公开(公告)号：US20070298347A1

公开(公告)日：2007-12-27

申请号：US11895941

申请日：2007-08-27

申请人： Koji Iwase ,  Itsuo Iwai ,  Kenjiro Yai

发明人： Koji Iwase ,  Itsuo Iwai ,  Kenjiro Yai

IPC分类号： G03G5/00

CPC分类号： G03G9/131 ,  G03G9/132 ,  G03G9/133 ,  G03G9/1355

摘要： A liquid developer composition for electrophotography is disclosed which comprises a pigment, an acrylic-based thermoplastic resin, an electric insulating solvent and a dispersant, the acrylic-based thermoplastic resin having a degree of swelling of less than 0.5 g against the electric insulating solvent, the dispersant comprising at least one of modified novolak resin (A) and copolymer (B) each of which contains in its molecule an aromatic ring and a structure given by ring opening of an epoxy group with a carboxyl group derived from a hydroxycarboxylic acid.

摘要翻译： 公开了一种用于电子照相的液体显影剂组合物，其包含颜料，丙烯酸类热塑性树脂，电绝缘溶剂和分散剂，相对于电绝缘溶剂，具有小于0.5g的溶胀度的丙烯酸类热塑性树脂， 所述分散剂包含改性酚醛清漆树脂（A）和共聚物（B）中的至少一种，其分子中分别含有芳环和通过环氧基与由羟基羧酸衍生的羧基开环形成的结构。

公开(公告)号：US20060166126A1

公开(公告)日：2006-07-27

申请号：US11040983

申请日：2005-01-21

申请人： Koji Iwase ,  Itsuo Iwai ,  Kenjiro Yai

发明人： Koji Iwase ,  Itsuo Iwai ,  Kenjiro Yai

IPC分类号： G03G9/13

CPC分类号： G03G9/131 ,  G03G9/132 ,  G03G9/133 ,  G03G9/1355

摘要： A liquid developer composition for electrophotography is disclosed which comprises a pigment, an acrylic-based thermoplastic resin, an electric insulating solvent and a dispersant, the acrylic-based thermoplastic resin having a degree of swelling of less than 0.5 g against the electric insulating solvent, the dispersant comprising at least one of modified novolak resin (A) and copolymer (B) each of which contains in its molecule an aromatic ring and a structure given by ring opening of an epoxy group with a carboxyl group derived from a hydroxycarboxylic acid.

摘要翻译： 公开了一种用于电子照相的液体显影剂组合物，其包含颜料，丙烯酸类热塑性树脂，电绝缘溶剂和分散剂，相对于电绝缘溶剂，具有小于0.5g的溶胀度的丙烯酸类热塑性树脂， 所述分散剂包含改性酚醛清漆树脂（A）和共聚物（B）中的至少一种，其分子中分别含有芳环和通过环氧基与由羟基羧酸衍生的羧基开环形成的结构。

公开(公告)号：US08722302B2

公开(公告)日：2014-05-13

申请号：US12679822

申请日：2008-09-26

申请人： Hirohito Maeda ,  Katsutoshi Okamoto ,  Takaaki Yodo ,  Naoya Inazumi ,  Koji Iwase

发明人： Hirohito Maeda ,  Katsutoshi Okamoto ,  Takaaki Yodo ,  Naoya Inazumi ,  Koji Iwase

IPC分类号： G03G9/13

CPC分类号： G03G9/131 ,  G03G9/1355

摘要： The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method.A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.

摘要翻译： 本发明提供了通过凝聚法获得的用于电子照相或静电记录的液体显影剂的方法，其充分保持着色树脂颗粒的充电性能和良好的分散稳定性，以及通过该方法获得的液体显影剂。 通过凝聚法制造液体显影剂的方法，其中着色树脂颗粒在颗粒分散剂和含酸基树脂的存在下分散在绝缘烃分散介质中，并且颗粒分散剂是 多胺化合物和羟基羧酸的自缩合产物。

公开(公告)号：US07851117B2

公开(公告)日：2010-12-14

申请号：US12095042

申请日：2006-11-24

申请人： Takaaki Yodo ,  Katsutoshi Okamoto ,  Hideo Shibata ,  Koji Iwase

发明人： Takaaki Yodo ,  Katsutoshi Okamoto ,  Hideo Shibata ,  Koji Iwase

IPC分类号： G03G9/12

CPC分类号： G03G9/13 ,  G03G9/12 ,  G03G9/1355

摘要： It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good.A liquid developer formed by dispersing colored resin particles comprising at least a pigment, a dispersant and a resin in a hydrocarbon insulating medium using a coacervation method, wherein said dispersant is a carbodiimide compound having at least one basic nitrogen-containing group and at least one polyester side chain introduced through a reaction with a carbodiimide group in its molecule, and said resin is an acid group-containing resin and the acid value of the resin is 1 to 100.

摘要翻译： 本发明的目的是提供一种液体显影剂，其中使用凝聚法获得的用于电子照相或静电记录的液体显影剂，液体显影剂的电阻和调色剂颗粒的电泳特性或充电特性得到充分保持 ，颜料的分散性和调色剂颗粒的分散稳定性良好。 一种液体显影剂，其通过使用凝聚法将至少包含颜料，分散剂和树脂的着色树脂颗粒分散在烃绝缘介质中而形成，其中所述分散剂是具有至少一个碱性含氮基团的碳二亚胺化合物和至少一种 通过与其分子中的碳二亚胺基反应引入的聚酯侧链，所述树脂是含酸基的树脂，树脂的酸值为1〜100。

公开(公告)号：US20090246678A1

公开(公告)日：2009-10-01

申请号：US12095042

申请日：2006-11-24

申请人： Takaaki Yodo ,  Katsutoshi Okamoto ,  Hideo Shibata ,  Koji Iwase

发明人： Takaaki Yodo ,  Katsutoshi Okamoto ,  Hideo Shibata ,  Koji Iwase

IPC分类号： G03G9/12

CPC分类号： G03G9/13 ,  G03G9/12 ,  G03G9/1355

摘要： It is an object of the present invention to provide a liquid developer in which in liquid developers for electrophotography or electrostatic recording obtained using the coacervation method, electric resistance of the liquid developer and the electrophoretic property or the charging characteristic of the toner particles are adequately maintained, and the dispersibility of a pigment and the dispersion stability of the toner particles are good.A liquid developer formed by dispersing colored resin particles comprising at least a pigment, a dispersant and a resin in a hydrocarbon insulating medium using a coacervation method, wherein said dispersant is a carbodiimide compound having at least one basic nitrogen-containing group and at least one polyester side chain introduced through a reaction with a carbodiimide group in its molecule, and said resin is an acid group-containing resin and the acid value of the resin is 1 to 100.

摘要翻译： 本发明的目的是提供一种液体显影剂，其中使用凝聚方法获得的用于电子照相或静电记录的液体显影剂，液体显影剂的电阻和调色剂颗粒的电泳特性或充电特性得到充分保持 ，颜料的分散性和调色剂颗粒的分散稳定性良好。 一种液体显影剂，其通过使用凝聚法将至少包含颜料，分散剂和树脂的着色树脂颗粒分散在烃绝缘介质中而形成，其中所述分散剂是具有至少一个碱性含氮基团的碳二亚胺化合物和至少一种 通过与其分子中的碳二亚胺基反应引入的聚酯侧链，所述树脂是含酸基的树脂，树脂的酸值为1〜100。

公开(公告)号：US20100323291A1

公开(公告)日：2010-12-23

申请号：US12679822

申请日：2008-09-26

申请人： Hirohito Maeda ,  Katsutoshi Okamoto ,  Takaaki Yodo ,  Naoya Inazumi ,  Koji Iwase

发明人： Hirohito Maeda ,  Katsutoshi Okamoto ,  Takaaki Yodo ,  Naoya Inazumi ,  Koji Iwase

IPC分类号： G03G9/13 ,  G03G9/12

CPC分类号： G03G9/131 ,  G03G9/1355

摘要： The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method.A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.

摘要翻译： 本发明提供了通过凝聚法获得的用于电子照相或静电记录的液体显影剂的方法，其充分保持着色树脂颗粒的充电性能和良好的分散稳定性，以及通过该方法获得的液体显影剂。 通过凝聚法制造液体显影剂的方法，其中着色树脂颗粒在颗粒分散剂和含酸基树脂的存在下分散在绝缘烃分散介质中，并且颗粒分散剂是 多胺化合物和羟基羧酸的自缩合产物。

公开(公告)号：US20100136475A1

公开(公告)日：2010-06-03

申请号：US11993065

申请日：2006-06-26

申请人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo

发明人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo

IPC分类号： G03G9/08 ,  G03G9/09

CPC分类号： G03G9/12 ,  G03G9/125 ,  G03G9/1355

摘要： Disclosed is a process for production of a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent are finely dispersed and the resulting colored resin particle is small in particle size and has an excellent dispersion stability, and which has excellent optical properties. The process comprises preparing a mixture containing a pigment, a resin having a fixability, a solvent (A) which can dissolve the resin therein, a hydrocarbon solvent (B) which cannot dissolve the resin therein and has an SP value lower than that of the solvent (A), at least one dispersing agent (A) which is soluble in both of the solvents (A) and (B), and at least one dispersing agent (B) which is soluble in the solvent (A) but insoluble or poorly soluble in the solvent (B), and distilling away the solvent (A) from the mixture to cause the resin dissolved in the mixture to precipitate, whereby a colored resin particle having the pigment included therein is dispersed in the solvent (B).

摘要翻译： 公开了通过凝聚法制造用于电子照相或静电记录的液体显影剂的方法。 该方法可以产生液体显影剂，其中着色剂（例如颜料）通过蒸馏溶剂而完全包含在树脂颗粒内，同时保持着色剂细分散的状态，并且所得着色树脂颗粒小 粒径大，分散稳定性优异，光学特性优异。 该方法包括制备含有颜料的混合物，具有定影性的树脂，能够溶解树脂的溶剂（A），不溶于树脂的烃溶剂（B），其SP值低于 溶剂（A），至少一种可溶于溶剂（A）和（B）的分散剂（A））和至少一种可溶于溶剂（A）的分散剂（B），但不溶于 不溶于溶剂（B），并从混合物中蒸出溶剂（A），导致溶解在混合物中的树脂沉淀，由此将其中含有颜料的着色树脂颗粒分散在溶剂（B）中。

公开(公告)号：US5847028A

公开(公告)日：1998-12-08

申请号：US770152

申请日：1996-12-19

申请人： Koji Iwase ,  Hideki Kinoshita ,  Teruhisa Sato ,  Hiroyuki Ishikawa

发明人： Koji Iwase ,  Hideki Kinoshita ,  Teruhisa Sato ,  Hiroyuki Ishikawa

IPC分类号： B01F17/52 ,  B01F17/00 ,  C09B67/46 ,  C09C3/10 ,  C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/037 ,  C09D11/10 ,  C09D11/103 ,  C09D11/106 ,  C09D11/107 ,  C09D11/108 ,  C09D17/00 ,  C09D161/04 ,  C09D161/14 ,  C08L63/10

CPC分类号： C09D11/03 ,  B01F17/0042 ,  C09B67/009 ,  C09D17/00

摘要： A pigment dispersion is disclosed which comprises a pigment, a pigment dispersant, and optionally a binder resin, wherein the pigment dispersion comprises as the pigment dispersion at least 0.2 parts by weight of a modified novolak resin (A) and/or a graft copolymer (B) relative to 100 parts by weight of the pigment, the modified novolak resin (A) and the graft copolymer (B) each having an aromatic ring and a ring structure given by ring opening of an epoxy group by a carboxyl group of a hydroxycarboxylic acid or a derivative thereof. An ink composition for offset printing containing the pigment dispersion is also disclosed.

摘要翻译： 公开了一种颜料分散体，其包含颜料，颜料分散剂和任选的粘合剂树脂，其中所述颜料分散体包含至少0.2重量份改性的酚醛清漆树脂（A）和/或接枝共聚物（ B）相对于颜料100重量份，改性酚醛清漆树脂（A）和接枝共聚物（B），其具有通过羟基羧酸的羧基开环形成的芳香环和环结构 酸或其衍生物。 还公开了含有颜料分散体的胶印用油墨组合物。

公开(公告)号：US20100136474A1

公开(公告)日：2010-06-03

申请号：US11993068

申请日：2006-06-26

申请人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo

发明人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo

IPC分类号： G03G9/125 ,  G03G9/12

CPC分类号： G03G9/122 ,  G03G9/125

摘要： Disclosed is a process for production of a liquid developer for use in electrophotograph or electrostatic recording by coacervation method. The process can produce a liquid developer in which a coloring agent (e.g., a pigment) is included completely within a resin particle by distillation of a solvent while retaining the state where the coloring agent are finely dispersed and the resulting colored resin particle is small in particle size and has an excellent dispersion stability, and which has excellent optical properties. The process comprises preparing a mixture containing a pigment, a resin having a fixability, a solvent (A) which can dissolve the resin therein, a hydrocarbon solvent (B) which cannot dissolve the resin therein and has an SP value lower than that of the solvent (A) and at least one dispersing agent which is soluble in both of the solvents (A) and (B), and distilling away the solvent (A) from the mixture to cause the resin dissolved in the mixture to precipitate, whereby a colored resin particle having the pigment included therein is dispersed in the solvent (B).

摘要翻译： 公开了通过凝聚法制造用于电子照相或静电记录的液体显影剂的方法。 该方法可以产生液体显影剂，其中着色剂（例如颜料）通过蒸馏溶剂而完全包含在树脂颗粒内，同时保持着色剂细分散的状态，并且所得着色树脂颗粒小 粒径大，分散稳定性优异，光学特性优异。 该方法包括制备含有颜料的混合物，具有定影性的树脂，能够溶解树脂的溶剂（A），不溶于树脂的烃溶剂（B），其SP值低于 溶剂（A）和至少一种可溶于两种溶剂（A）和（B）的分散剂，并将溶剂（A）从混合物中蒸馏出来，使溶解在该混合物中的树脂沉淀，由此得到 包含其中的颜料的着色树脂颗粒分散在溶剂（B）中。

公开(公告)号：US20090011359A1

公开(公告)日：2009-01-08

申请号：US11912789

申请日：2006-04-27

申请人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo ,  Hideo Shibata

发明人： Koji Iwase ,  Hirohito Maeda ,  Takaaki Yodo ,  Hideo Shibata

IPC分类号： G03G9/12

CPC分类号： G03G9/122 ,  G03G9/12 ,  G03G9/125 ,  G03G9/132 ,  G03G9/133 ,  G03G9/1355

摘要： It is an object of the present invention to provide a liquid developer in which, in liquid developers for electrophotography or electrostatic recording, the adverse effect on electric resistance of the liquid developer and the electrically charged characteristics of toner particles is minimized and the dispersibility of a pigment and the dispersion stability of the toner particles are improved. The present invention relates to a liquid developer, which is obtained by dispersing colored resin particles encapsulating a pigment in an insulating hydrocarbon organic solvent by a wet-grinding method using a dispersant, wherein the dispersant is a polyester side chain-containing carbodiimide type compound formed by introducing a polyester side chain into a molecule of a carbodiimide compound through a reaction with a carbodiimide group.

摘要翻译： 本发明的目的是提供一种液体显影剂，其中在用于电子照相或静电记录的液体显影剂中对液体显影剂的电阻的不利影响和调色剂颗粒的带电特性最小化，并且其分散性 颜料和调色剂颗粒的分散稳定性得到改善。 本发明涉及一种液体显影剂，其通过使用分散剂的湿式研磨法将包封颜料的着色树脂颗粒分散在绝缘烃有机溶剂中而获得，其中分散剂是形成的含聚酯侧链的碳二亚胺型化合物 通过与碳二亚胺基团的反应将聚酯侧链引入碳二亚胺化合物的分子中。