Invention Grant
- Patent Title: Charging member, process cartridge, and electrophotographic apparatus
- Patent Title (中): 充电构件，处理盒和电子照相设备
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Application No.: US14838191Application Date: 2015-08-27
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Publication No.: US09304429B2Publication Date: 2016-04-05
- Inventor: Noboru Miyagawa , Tomohito Taniguchi , Masahiro Watanabe , Taichi Sato , Takehiko Aoyama , Atsushi Uematsu
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. IP Division
- Priority: JP2014-175933 20140829
- Main IPC: G03G15/02
- IPC: G03G15/02
Abstract:
A charging member includes an electro-conductive substrate and an electro-conductive resin layer. The electro-conductive resin layer contains a binder, a plurality of bowl-shaped resin particles, and a plurality of hollow particles. The charging member has a surface having recesses due to openings of the bowl-shaped resin particles and protrusions due to edges of the openings of the bowl-shaped resin particles, where the positional relationship between one bowl-shaped resin particle and the hollow particles lying in the vicinity of the bowl-shaped resin particle is that the number of the hollow particles being in the space under the bowl-shaped resin particle in a predetermined depth is at least four in average.
Public/Granted literature
- US20160062259A1 CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2016-03-03
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