发明授权
US07550242B2 Toner, toner manufacturing method, developer, image forming apparatus, and process cartridge for the image forming apparatus
有权
调色剂，调色剂制造方法，显影剂，成像设备和用于图像形成设备的处理盒
- 专利标题： Toner, toner manufacturing method, developer, image forming apparatus, and process cartridge for the image forming apparatus
- 专利标题（中）： 调色剂，调色剂制造方法，显影剂，成像设备和用于图像形成设备的处理盒
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申请号： US11372186申请日： 2006-03-10
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公开(公告)号： US07550242B2公开(公告)日： 2009-06-23
- 发明人: Tsuyoshi Nozaki , Chiyoshi Nozaki , Minoru Nakamura , Atsushi Yamamoto , Hideaki Yasunaga
- 申请人： Tsuyoshi Nozaki , Chiyoshi Nozaki , Minoru Nakamura , Atsushi Yamamoto , Hideaki Yasunaga
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company Limited
- 当前专利权人： Ricoh Company Limited
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权： JP2005-069234 20050311; JP2005-269690 20050916
- 主分类号： G03G9/093
- IPC分类号： G03G9/093
摘要：
A toner having a core containing a colorant, a release agent and a binder resin (A), and a shell containing a binder resin (B), the shell overlying the core, wherein the binder resin (A) contains a resin having a polyester skeleton, the binder resin (B) contains a vinyl copolymer resin, and a weight ratio of the shell to the core is from 0.05 to 0.5, and wherein the toner has a volume average particle diameter of from 3 to 8 μm; a toner manufacturing method of such the toner can be used in an image forming apparatus and in a process cartridge.