Invention Grant
- Patent Title: Electrophotographic image forming apparatus having charge transport layer with matrix-domain structure and charging member having concavity and protrusion
- Patent Title (中): 具有具有矩阵结构的电荷传输层和具有凹凸的充电部件的电子照相图像形成装置
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Application No.: US14662228Application Date: 2015-03-18
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Publication No.: US09274442B2Publication Date: 2016-03-01
- Inventor: Taichi Sato , Tomohito Taniguchi , Noboru Miyagawa , Takehiko Aoyama , Atsushi Uematsu , Masahiro Watanabe , Yuki Yamamoto , Harunobu Ogaki , Akihiro Maruyama , Takashi Anezaki , Daisuke Miura , Hirofumi Kumoi
- 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: JP2014-066587 20140327
- Main IPC: G03G15/00
- IPC: G03G15/00 ; G03G5/04 ; G03G15/02
Abstract:
Provided an electrophotographic image forming apparatus comprising an electrophotographic photosensitive member and a charging member. The electrophotographic photosensitive member includes a charge transport layer as a surface layer having a matrix-domain structure including specific resins. The charging member comprises an electro-conductive substrate, and an electro-conductive elastic layer. The electro-conductive elastic layer comprises a binder, and holding a bowl-shaped resin particle having an opening, so that at least a part of the bowl-shaped resin particle is exposed, and the charging member has a concavity derived from the opening of the bowl-shaped resin particle on the surface thereof, and a protrusion derived from an edge of the opening of the bowl-shaped resin particle on the surface thereof.
Public/Granted literature
- US20150277244A1 ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS Public/Granted day:2015-10-01
Information query
