发明授权
- 专利标题: Toner and developer
- 专利标题(中): 墨粉和开发商
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申请号: US13063701申请日: 2009-09-02
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公开(公告)号: US08546055B2公开(公告)日: 2013-10-01
- 发明人: Shinya Nakayama , Hisashi Nakajima , Saori Yamada , Mitsuo Aoki , Hyo Shu , Hiroyuki Kishida
- 申请人: Shinya Nakayama , Hisashi Nakajima , Saori Yamada , Mitsuo Aoki , Hyo Shu , Hiroyuki Kishida
- 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: JP2008-234345 20080912
- 国际申请: PCT/JP2009/065619 WO 20090902
- 国际公布: WO2010/029903 WO 20100318
- 主分类号: G03G9/087
- IPC分类号: G03G9/087
摘要:
A toner containing at least a binder resin, releasing agent, and colorant, wherein the binder resin contains polyester resin (A), polyester resin (B), and polyester resin (C), which is prepared by condensation-polymerizing (i) an alcohol component containing an alkylene oxide adduct of bisphenol compound and (ii) a carboxylic acid component; at least one of the polyester resin (A) and polyester resin (B) is a polyester resin prepared by condensation-polymerizing (i) the alcohol component substantially composed of only aliphatic alcohol and containing 1,2-propanediol in an amount of 65 mole % or more of a divalent alcohol component and (ii) the carboxylic acid component; and a softening point Tm(A) of the polyester resin (A) is 10 C or more higher than Tm(B) of the polyester resin (B), and the absolute difference between Tm(C) of the polyester resin (C) and the Tm(B) is 5° C. or less.
公开/授权文献
- US20110165508A1 TONER AND DEVELOPER 公开/授权日:2011-07-07
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