公开(公告)号：US5298357A

公开(公告)日：1994-03-29

申请号：US856726

申请日：1992-03-24

申请人： Hideyuki Hattori ,  Eiichi Kato ,  Kazuo Ishii

发明人： Hideyuki Hattori ,  Eiichi Kato ,  Kazuo Ishii

IPC分类号： G03G9/12 ,  G03G9/125 ,  G03G9/13 ,  G03G13/10 ,  G03G9/135

CPC分类号： G03G9/131 ,  G03G9/125

摘要： A liquid developer for electrostatic photography which comprises a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA..multidot.cm and a dielectric constant of not higher than 3.5, at least toner grains comprising a resin as a main component, and (a) at least one compound (A) having an effect for increasing the amount of charge and (b) at least one compound (B) having an effect for reducing the amount of charge. There is also disclosed a duplicating method using a liquid developer as described above, which is useful for developing a large number of electrophotographic materials over a long period of time.

摘要翻译： 一种用于静电摄影的液体显影剂，其包括至少具有至少109（Ω）* cm的电阻和介电常数不高于3.5的非水溶剂，至少包含树脂作为主要成分的调色剂颗粒和（ a）至少一种具有增加电荷量的作用的化合物（A）和（b）至少一种具有减少电荷量的化合物（B）。 还公开了使用如上所述的液体显影剂的复制方法，其可用于长时间显影大量电子照相材料。

公开(公告)号：US5041352A

公开(公告)日：1991-08-20

申请号：US473535

申请日：1990-02-01

申请人： Eiichi Kato ,  Kazuo Ishii ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Kazuo Ishii ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/131 ,  G03G9/133

摘要： A liquid developer for electrostatic photography comprising a resin dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA.cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin is a polymer resin obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the aforesaid non-aqueous solvent but become insoluble after being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the aforesaid non-aqueous solvent and at least one oligomer (B) having a number average molecular weight of not more than 1.times.10.sup.4 and having at least one polar group selected from a carboxy group, a sulfo group, a hydroxy group, a formyl group, an amino group, a phosphono group, and ##STR1## wherein R.sup.0 represents a hydrocarbon group or --OR.sup.1, (wherein R.sup.1 represents a hydrocarbon group) bonded to only one terminal of the main chain of a polymer composed of a recurring unit represented by following formula (II): ##STR2## wherein V.sup.1, R.sup.2, a.sup.1 and a.sup.2 are as defined in the specification. The liquid developer is excellent in dispersion stability, re-dispersibility, and fixability, and also is capable of forming an offset printing plate having excellent ink-receptivitiy for printing ink and excellent printing durability by electrophotography.

摘要翻译： 一种用于静电照相的液体显影剂，其包含分散在电阻至少为10 9Ω·cm，介电常数不高于3.5的非水溶剂中的树脂，其中所述分散树脂是通过聚合含有 至少一种在可溶于上述非水溶剂的分散稳定树脂和至少一种低聚物的存在下，其可溶于前述非水溶剂但在聚合后变得不溶的单官能单体（A） B）数均分子量不大于1×10 4，并且具有至少一个选自羧基，磺基，羟基，甲酰基，氨基，膦酰基的极性基团， 其中R 0表示烃基或-OR 1（其中R 1表示烃基），其仅与由以重复单元表示的重复单元组成的聚合物的主链的仅一个末端键合 下式（II）：其中V1，R2，a1和a2如说明书中所定义。 液体显影剂的分散稳定性，再分散性和定影性优异，并且还能够形成具有优异的用于印刷油墨的油墨接受性和通过电子照相术获得优异印刷耐久性的胶版印刷版。

公开(公告)号：US4977055A

公开(公告)日：1990-12-11

申请号：US454830

申请日：1989-12-22

申请人： Eiichi Kato ,  Kazuo Ishii ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Kazuo Ishii ,  Hideyuki Hattori

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 resin dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 .OMEGA.cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin is a polymer resin obtained by polymerizing a solution containing at least one mono-functional monomer (A) which is soluble in the aforesaid non-aqueous solvent but becomes insoluble after being polymerized, in the presence of at least one resin which is soluble in the aforesaid non-aqueous solvent and does not have a graft group polumerizable with the monomer and at least one oligomer (B) having a number average molecular weight of not more than 1.times.10.sup.4 and having at least one polar group selected from a carboxy group, a sulfo group, a hydroxy group, a formyl group, an amino group, a phosphono group, and ##STR1## wherein R.sup.0 represents a hydrocarbon group or --OR.sup.1, (wherein R.sup.1 represents a hydrocarbon group) bonded to one terminal only of the main chain of a polymer composed of a recurring unit represented by following formula (I): ##STR2## wherein V.sup.1, R.sup.2, a.sup.1 and a.sup.2 are as defined in the specification.The liquid developer is excellent in dispersion stability, re-dispersibilty, and fixability, and also is capable of forming an offset printing plate having excellent ink-receptivity for printing ink and excellent printing durability by electrophotography.

摘要翻译： 一种用于静电照相的液体显影剂，其包含分散在电阻至少为10 9Ω·cm，介电常数不高于3.5的非水溶剂中的树脂，其中所述分散树脂是通过聚合含有 至少一种在上述非水溶剂中可溶的但不溶于聚合的单官能单体（A），在至少一种可溶于上述非水溶剂中的树脂存在下，并且不具有 可与单体共聚的接枝基团和至少一种数均分子量不超过1×10 4的低聚物（B），并且具有至少一个极性基团，选自羧基，磺基，羟基，甲酰基， 氨基，膦酰基和其中R 0表示烃基或-OR 1（其中R 1表示烃基）的键合在一个 由下式（I）表示的重复单元构成的聚合物：其中V1，R2，a1和a2如说明书中所定义。 液体显影剂的分散稳定性，再分散性和定影性优异，并且还能够形成对印刷油墨具有优异的油墨接受性和通过电子照相术具有优异的印刷耐久性的胶版印刷版。

公开(公告)号：US06539866B1

公开(公告)日：2003-04-01

申请号：US08888759

申请日：1997-07-07

申请人： Sadao Osawa ,  Eiichi Kato ,  Hiroyuki Ohishi ,  Kazuo Ishii

发明人： Sadao Osawa ,  Eiichi Kato ,  Hiroyuki Ohishi ,  Kazuo Ishii

IPC分类号： B41C110

CPC分类号： B41C1/1066

摘要： A process for preparing an ink-jet system printing plate, wherein in a planographic printing plate precursor having an image receiving layer containing zinc oxide and a binder resin on a water-resistant support, the surface of the image receiving layer has a water-contact angle of 50° or more, and image formation is carried out according to a hot melt type ink-jet system by heat melting an ink composition that is solid at ordinary temperature and spraying the droplets of the ink composition in a heat melt state from a nozzle onto the image receiving layer, and a nonimage area of the image receiving layer is then subjected to a desensitizing treatment by a chemical reaction to prepare a planographic printing plate.

摘要翻译： 一种制备喷墨系统印版的方法，其中在具有含有氧化锌和粘合剂树脂的图像接收层的平版印刷版原版中，在耐水载体上，图像接收层的表面具有水接触 角度为50°以上，根据热熔型喷墨系统，通过对常温下为固体的油墨组合物进行加热熔融，并从喷嘴喷射加热熔融状态的油墨组合物的液滴，进行图像形成 然后对图像接收层的非图像区域进行化学反应的脱敏处理以制备平版印刷版。

公开(公告)号：US06513434B1

公开(公告)日：2003-02-04

申请号：US09572433

申请日：2000-05-17

申请人： Yusuke Nakazawa ,  Kazuo Ishii ,  Eiichi Kato ,  Sadao Ohsawa

发明人： Yusuke Nakazawa ,  Kazuo Ishii ,  Eiichi Kato ,  Sadao Ohsawa

IPC分类号： B41C110

CPC分类号： B41J2/20 ,  B41C1/1066 ,  B41J2/06 ,  B41J2/175

摘要： An on-press recording type lithographic printing method involving an ink jet process which comprises ejecting an oil-based ink onto a printing plate material mounted on the plate cylinder of a press utilizing an electrostatic field according to signals of image data, whereby an image is directly formed on the surface of said printing plate precursor, thereby preparing a printing plate which is then used as it is to effect lithographic printing, characterized in that when any abnormality occurs, the formation of image is suspended and/or the cause of abnormality is removed.

摘要翻译： 包括喷墨方法的按压记录型平版印刷方法，其包括根据图像数据的信号，使用静电场将油性油墨喷射到安装在印刷机的印版滚筒上的印版上，从而图像是 直接形成在所述印版前体的表面上，从而制备印刷版，然后将其原样用于进行平版印刷，其特征在于，当发生任何异常时，图像的形成被暂停和/或异常的原因是 删除。

公开(公告)号：US06241341B1

公开(公告)日：2001-06-05

申请号：US09418656

申请日：1999-10-15

申请人： Yusuke Nakazawa ,  Kazuo Ishii ,  Eiichi Kato

发明人： Yusuke Nakazawa ,  Kazuo Ishii ,  Eiichi Kato

IPC分类号： B41J206

CPC分类号： B41J2/06 ,  B41J2002/061

摘要： An ink jet recording method comprising: supplying insulating oily ink to an ejection part disposed so as to face a recording medium; applying an electrostatic field to the ink at the ejection part; irradiating the ink subjected to the electrostatic field at the ejection part with light in accordance with image data so as to eject the ink to form an image on the recording medium; and recovering excess ink from the ejection part. Also disclosed is an ink jet recording apparatus suitable for the ink jet recording method.

摘要翻译： 一种喷墨记录方法，包括：向设置成面对记录介质的喷射部分供给绝缘油性油墨; 在喷射部分向油墨施加静电场; 根据图像数据用光照射在喷射部分处于静电场的墨水，以便喷射墨水以在记录介质上形成图像; 并从喷射部分回收多余的油墨。 还公开了适用于喷墨记录方法的喷墨记录装置。

公开(公告)号：US06184267B2

公开(公告)日：2001-02-06

申请号：US09009692

申请日：1998-01-20

申请人： Eiichi Kato ,  Sadao Osawa ,  Kazuo Ishii

发明人： Eiichi Kato ,  Sadao Osawa ,  Kazuo Ishii

IPC分类号： C09D1102

CPC分类号： C09D11/36 ,  G03G13/28 ,  G03G13/283

摘要： An oil-based ink for a printing plate by an ink jet process comprising spraying an oil-based ink comprising at least resin particles dispersed in a nonaqueous carrier liquid having an electric resistance of 109 &OHgr;cm or more and a dielectric constant of 3.5 or less on a water-resistant support having a lithographically printable hydrophilic surface to dropwise from a nozzle form an image, wherein the resin particles dispersed are polymer particles obtained by polymerization granulation of a solution comprising (i), (ii) and (iii): (i) at least one monofunctional monomer (A) which is soluble in a nonaqueous solvent which is at least miscible with the nonaqueous carrier liquid and becomes insoluble therein by polymerization; (ii) (ii-a) at least one monomer (B) which is copolymerizable with the monomer (A), or (ii-b) at least one monofunctional macromonomer (MA) having a weight average molecular weight of 2×104 or less in which a polymerizable double bond group is combined with only one end of a main chain of a polymer comprising a repeating unit corresponding to a monomer; and (iii) at least one resin for dispersion stabilization (P) which is a polymer comprising a repeating unit and is soluble in the nonaqueous solvent, the polymer being crosslinked at a part of its main chain thereof, and a method for preparing a printing plate by an ink jet process using the ink.

摘要翻译： 一种喷墨方法的印刷用油性油墨，其特征在于，喷涂含有至少分散在电阻为10 9Ω·cm以上且介电常数为3.5以下的非水性载体液中的树脂颗粒的油性油墨， 具有可喷墨亲水表面的防水支撑体从喷嘴形成图像，其中分散的树脂颗粒是通过聚合造粒包含（i），（ii）和（iii）的溶液获得的聚合物颗粒：（i ）至少一种单官能单体（A），其可溶于非水溶剂中，所述非水溶剂至少与非水性载体液体可混溶并通过聚合而不溶于其中; （ii）（ii-a）至少一种可与单体（A）共聚的单体（B）或（ii-b）至少一种重均分子量为2x104或更小的单官能大分子单体（MA） 其中可聚合双键基团仅与包含对应于单体的重复单元的聚合物主链的一端结合; 和（iii）至少一种用于分散稳定化的树脂（P），其是包含重复单元并且可溶于非水溶剂的聚合物，该聚合物在其主链的一部分被交联，以及制备印刷的方法 通过使用该油墨的喷墨处理来进行印版。

公开(公告)号：US5700612A

公开(公告)日：1997-12-23

申请号：US661723

申请日：1996-06-11

申请人： Eiichi Kato ,  Yusuke Nakazawa ,  Kazuo Ishii

发明人： Eiichi Kato ,  Yusuke Nakazawa ,  Kazuo Ishii

IPC分类号： G03G13/26 ,  G03G13/28

CPC分类号： G03G13/26 ,  G03G13/283

摘要： A method for preparation of a printing plate by an electrophotographic process comprising providing a peelable transfer layer (T) containing a resin (A) capable of being removed upon a chemical reaction treatment on an electrophotographic light-sensitive element, forming a toner image on the transfer layer by an electrophotographic process, providing an adhesive layer (M) containing a thermoplastic resin (B) only on the toner image, transferring the toner image together with the transfer layer (T) and the adhesive layer (M) from the electrophotographic light-sensitive element to a primary receptor, transferring the toner image together with the transfer layer (T) and the adhesive layer (M) from the primary receptor to a receiving material having a surface capable of providing a hydrophilic surface suitable for lithographic printing at the time of printing, and then removing the transfer layer (T) in the non-image portion on the receiving material by the chemical reaction treatment. According to the method of the present invention, printing plates which produce prints of good image qualities having a lage proportion of image areas can be continuously obtained in a stable manner for a long period of time even when a thickness of the transfer layer is reduced or the transfer is conducted under conditions of low temperature, low pressure and high speed irrespective of the kind of toner employed.

摘要翻译： 一种通过电子照相方法制备印版的方法，包括提供含有可在电子照相感光元件进行化学反应处理时能除去的树脂（A）的可剥离转印层（T），在 通过电子照相方法转印层，仅在调色剂图像上提供含有热塑性树脂（B）的粘合剂层（M），将调色剂图像与转印层（T）和粘合剂层（M）一起从电子照相光转印 将调色剂图像与转印层（T）和粘合剂层（M）一起从初级接收体转移到具有能够提供适合于平版印刷的亲水表面的表面的接收材料 打印时间，然后通过化学反应处理去除接收材料上的非图像部分中的转印层（T）。 根据本发明的方法，即使当转印层的厚度减小时，也可以长期稳定地连续地获得具有图像面积比例大的具有良好图像质量的印刷品的印刷版， 转移在低温，低压和高速的条件下进行，而与使用的调色剂的种类无关。

公开(公告)号：US5652076A

公开(公告)日：1997-07-29

申请号：US660129

申请日：1996-06-07

申请人： Eiichi Kato ,  Hiroyuki Oishi ,  Kazuo Ishii

发明人： Eiichi Kato ,  Hiroyuki Oishi ,  Kazuo Ishii

IPC分类号： G03G5/05 ,  G03G13/28 ,  G03G13/16

CPC分类号： G03G5/0592 ,  G03G13/283 ,  G03G5/0589

摘要： A method for preparation of a printing plate by an electrophotographic process comprising providing a peelable transfer layer (T) containing a resin (A) capable of being removed upon a chemical reaction treatment on an electrophotographic light-sensitive element, forming a toner image on the transfer layer by an electrophotographic process, providing an adhesive layer (M) containing a thermoplastic resin (B) only on the toner image, transferring the toner image together with the transfer layer (T) and the adhesive layer (M) from the electrophotographic light-sensitive element to a receiving material having a surface capable of providing a hydrophilic surface suitable for lithographic printing at the time of printing, and then removing the transfer layer (T) on the receiving material by the chemical reaction treatment.According to the method, printing plates which produces prints of good image qualities can be continuously obtained in a stable manner for a long period of time even when the transfer is conducted under conditions of low temperature, low pressure and high speed.

摘要翻译： 一种通过电子照相方法制备印版的方法，包括提供含有可在电子照相感光元件进行化学反应处理时能除去的树脂（A）的可剥离转印层（T），在 通过电子照相方法转印层，仅在调色剂图像上提供含有热塑性树脂（B）的粘合剂层（M），将调色剂图像与转印层（T）和粘合剂层（M）一起从电子照相光转印 具有能够提供在印刷时适合于平版印刷的亲水性表面的表面的接收材料的敏感元件，然后通过化学反应处理除去接收材料上的转印层（T）。 根据该方法，即使在低温，低压和高速的条件下进行转印，也可以长时间稳定地连续地获得产生良好图像质量的印刷品的印版。

公开(公告)号：US5229236A

公开(公告)日：1993-07-20

申请号：US725091

申请日：1991-07-03

申请人： Eiichi Kato ,  Kazuo Ishii ,  Seishi Kasai ,  Hirohisa Yamasaki

发明人： Eiichi Kato ,  Kazuo Ishii ,  Seishi Kasai ,  Hirohisa Yamasaki

IPC分类号： G03G5/05

CPC分类号： G03G5/0596 ,  G03G5/0589 ,  G03G5/0592

摘要： An electrophotographic lithographic printing plate precursor having a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a binder resin, wherein the photoconductive layer contains at least one of the following non-aqueous solvent-dispersed resin grains having an average grain diameter of same as or smaller than the maximum grain diameter of the photoconductive zinc oxide grains: wherein the non-aqueous solvent-dispersed resin grains comprise copolymer resin grains obtained by (i) subjecting to a polymerization reaction in a non-aqueous solvent, a monofunctional monomer (A) being soluble in the non-aqueous solvent but insoluble after polymerization and containing at least one polar group, as described herein, and a monofunctional polymer [M] comprising a polymer principal chain containing at least recurring units each containing a silicon atom and/or fluorine atom-containing substituent, to only one end of which a polymerizable double bond group represented by the following general formula (I), as described herein, is bonded; or (2) subjecting to a dispersion polymerization reaction in a non-aqueous solvent in the presence of a dispersion stabilizing resin soluble in the non-aqueous solvent, a monofunctional monomer (A) being soluble in the non-aqueous solvent but insoluble after polymerization and containing at least one polar group, as described herein, and a monofunctional monomer [B] being copolymerizable with the monofunctional monomer (A) and having a silicon atom and/or fluorine atom-containing substituent.