Invention Grant
- Patent Title: Charging member, process cartridge and electrophotographic apparatus
- Patent Title (中): 充电部件,处理盒和电子照相设备
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Application No.: US14680034Application Date: 2015-04-06
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Publication No.: US09256153B2Publication Date: 2016-02-09
- Inventor: Takehiko Aoyama , Taichi Sato , Tomohito Taniguchi
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper and Scinto
- Priority: JP2014-086421 20140418
- Main IPC: G03G15/02
- IPC: G03G15/02

Abstract:
Provided a charging member including an electro-conductive substrate and a surface layer. The surface layer includes a binder resin, and a resin particle that roughens the surface layer. A surface of the charging member has a plurality of protrusions each derived from the resin particle. The resin particle has a pore inside thereof, has a porosity Vt of 1.5% by volume or more and 45.0% by volume or less, and has a first and second regions. The first region has a porosity V1, the second region thereof has a porosity V2, and V1 is larger than V2.
Public/Granted literature
- US20150301469A1 CHARGING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2015-10-22
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