Invention Grant
- Patent Title: Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
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Application No.: US16597152Application Date: 2019-10-09
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Publication No.: US10921723B2Publication Date: 2021-02-16
- Inventor: Kumiko Takizawa , Tsuyoshi Shimada , Takanori Ueno , Ikuyo Kuroiwa , Haruhiko Mitsuda , Kan Tanabe , Tatsuya Ikezue
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JP2018-201289 20181025
- Main IPC: G03G5/00
- IPC: G03G5/00 ; G03G5/14 ; G03G5/06 ; G03G5/05 ; G03G15/00 ; G03G21/18

Abstract:
Provided is an electrophotographic photosensitive member that can achieve both of abrasion resistance and the suppression of a ghost. The electrophotographic photosensitive member includes: a support; an undercoat layer; a charge-generating layer; and a charge-transporting layer, the undercoat layer, the charge-generating layer, and the charge-transporting layer being arranged in the stated order on the support, wherein the charge-transporting layer includes a charge-transporting substance, and a polymer containing a structure represented by the following general formula (1) and a structure represented by the following general formula (2), wherein the charge-generating layer includes a phthalocyanine crystal and a binder resin, and wherein the undercoat layer includes strontium titanate particles and a binder resin.
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