Invention Grant
- Patent Title: Electrophotographic member, electrophotographic process cartridge, and electrophotographic image forming apparatus
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Application No.: US17697503Application Date: 2022-03-17
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Publication No.: US11520249B2Publication Date: 2022-12-06
- Inventor: Kazuaki Nagaoka , Toru Ishii
- 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: JPJP2021-050145 20210324
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G15/16 ; G03G15/02

Abstract:
An electrophotographic member includes an electro-conductive substrate and an elastic layer containing inorganic particles and a binder resin. The electrophotographic member has a protrusion on an outer surface of the electrophotographic member containing the inorganic particles. At least part of the inorganic particles contained in the protrusion are exposed to a surface of the protrusion, and the binder resin is present among the inorganic particles contained in the protrusion. An elastic modulus E1 of the binder resin measured at a first region in a cross-section in a thickness direction of the elastic layer is equal to or above 1000 MPa.
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