprises an electroconductive support having formed thereon a photoconductive layer containing at least inorganic photoconductive particles and a binder resin, wherein the binder resin containing a copolymer having at least one of polyester type macromonomers having a weight average molecular weight of from 1.times.10.sup.3 to 1.5.times.10.sup.4 represented by the formulae (I), (II), (III), and (IV) as defined in the specification. The electrophotographic light-sensitive material according to the present invention has excellent electrostatic characteristics, moisture resistance and durability.

摘要翻译： 公开了一种电子照相感光材料。 感光材料包括其上形成有至少含有无机光电导颗粒和粘合剂树脂的光电导层的导电载体，其中含有共聚物的粘合剂树脂具有至少一种重均分子量为1×10 3的聚酯型大分子单体 （I），（II），（III）和（IV）表示的1.5×10 4〜1.5×10 4。 根据本发明的电子照相感光材料具有优异的静电特性，耐湿性和耐久性。