Invention Grant
- Patent Title: Electrophotographic member having a surface layer with a cross-linked urethane resin-containing matrix, process cartridge, and apparatus
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Application No.: US16821131Application Date: 2020-03-17
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Publication No.: US10942471B2Publication Date: 2021-03-09
- Inventor: Yoshinobu Ogawa , Ryo Sugiyama , Kazuaki Nagaoka , Kenta Matsunaga , Toru Ishii , Hideya Arimura , Fumihiko Utsuno , Tomoya Uesugi , Wataru Moriai , Masashi Uno
- 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: JPJP2019-069102 20190329,JPJP2019-187337 20191011
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G21/18

Abstract:
The electrophotographic member includes: an electroconductive substrate; and a surface layer having a mono-layer structure, wherein the surface layer has a matrix containing a cross-linked urethane resin as a binder, and when an elastic modulus of the matrix in a first region in a thickness direction from an outer surface of the surface layer to a depth of 0.1 μm from the outer surface of the surface layer is defined as E1, and an elastic modulus of the matrix in a second region in a thickness direction from a depth of 1.0 μm from the outer surface of the surface layer to 1.1 μm from the outer surface of the surface layer is defined as E2, E1 and E2 satisfy the following Expressions (1) and (2), respectively: E1≥200 MPa (1); and 10 MPa≤E2≤100 MPa (2).
Public/Granted literature
- US20200310283A1 ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS Public/Granted day:2020-10-01
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