发明授权
- 专利标题: Toner, developer, and image forming method
- 专利标题(中): 调色剂,显影剂和成像方法
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申请号: US12878750申请日: 2010-09-09
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公开(公告)号: US08679714B2公开(公告)日: 2014-03-25
- 发明人: Ryota Inoue , Akihiro Kotsugai , Yoshihiro Moriya , Akiyoshi Sabu , Shingo Sakashita , Keiko Osaka , Yukiko Nakajima , Yoshitaka Yamauchi , Daiki Yamashita
- 申请人: Ryota Inoue , Akihiro Kotsugai , Yoshihiro Moriya , Akiyoshi Sabu , Shingo Sakashita , Keiko Osaka , Yukiko Nakajima , Yoshitaka Yamauchi , Daiki Yamashita
- 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: JP2009-212168 20090914; JP2010-009046 20100119
- 主分类号: G03G9/087
- IPC分类号: G03G9/087
摘要:
A toner including: a first binder resin; a colorant; a releasing agent; and a crystalline organic compound, wherein the first binder resin contains an amorphous polyester resin (a) having a polyhydroxycarboxylic acid skeleton derived from optically active monomers in a part of a main chain of the amorphous polyester resin, and the polyhydroxycarboxylic acid skeleton has an optical purity X, calculated on the monomer basis, of 80% or less, and the optical purity X is determined from the equation, Optical Purity X (%)=|X(L-form)−X(D-form)| wherein the crystalline organic compound is any one of a crystalline polyester resin (b) and a crystalline low molecular compound having a melting point of 60° C. to 100° C., and being selected from a group consisting of fatty acid having 16 to 24 carbon atoms, alcohol having 16 to 24 carbon atoms, a fatty acid ester compound, and aliphatic carboxylic acid amide.
公开/授权文献
- US20110065036A1 TONER, DEVELOPER, AND IMAGE FORMING METHOD 公开/授权日:2011-03-17
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