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：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：US5114822A

公开(公告)日：1992-05-19

申请号：US647110

申请日：1991-01-29

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/133

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises at least resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are copolymer resin grains obtained by polymerizing a solution containing (1) at least a mono-functional monomer (A) which is soluble in the above-described non-aqueous solvent but becomes insoluble therein by being polymerized, and, optionally, a monomer (B-1) represented by the formula (III) or a monomer (B-2) represented by the formula (IV), in the presence of a dispersion-stabilizing resin soluble in the non-aqueous solvent, which is an AB type block copolymer. The liquid developer of the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability, and provide a master plate for offset printing having high printing durability.

公开(公告)号：US5141835A

公开(公告)日：1992-08-25

申请号：US697179

申请日：1991-05-08

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/133 ,  G03G9/131

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises at least resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 cm and a dielectric constant of not higher than 3.5, wherein the dispersed resin grains are copolymer resin grains obtained by polymerizing a solution containing (1) at least a mono-functional monomer (A) which is soluble in the above-described non-aqueous solvent but becomes insoluble therein by being polymerized, and, optionally, a monomer (C) represented by the formula (III) or a monomer (D) represented by the formula (IV), in the presence of a dispersion-stabilizing resin soluble in the non-aqueous solvent, which is a graft type copolymer. The liquid developer of the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability, and provide a master plate for offset printing having high printing durability.

公开(公告)号：US5112718A

公开(公告)日：1992-05-12

申请号：US535674

申请日：1990-06-11

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： C08F299/00 ,  G03G9/13

CPC分类号： G03G9/133 ,  C08F299/00 ,  Y10S430/105

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises resin grains 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 grains are polymer resin grains obtained by polymerizing a solution containing at least one kind of a mono-functional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble in the non-aqueous solvent by being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the non-aqueous solvent and is a comb-like copolymer comprising (1) at least a mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and (2) at least a monomer represented by formula (III) as defined in the specification.The liquid developer according to the present invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability.

摘要翻译： 公开了一种用于静电摄影的液体显影剂。 液体显影剂包含分散在电阻至少为10Ω欧姆·厘米且介电常数不高于3.5的非水溶剂中的树脂颗粒，其中分散的树脂颗粒是聚合物树脂颗粒，其通过聚合至少包含至少 一种可溶于非水溶剂但通过聚合在不溶于非水溶剂的单官能单体（A）中，在可溶于非水溶剂的分散稳定树脂的存在下， 溶剂，并且是梳状共聚物，其包含（1）至少一种重均分子量为1×10 3至2×10 4的单官能大分子单体（M）和（2）至少由式（III）表示的单体，如 规格。 根据本发明的液体显影剂的再分散性，保存性，稳定性，图像再现性和定影性优异。

公开(公告)号：US5108864A

公开(公告)日：1992-04-28

申请号：US603482

申请日：1990-10-26

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/133 ,  Y10S430/105

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises resin grains 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 grains asre copolymer resin grains obtained by polymerizing a solution containing at least one kind of a mono-functional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble in the non-aqueous solvent by being polymerized, in the presence of a dispersion-stabilizing resin which is soluble in the non-aqueous solvent and is a comb-like copolymer comprising at least (1) a mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and (2) a monomer represented by the general formula (III) described below, the mono-functional macromonomer (M) comprising at least one polymer component corresponding to a repeating unit represented by the general formula (IIa) or (IIb) described below and at least one polymer component containing at least one polar group selected from --COOH, --PO.sub.3 H.sub.2, --SO.sub.3 H, --OH, ##STR1## wherein R.sub.1 represents --R.sub.2 or -OR.sub.2 (wherein R.sub.2 represents a hydrocarbon group)), --SH, a formyl group and an amino group, and the monofunctional macromonomer (M) having a polymerizable double bond group represented by the general formula (I) described below bonded to only one terminal of the main chain thereof; ##STR2## wherein X.sub.0 represents --COO--, --OCO--, --CH.sub.2 OCO--, --CH.sub.2 COO--, or --O--, --SO.sub.2 --, --CO--, ##STR3## wherein R.sub.11 represents a hydrogen atom or a hydrocarbon group), and a.sub.1 and a.sub.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, a hydrocarbon group, --COO--Z.sub.1 or --COO--Z.sub.1 bonded via a hydrocarbon group (wherein Z.sub.1 represents a hydrogen atom or a hydrocarbon group); ##STR4## wherein X.sub.1 has the same meaning as X.sub.0 in the general formula (I); Q.sub.1 represents an aliphatic group having from 1 to 22 carbon atoms or an aromatic group having from 6 to 12 carbon atoms; b.sub.1 and b.sub.2, which may be the same or different, have the same meaning as a.sub.1 and a.sub.2 in the general formula (I); and V represents --CN, --CONH.sub.2, or ##STR5## (wherein Y represents a hydrogen atom, a halogen atom, an alkoxy group or --COOZ.sub.2 (wherein Z.sub.2 represents an alkyl group, an aralkyl group, or an aryl group)); ##STR6## wherein X.sub.2 has the same meaning as X.sub.0 in the general formula (I); Q.sub.2 has the same meaning as Q.sub.1 in the general formula (IIa); and d.sub.1 and d.sub.2, which may be the same or different, have the same meaning as a.sub.1 and a.sub.2 in the general formula (I), with the proviso that, in the component of the mono-functional macromonomer (M) represented by the general formula (II) and in the component of the monomer represented by the general formula (III), at least one of Q.sub.1 and Q.sub.2 represents an aliphatic group having from 10 to 22 carbon atoms.

公开(公告)号：US5073471A

公开(公告)日：1991-12-17

申请号：US476190

申请日：1990-02-07

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/131

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises resin grains 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 grains are copolymer resin grains obtained by polymerizing a solution containing at least one kind of a monofunctional monomer (A), which is soluble in the above non-aqueous solvent but becomes insoluble therein by being polymerized, in the presence of a dispersion-stabilizing resin soluble in the non-aqueous solvent and an oligomer (B) having a number average molecular weight of not more than 1.times.10.sup.4. The dispersion-stabilizing resin is a polymer containing at least a recurring unit represented by the formula (I) described in the specification, a part of which has been crosslinked, and has a double bond group which is copolymerizable with the monofunctional monomer (A) and which is bonded to only one terminal of at least one polymer main chain, and the oligomer (B) is a polymer comprising a recurring unit represented by the formula (II) described in the specification and has at least one kind of a polar group. The light developer according to the present invention is excellent in re-dispersibility, storability, stability image-reproducibility, and fixability.

摘要翻译： 公开了一种用于静电摄影的液体显影剂。 该液体显影剂包括分散在电阻至少为10 9欧姆·厘米且介电常数不高于3.5的非水溶剂中的树脂颗粒，其中分散的树脂颗粒是通过聚合至少包含至少一种 在可溶于非水溶剂的分散稳定树脂和低聚物（B）的存在下，可溶于上述非水溶剂但不溶于其中的一种单官能单体（A） 数均分子量不大于1×10 4。 分散稳定化树脂是至少含有本说明书中所述的式（I）表示的重复单元的聚合物，其一部分已经交联，并且具有可与单官能单体（A）共聚的双键基团， 并且仅与至少一个聚合物主链的一个末端键合，并且低聚物（B）是包含由说明书中所述的式（II）表示的重复单元的聚合物，并且具有至少一种极性基团 。 根据本发明的光显影剂在再分散性，保存性，稳定性图像再现性和定影性方面是优异的。

公开(公告)号：US5073470A

公开(公告)日：1991-12-17

申请号：US466811

申请日：1990-01-18

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/131

摘要： A liquid developer for electrostatic photography comprising resin grains dispersed in a non-aqueous solvent having an electric resistance of at least 10.sup.9 cm and a dielectric constant of not higher than 3.5 is disclosed. The dispersed resin grains contained therein are grains of a copolymer obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the aforesaid non-aqueous solvent but becomes insoluble after being polymerized and at least one monfunctional macromonomer (M) having a number average molecular weight of not more than 1.times.10.sup.4 and having a polymerizable double bond group represented by formula (M-II) bonded to only one terminal of a polymer main chain composed of a recurring unit represented by formula (M-I) in the presence of a dispersion stabilizing resin which is a polymer having at least a recurring unit represented by formula (I), a part of which has been crosslinked, and has a polymerizable double bond group copolymerizable with the monofunctional monomer (A) bonded to only one terminal of at least one polymer main chain thereof, the dispersion stabilizing resin being soluble in the non-aqueous solvent.The liquid developer is excellent in redispersibility, storability, stability, image-reproducibility and fixability.

摘要翻译： 公开了一种用于静电照相的液体显影剂，其包括分散在电阻至少为109cm，介电常数不高于3.5的非水溶剂中的树脂颗粒。 其中所含的分散树脂颗粒是通过使含有至少一种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）的溶液聚合得到的共聚物颗粒和至少一种单官能大分子单体（M） 数均分子量不大于1×10 4，并且具有由式（M-II）表示的可聚合双键基团在仅存在于由式（MI）表示的重复单元组成的聚合物主链的一个末端的情况下 的分散稳定树脂，其是至少具有由式（I）表示的重复单元的聚合物，其一部分已经交联，并且具有可与仅与一个末端键合的单官能单体（A）可共聚的可聚合双键基团 的至少一种聚合物主链，该分散体稳定树脂可溶于非水溶剂。 液体显影剂的再分散性，保存性，稳定性，图像再现性和定影性优异。

公开(公告)号：US5112716A

公开(公告)日：1992-05-12

申请号：US507535

申请日：1990-04-11

申请人： Eiichi Kato ,  Hideyuki Hattori

发明人： Eiichi Kato ,  Hideyuki Hattori

IPC分类号： G03G9/13

CPC分类号： G03G9/131 ,  Y10S430/105

摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises at least resin grains 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 grains are polymer resin grains obtained by polymerizing a solution containing (1) at least a mono-functional monomer (A) which is soluble in the aforesaid non-aqueous solvent but becomes insoluble therein by being polymerized in the presence of a dispersion-stabilizing resin (BA) soluble in the non-aqueous solvent, which is a polymer containing a recurring unit represented by the formula (I) described in the specification, at least a part of the main chain of the polymer being crosslinked, and, optionally, (2) a monomer (B-1) represented by the formula (II-1) described in the specification. The liquid developer of this invention is excellent in re-dispersibility, storability, stability, image-reproducibility, and fixability.