Invention Grant
- Patent Title: Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
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Application No.: US16201713Application Date: 2018-11-27
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Publication No.: US10466603B2Publication Date: 2019-11-05
- Inventor: Takashi Anezaki , Taichi Sato , Atsushi Fujii
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon USA, Inc., IP Division
- Priority: JP2017-230511 20171130
- Main IPC: G03G5/00
- IPC: G03G5/00 ; G03G5/05 ; G03G15/04 ; G03G5/06 ; G03G21/18 ; G03G5/14

Abstract:
An electrophotographic photosensitive member includes a support member, an electroconductive layer, and a photosensitive layer, in this order. The electroconductive layer contains a binder resin, electrically conductive first metal oxide particles, and second metal oxide particles. The refractive index Rb of the binder resin, the refractive index Rc of the first metal oxide particles, and the refractive index Rh of the second metal oxide particles satisfy the relationships: |Rb−Rc|≤0.35 and |Rb−Rh|≥0.65. The electroconductive layer has a volume resistivity of 1.0×106 Ω·cm to 1.0×1013 Ω·cm, and the ratio of the specific gravity of the first metal oxide particles to the specific gravity of the second metal oxide particles is 0.85 to 1.20.
Public/Granted literature
- US20190163078A1 ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS Public/Granted day:2019-05-30
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