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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.
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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。
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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。
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公开(公告)号：US5055369A
公开(公告)日：1991-10-08
申请号：US325795
申请日：1989-03-20
申请人： Eiichi Kato , Hiroshi Ishibashi , Kazuo Ishii
发明人： Eiichi Kato , Hiroshi Ishibashi , Kazuo Ishii
摘要： A liquid developer for electrostatic photography is disclosed. The liquid developer comprises a resin dispersed as grains in a non-aqueous solvent having an electrical resistance of 10.sup.9 .OMEGA.cm or more and a dielectric constant of 3.5 or less, which is characterized in that the dispersed resin grains are copolymer resin grains obtained by polymerizing a solution containing at least one monofunctional monomer (A) which is soluble in the non-aqueous solvent but becomes insoluble therein after polymerization and at least one monofunctional macromonomer (B) which is composed of a polymer moiety having a repeating unit of the following formula (I) and a copolymerizable double bond-containing group of the following formula (II) bonded to only one terminal of the main chain of the polymer moiety and which has a number average molecular weight of 1.times.10.sup.4 or less, in the presence of a resin which is soluble in the non-aqueous solvent and which contains no graft group capable of polymerizing with the monomers; ##STR1## In formula (I), X represents --COO--, --OCO--, --CH.sub.2 OCO--, --CH.sub.2 COO--, --O--, --SO.sub.2 --, ##STR2## R.sub.1 represents a hydrogen atom or a hydrocarbon group having from 1 to 18 carbon atoms;Y represents a hydrocarbon group having from 1 to 22 carbon atoms;a.sub.1 and a.sub.2 each represents a hydrocarbon atom, a halogen atom, a cyano group, a hydrocarbon group having from 1 to 8 carbon atoms, a group --COO--Z or a group --COO--Z as interrupted by a hydrocarbon group having from 1 to 8 carbon atoms; andZ represents a hydrocarbon group having from 1 to 18 carbon atoms;In formula (II), V has the same meaning as X in formula (I); andb.sub.1 and b.sub.2 each is selected from the same groups as a.sub.1 or a.sub.2 in formula (I).The liquid developer has excellent re-dispersibility, storability, image reproducibility, and fixability.
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公开(公告)号：US5053301A
公开(公告)日：1991-10-01
申请号：US322965
申请日：1989-03-14
申请人： Eiichi Kato , Kazuo Ishii
发明人： Eiichi Kato , Kazuo Ishii
IPC分类号： G03G5/05
CPC分类号： G03G5/0596
摘要： A lithographic printing plate precursor excellent in oil-desensitivity, whereby an original is faithfully reproduced without occurrence of overall or spotted stains as an offset master is provided, which comprises an electrically conductive support and at least one photoconductive layer, provided thereon, containing photoconductive zinc oxide and a binder resin, in which said photoconductive layer contains hydrophilic resin grains having an average grain diameter of same as or smaller than the maximum grain diameter of said photoconductive zinc oxide grains.
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公开(公告)号：US5001029A
公开(公告)日：1991-03-19
申请号：US299496
申请日：1989-01-23
申请人： Eiichi Kato , Kazuo Ishii
发明人： Eiichi Kato , Kazuo Ishii
CPC分类号： G03G5/0546 , G03G5/055 , G03G5/0589 , G03G5/0592
摘要： An electrophotographic lithographic printing plate precursor which utilizes an electrophotographic photoreceptor comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a resin binder, wherein said resin binder comprises at least one resin which contains at least one functional group capable of producing at least one hydroxyl group through decomposition and is crosslinked in part to bring about improvements in background-stain resistance and printing durability.In accordance with this invention, electrophotographic lithographic printing plate precursors excellent in background stain resistance and printing durability are obtained.
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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。
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公开(公告)号：US4871638A
公开(公告)日：1989-10-03
申请号：US165949
申请日：1988-03-09
申请人： Eiichi Kato , Kazuo Ishii , Ryosuke Itakura
发明人： Eiichi Kato , Kazuo Ishii , Ryosuke Itakura
IPC分类号： G03G5/05
CPC分类号： G03G5/0589
摘要： An electrophotographic photosensitive material comprising a support having provided thereon a photoconductive layer containing at least an inorganic photoconductive material and a binder, wherein said binder comprises at least resin (A) having a weight average molecular weight of from 1.times.10.sup.3 to 1.times.10.sup.4 and containing from 0.05 to 20% by weight a copolymer component having at least one acid group selected from --PO.sub.3 H, --COOH, --SO.sub.3 H, --OH, --SH, and ##STR1## wherein R respresents a hydrocarbon group; and resin (B) having a weight average molecular weight of at least 3.times.10.sup.4, said resin (B) not containing the aforesaid acid group nor a basic group.
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公开(公告)号：US4179294A
公开(公告)日：1979-12-18
申请号：US929602
申请日：1978-07-31
申请人： Masatoshi Sugiyama , Eiichi Kato
发明人： Masatoshi Sugiyama , Eiichi Kato
摘要： A silver halide photographic light-sensitive element which comprises at least one hydrophilic colloid layer containing at least one basic polymer and at least one oxonol dye of the following formula (I): ##STR1## wherein X represents a hydrogen atom, a halogen atom, an alkyl group, an akloxy group, an alkylthio group, an alkoxycarbonyl group or an amino group; Y represents a hydrogen atom, a halogen atom, a sulfo group, a lower alkyl group or a hydroxy group; L represents a methine group; M represents a cation; and n represents a positive integer of from 1 to 3. In this element, the hydrophilic colloid layer can be dyed selectively and the dye can be decolorized readily and completely.
摘要翻译： 一种卤化银照相感光元件，其包含至少一种包含至少一种碱性聚合物和至少一种下式（I）的氧杂菁染料的亲水胶体层：其中X表示氢原子，卤素原子， 烷基，烷氧基，烷硫基，烷氧基羰基或氨基; Y表示氢原子，卤素原子，磺基，低级烷基或羟基; L代表次甲基; M表示阳离子; n表示1〜3的正整数。在该元件中，可以选择性地染色亲水胶体层，并且可以容易且完全地脱色染料。
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公开(公告)号：US4130430A
公开(公告)日：1978-12-19
申请号：US788948
申请日：1977-04-19
申请人： Masatoshi Sugiyama , Eiichi Kato
发明人： Masatoshi Sugiyama , Eiichi Kato
摘要： A silver halide light-sensitive material containing at least one hydrophilic colloid layer which contains a basic polymer and at least one oxonol dye represented by the following general formula (I): ##STR1## wherein R represents an aliphatic residue having 4 or more carbon atoms, an aralkyl group or a heterocyclic group; X represents a hydrogen atom, a halogen atom, a sulfo group, a lower alkyl group or a hydroxy group; L represents a methine group including a substituted methine group; M represents a cation; and n represents 0, 1 or 2. The dye has no adverse affects on the photographic properties of the silver halide light-sensitive material and can be easily removed from the hydrophilic colloid layer during photographic processing.
摘要翻译： 含有至少一种含有碱性聚合物和至少一种由以下通式（I）表示的氧杂菁染料的亲水胶体层的卤化银感光材料：其中R表示具有4或 更多的碳原子，芳烷基或杂环基; X表示氢原子，卤素原子，磺基，低级烷基或羟基; L表示包含取代的次甲基的次甲基; M表示阳离子; 并且n表示0,1或2.该染料对卤化银感光材料的照相性能没有不利影响，并且在照相处理期间可以容易地从亲水胶体层中除去。
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