- 专利标题: Electro-conductive member for electrophotography, process cartridge for electrophotography, and electrophotographic image forming apparatus
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申请号: US16825611申请日: 2020-03-20
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公开(公告)号: US11347156B2公开(公告)日: 2022-05-31
- 发明人: Masahiro Kurachi , Kazuhiro Yamauchi , Satoru Nishioka , Kenji Takashima , Yuichi Kikuchi
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 代理机构: Venable LLP
- 优先权: JPJP2019-069098 20190329
- 主分类号: G03G5/10
- IPC分类号: G03G5/10 ; G03G21/18 ; G03G15/00
摘要:
The electro-conductive member has an electro-conductive support, and an electro-conductive layer in this order, the electro-conductive layer including a matrix and domains, the matrix constituted by a first rubber composition containing a cross-linked product of a first rubber, the domains having electro-conductivity, and dispersed in the matrix, each of the domains constituted by a second rubber composition containing a cross-linked product of a second rubber and an electro-conductive particle, the first rubber and the second rubber being diene-based rubbers, the first rubber having at least one monomer unit, the second rubber having at least one monomer unit different from the monomer unit which the first rubber has; a difference of absolute values of SP values between the first rubber and the second rubber is 0.2 (J/cm3)0.5 to 4.0 (J/cm3)0.5; and a tan δ1/tan δ2 is 0.45 to 2.00.
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