发明授权
US08021814B2 Toner, and oilless fixing method and process cartridge using the toner
有权
调色剂和无油固定方法和使用调色剂的处理盒
- 专利标题: Toner, and oilless fixing method and process cartridge using the toner
- 专利标题(中): 调色剂和无油固定方法和使用调色剂的处理盒
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申请号: US12051248申请日: 2008-03-19
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公开(公告)号: US08021814B2公开(公告)日: 2011-09-20
- 发明人: Masayuki Hagi , Yoshihiro Mikuriya , Hideaki Yasunaga , Hiroaki Katoh , Kazuoki Fuwa , Yoshitaka Sekiguchi , Satoshi Ogawa , Masahide Inoue
- 申请人: Masayuki Hagi , Yoshihiro Mikuriya , Hideaki Yasunaga , Hiroaki Katoh , Kazuoki Fuwa , Yoshitaka Sekiguchi , Satoshi Ogawa , Masahide Inoue
- 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, L.L.P.
- 优先权: JP2007-069763 20070319
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G13/20
摘要:
A toner useful for an oilless fixing method, includes a binder resin; a colorant; and 2.0 to 4.5% by weight of a wax which is soluble in n-hexane, based on a total weight of the toner, wherein the wax is dispersed in the toner, the wax forming wax domain particles (DA) comprising wax domain particles (DS) exposed at a surface of the toner and wax domain particles (DI) encapsulated in the toner and not exposed at the surface of the toner, wherein a weight of the DS is greater than a weight of the DI, wherein the toner from which the DS have been eluted with n-hexane comprises vestigial concavities having an area of 0.01 πμm2 or more on the surface of the toner in an amount of from 1 to 7 pcs/4 μm2, and wherein 60% or more by number of the DA having a particle diameter of 200 nm or more have a spindle or cylindrical shape having an aspect ratio of 4 or more.
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