发明授权
US09128398B2 Toner for forming electrophotographic image, method for manufacturing toner for forming electrophotographic image, image forming method, and process cartridge
有权
用于形成电子照相图像的调色剂，用于制造用于形成电子照相图像的调色剂的方法，图像形成方法和处理盒
- 专利标题： Toner for forming electrophotographic image, method for manufacturing toner for forming electrophotographic image, image forming method, and process cartridge
- 专利标题（中）： 用于形成电子照相图像的调色剂，用于制造用于形成电子照相图像的调色剂的方法，图像形成方法和处理盒
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申请号： US13617957申请日： 2012-09-14
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公开(公告)号： US09128398B2公开(公告)日： 2015-09-08
- 发明人: Masashi Nagayama , Mitsuo Aoki , Hisashi Nakajima , Saori Yamada , Mariko Takii
- 申请人： Masashi Nagayama , Mitsuo Aoki , Hisashi Nakajima , Saori Yamada , Mariko Takii
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2011-201954 20110915; JP2012-199607 20120911
- 主分类号： G03G9/087
- IPC分类号： G03G9/087 ; G03G15/08 ; G03G9/08 ; G03G9/097
摘要：
A toner for forming an electrophotographic image is provided, wherein the toner includes at least four types of binder resins, wherein the binder resins includes at least: a crystalline polyester resin (A); a non-crystalline resin (B); a non-crystalline resin (C); and a composite resin (D) which includes a condensation polymerization resin unit and an addition polymerization resin unit, wherein the non-crystalline resin (B) includes a chloroform insoluble matter, wherein the non-crystalline resin (C) has a softening temperature (T½) lower than that of the non-crystalline resin (B) by 25° C. or more, and wherein the toner has a main peak between 1,000 to 10,000 in a molecular weight distribution obtained by GPC from a tetrahydrofuran soluble matter, and the toner has a half-value width of the molecular weight distribution of 15,000 or less.
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