发明授权
- 专利标题: Charging member, process cartridge and electrophotographic apparatus
- 专利标题(中): 充电部件,处理盒和电子照相设备
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申请号: US14336917申请日: 2014-07-21
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公开(公告)号: US09448502B2公开(公告)日: 2016-09-20
- 发明人: Tomohito Taniguchi , Taichi Sato , Atsushi Uematsu
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 代理机构: Fitzpatrick, Cella, Harper & Scinto
- 优先权: JP2013-014859 20130129
- 主分类号: G03G15/02
- IPC分类号: G03G15/02 ; G03G21/18
摘要:
A charging member including an electro-conductive substrate, an electro-conductive elastic layer, and an electro-conductive surface layer, wherein the elastic layer includes a polymer having a unit derived from ethylene oxide and at least one particle selected from the group consisting of graphite particles and graphitized particles; wherein a particle-exposing portion where the particle is exposed is present on the surface of the elastic layer; the surface of the elastic layer including the particle-exposing portions is coated with the surface layer; the surface layer includes binder resin and resin particles dispersed in the binder resin and has a plurality of protrusions derived from the resin particles on the surface; when the resin particles in the surface layer are orthographically projected onto the surface of the elastic layer, areas other than projected areas of the resin particles on the surface of the elastic layer overlap the particle-exposing portion.
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