发明授权
US08114560B2 Toner, image forming apparatus, image forming method, and process cartridge using the toner
有权
调色剂，成像设备，图像形成方法和使用调色剂的处理盒
- 专利标题： Toner, image forming apparatus, image forming method, and process cartridge using the toner
- 专利标题（中）： 调色剂，成像设备，图像形成方法和使用调色剂的处理盒
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申请号： US12118006申请日： 2008-05-09
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公开(公告)号： US08114560B2公开(公告)日： 2012-02-14
- 发明人: Shinya Nakayama , Akihiro Kotsugai , Akiyoshi Sabu , Hiroshi Yamashita , Hiroshi Yamada , Junichi Awamura , Tsuyoshi Sugimoto
- 申请人： Shinya Nakayama , Akihiro Kotsugai , Akiyoshi Sabu , Hiroshi Yamashita , Hiroshi Yamada , Junichi Awamura , Tsuyoshi Sugimoto
- 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, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2007-127419 20070511; JP2007-283082 20071031
- 主分类号： G03G9/087
- IPC分类号： G03G9/087
摘要：
The present invention provides a toner containing at least a binder resin, a releasing agent, and a colorant, wherein the binder resin contains at least a polyester resin (A) having a softening point Tm (A) of 120° C. to 160° C., a polyester resin (B) having a softening point Tm (B) of 80° C. or more and less than 120° C. and a composite resin (C) containing a condensation polymerization monomer and an addition polymerization monomer, at least any one of the polyester resins (A) and (B) is a polyester resin prepared by condensation-polymerizing an alcohol component substantially composed of only aliphatic alcohol with a carboxylic acid component, and 65% or more of the alcohol component is 1,2-propanediol.