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公开(公告)号：US5543258A
公开(公告)日：1996-08-06
申请号：US263738
申请日：1994-06-22
摘要： An original form for electrophotographic planography includes a paper support having thereon a photoconductive layer including a photoconductive material including at least zinc oxide and a resin binder, the exposure percentage of the zinc oxide on a surface of the photoconductive layer being in the range of from 2.1 to 5%.
摘要翻译： 用于电子照相平版印刷的原始形式包括其上具有包括至少包含氧化锌和树脂粘合剂的光电导材料的光电导层的纸载体，所述光电导层的表面上的氧化锌的曝光百分比在2.1 至5％。
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公开(公告)号：US5424155A
公开(公告)日：1995-06-13
申请号：US983517
申请日：1993-04-21
申请人： Takao Nakayama , Shigeyuki Dan , Hidefumi Sera
发明人： Takao Nakayama , Shigeyuki Dan , Hidefumi Sera
摘要： The present invention aims at, in an electrophotographic lithographic printing plate precursor, improving the construction and composition of back layers and in particular, preventing occurrence of printing scum by rubbing and increasing the number of prints until printing wrinkles occur. The feature of the present invention consists in an electrophotographic lithographic printing plate precursor comprising, at least, a photoconductive layer on one surface of a base and a back layer on the other surface thereof, in which the back layer comprises an outermost layer containing a hydrophilic high molecular material and an innerlayer having a Cobb's water absorbing capacity of at most 25 g/m.sup.2 (45 minute value).
摘要翻译： PCT No.PCT / JP92 / 00815 Sec。 371日期：1993年4月21日 102（e）日期1993年4月21日PCT提交1992年6月26日PCT公布。 出版物WO93 / 00615 日本1993年1月7日。本发明的目的在于，在电子照相平版印刷版原版中，改善背层的结构和组成，特别是通过摩擦和增加打印数量直到印刷皱纹发生时产生印刷浮渣 。 本发明的特征在于电子照相平版印刷版原版，其至少包括在基底的一个表面上的光电导层和在另一个表面上的背层，其中背层包括含有亲水性的最外层 高分子材料和Cobb吸水能力至多为25g / m 2（45分钟值）的内层。
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公开(公告)号：US5378564A
公开(公告)日：1995-01-03
申请号：US21682
申请日：1993-02-24
申请人： Takao Nakayama , Shigeyuki Dan , Hidefumi Sera
发明人： Takao Nakayama , Shigeyuki Dan , Hidefumi Sera
IPC分类号： G03G5/14
摘要： An electrophotographic lithographic printing plate precursor capable of well maintaining both the electrophotographic properties and the printing properties is provided, which comprises, at least, a photoconductive layer on one side of a support and an under layer directly under the photoconductive layer, in which the under layer consists of a plurality of layers comprising an outermost layer having a surface resistivity of at most 1.times.10.sup.11 .OMEGA. and an inner layer having a Cobb's water absorbing capacity of at most 15 g/m.sup.2 (45 minute value) or having a Young's Modulus of at most 1000 kg/cm.sup.2.
摘要翻译： 提供了能够良好地保持电子照相特性和印刷性能的电子照相平版印刷版原版，其至少包括在载体的一侧上的光电导层和直接在光电导层下的下层，其中下 层包括多个层，其包含具有至多1×10 11欧米茄的表面电阻率的最外层和具有至多15g / m 2（45分钟值）的Cobb吸水能力或至多具有至多杨氏模量的内层 1000 kg / cm2。
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公开(公告)号：US4837102A
公开(公告)日：1989-06-06
申请号：US94612
申请日：1987-09-09
申请人： Shigeyuki Dan , Eiichi Kato , Kazuo Ishii , Hiroshi Ishibashi , Hidefumi Sera
发明人： Shigeyuki Dan , Eiichi Kato , Kazuo Ishii , Hiroshi Ishibashi , Hidefumi Sera
IPC分类号： G03G9/13
CPC分类号： G03G9/131 , G03G9/133 , Y10S430/105
摘要： A liquid developer for electrostatic photography comprising a carrier medium having an electrical resistivity of not less than 10.sup.9 106.cm and a dielectric constant of not more than 3.5 having dispersed therein at least a resin, wherein said resin is a copolymer resin obtained by copolymerizing (1) a solution containing at least one copolymer having an unsaturated bond obtained by copolymerizing at least one monomer (A) represented by formula (I) shown below and at least one monomer (B) represented by formula (II) shown below, and reacting the resulting copolymer with at least one monomer (C) represented by formula (III) shown below, (2) at least one monomer (D) which is soluble in the carrier medium but becomes insoluble upon polymerization, and (3) at least one monomer (E) represented by formula (IV) shown below to obtained a resin dispersion: ##STR1## wherein a.sub.1, a.sub.2 a.sub.3, b.sub.1, b.sub.2, b.sub.3, d.sub.1, d.sub.2, d.sub.3, e.sub.1, e.sub.2, e.sub.3, X, Y, V, Z, L, F, Q, G, R.sub.1, R.sub.2, R.sub.3, T.sub.1, T.sub.2, U, m and n are defined in the specification. The developer is excellent in redispersibility, preservability, stability, image reproducibility, and fixing properties and is capable of producing a master plate for offset printing having excellent printing durability.
摘要翻译： 一种静电摄影用液体显影剂，其特征在于，具有电阻率为109×106.cm以上且介电常数不超过3.5的载体介质，其中至少分散有树脂，其中所述树脂是通过共聚（ 1）含有至少一种具有不饱和键的共聚物的溶液，其通过使至少一种由下述式（I）表示的单体（A）和至少一种如下所示的式（II）表示的单体（B）共聚而获得， 所得共聚物与至少一种由下式（III）表示的单体（C），（2）至少一种可溶于载体介质但在聚合时变得不溶的单体（D），和（3）至少一种 （IV）其中a1，a2 + L，a3（Ⅳ）表示的单体（E），以获得树脂分散体：（ⅰ） ，b1，b2，b3，d1，d2，d3，e1，e2，e3，X，Y，V，Z，L，F，Q，G，R1，R2，R 3，T1，T2，U，m和n在说明书中定义。 显影剂具有优异的再分散性，保存性，稳定性，图像再现性和定影性，并且能够制造具有优异印刷耐久性的胶版印刷母板。
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公开(公告)号：US4618557A
公开(公告)日：1986-10-21
申请号：US763112
申请日：1985-08-07
申请人： Shigeyuki Dan , Kazuo Ishii , Eiichi Kato , Hidefumi Sera
发明人： Shigeyuki Dan , Kazuo Ishii , Eiichi Kato , Hidefumi Sera
CPC分类号： G03G9/131
摘要： An liquid developer for electrostatic photography is described, comprising a carrier liquid having an electric resistance of at least 10.sup.9 .OMEGA..multidot.cm and a dielectric constant of not more than 3.5, and a resin dispersed therein, said resin being obtained by polymerizing a monomer, which is soluble in said carrier liquid but becomes insoluble upon being polymerized, in the presence of at least one kind of a soluble dispersion stabilizing resin, said soluble dispersion stabilizing resin being a copolymer containing at least recurring units represented by following formulae (IIIa) and (IIIb) obtained by applying a reaction for introducing an unsaturated bond into a copolymer obtained by polymerizing a monomer represented by formula (I) and a monomer represented by formula (III) ##STR1## wherein in formula (I), V represents --O--, --S--, --CO--, --CO.sub.2 --, --SO.sub.2 --, --OCO--, --CONH--, --CONR'-- (wherein R' represents a hydrocarbon group), --NHCO--, NHCO.sub.2 --, or --NHCONH--; X represents --CO.sub.2 H, --COCl, --OH, --SH, --NH.sub.2, --NCO, or --SO.sub.2 CH.sub.2 CH.sub.2 Cl; W represents a hydrocarbon group linking said atomic group V and said atomic group X directly or through a hetero atom, or W represents a chemical bond; and a.sub.1, a.sub.2, and a.sub.3 each represents a hydrogen atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group;in formula (II), Y represents --O--, --S--, --CO--, --CO.sub.2 --, --SO.sub.2 --, --OCO--, CONH--, --CONR"-- (wherein R" represents a hydrocarbon group), --NHCO--, --NHCO.sub.2 --, or --NHCONH--; R represents a hydrocarbon group; and b.sub.1, b.sub.2, and b.sub.3 each represents a hydrocarbon atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group;in formula (IIIa), a.sub.1, a.sub.2, a.sub.3, V, and W have the same meanings as defined for formula (I); X' represents --CO.sub.2 --, --COS--, --SCO--, --CONH--, --OCO--, --NHCO--, --NHCONH--, --SO.sub.2 --, --O--, or --S--; Z represents a hydrocarbon group linking said atomic group X' and unsaturated bond directly or through a hetero atom, or Z represents a chemical bond; the total number of atoms of the main chain portion of atomic group --V--W--X'--Z-- must, however, be at least 9; and d.sub.1, d.sub.2, and d.sub.3 each represents a hydrocarbon atom, a hydrocarbon group, a carboxy group, or a carboxy group through a hydrocarbon group; andin formula (IIIb), b.sub.1, b.sub.2, b.sub.3, Y, and R have the same meanings as defined for formula (II).
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公开(公告)号：US4842975A
公开(公告)日：1989-06-27
申请号：US136517
申请日：1987-12-22
申请人： Eiichi Kato , Kazuo Ishii , Hiroshi Ishibashi , Shigeyuki Dan , Hidefumi Sera
发明人： Eiichi Kato , Kazuo Ishii , Hiroshi Ishibashi , Shigeyuki Dan , Hidefumi Sera
CPC分类号： G03G9/131
摘要： A liquid developer for electrostatic photography is described, comprising at least a resin dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 ohms.cm and a dielectric constant of not more than 3.5. The resin is a copolymer resin obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble upon polymerization and at least one specified monomer (B) containing an aliphatic group having at least 8 carbon atoms and being copolymerizable with the monomer (A), in the presense of a resin not containing a grafting group polymerizable with the monomers and being soluble in the non-aqueous solvent. The resin may be colored by dissolving at least one organic dye in the dispersion of the resin and heating the mixture. The developer has excellent dispersion stability, redispersibility, fixability and preservability.
摘要翻译： 描述了用于静电摄影的液体显影剂，其至少包含分散在电阻至少为109欧姆·厘米且介电常数不大于3.5的非水溶剂中的树脂。 树脂是通过聚合含有至少一种可溶于非水溶剂但在聚合时变得不溶的单官能单体（A）的溶液和至少一种含至少一个具有至少一个脂族基团的特定单体（B）的溶液而获得的共聚物树脂 8个碳原子并且可与单体（A）共聚，在不含可与单体聚合并可溶于非水溶剂的接枝基团的树脂的存在下。 树脂可以通过将至少一种有机染料溶解在树脂的分散体中并加热混合物而着色。 显影剂具有优异的分散稳定性，再分散性，定影性和保存性。
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公开(公告)号：US4665002A
公开(公告)日：1987-05-12
申请号：US772794
申请日：1985-09-05
申请人： Shigeyuki Dan , Kazuo Ishii , Eiichi Kato , Hidefumi Sera
发明人： Shigeyuki Dan , Kazuo Ishii , Eiichi Kato , Hidefumi Sera
CPC分类号： G03G9/131 , Y10S430/105
摘要： Disclosed is a liquid electrophotographic developer comprising a resin prepared by polymerizing selected monomers to provide a developer composition having good storage stability and redispersibility.
摘要翻译： 公开了包含通过聚合所选单体制备的树脂以提供具有良好的储存稳定性和再分散性的显影剂组合物的液体电子照相显影剂。
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公开(公告)号：US5665499A
公开(公告)日：1997-09-09
申请号：US712847
申请日：1996-09-12
申请人： Shigeyuki Dan , Takao Nakayama
发明人： Shigeyuki Dan , Takao Nakayama
CPC分类号： G03G15/758 , G03G13/10 , G03G13/28 , G03G5/10 , G03G5/104
摘要： An electrophotographic printing plate precursor having satisfactory mechanical strength and water-resistance and suitable to the direct electrical supply system, and a method for development thereof are disclosed.The electrophotographic printing plate precursor comprises an electrically conductive support having thereon a photoconductive layer and a back layer, the back layer being provided on the surface of the support opposite to the photoconductive layer, wherein the back layer comprises at least an outermost layer having a surface resistivity of from 1.times.10.sup.10 to 1.times.10.sup.14 .OMEGA. and an inner layer having a surface resistivity of less than 1.times.10.sup.10 .OMEGA..
摘要翻译： 公开了具有令人满意的机械强度和耐水性并且适合于直接供电系统的电照相印版前体及其制备方法。 电子照相印版前体包括其上具有光电导层和背层的导电载体，背层设置在与光电导层相对的载体的表面上，其中背层至少包括具有表面的最外层 电阻率为1×10 10至1×10 14欧米茄，内层的表面电阻率小于1×10 10欧米茄。
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公开(公告)号：US6022654A
公开(公告)日：2000-02-08
申请号：US168135
申请日：1998-10-07
CPC分类号： G03G13/02 , G03G13/28 , G03G5/10 , Y10S430/102
摘要： Disclosed is a process for producing a lithographic printing plate using a lithographic printing plate precursor comprising a support having a volume resistivity of more than 1.times.10.sup.10 .OMEGA..cm, an electrically conductive layer provided on one surface of the support and having a volume resistivity of 1.times.10.sup.5 .OMEGA..cm or less and a photoconductive layer provided on the electrically conductive layer and containing zinc oxide and a binder, the process comprising applying negative corona discharge to the lithographic printing plate precursor from the photoconductive layer side and at this discharging, contacting an electric conductor having an earth potential at least with the support of the lithographic printing plate precursor to electrically charging the photoconductive layer of the lithographic printing plate precursor.
摘要翻译： 公开了一种使用平版印刷版前体制备平版印刷版的方法，该平版印刷版前体包含体积电阻率大于1×10 10欧姆·厘米的载体，导电层设置在载体的一个表面上，体积电阻率为1×10 5欧米茄 cm以下的光电导层和设置在导电层上并含有氧化锌和粘合剂的光电导层，该方法包括从光电导层侧向平版印刷版前体施加负电晕放电，并且在该放电时，使具有 至少在平版印刷版原版的支持下，对平版印刷版原版的光导电层进行充电的地电位。
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公开(公告)号：US06207332B1
公开(公告)日：2001-03-27
申请号：US08988282
申请日：1997-12-10
IPC分类号： G03G1302
CPC分类号： G03G13/28 , G03G5/10 , G03G13/02 , Y10S430/102
摘要： A process for producing a lithographic printing plate which is inexpensive, is not elongated, can be readily handled and can provide a uniform image, is disclosed. The process comprises the steps of: using an original plate for lithographic printing comprising a support having a volume electric resistance of more than 1×1010 &OHgr;·cm, a conductive layer having a volume electric resistance of 1×105 &OHgr;·cm or less, provided on one surface of the support, and a photoconductive layer containing zinc oxide and a binder, provided on the conductive layer, conducting negative corona discharge from the side of the photoconductive layer of the original plate for lithographic printing, and during this corona discharge, contacting a conductor having earth potential with at least the support of the original plate, thereby charging the photoconductive layer of the original plate for lithographic printing.
摘要翻译： 公开了一种制造廉价的未拉伸的平版印刷版的方法，可以容易地处理并且可以提供均匀的图像。 该方法包括以下步骤：使用原版平版印刷，其中包括体积电阻大于1×10 10欧米汞厘米的载体，具有体积电阻为1×10 5欧姆·厘米或更小的导电层，设置在一个表面上 的载体和包含氧化锌和粘合剂的光电导层，设置在导电层上，从用于平版印刷的原版的光电导层侧进行负电晕放电，并且在该电晕放电期间，接触具有接地的导体 至少具有原版支撑的电位，从而对原版的光电导层充电以进行平版印刷。
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