- 专利标题: ELECTROPHOTOGRAPHIC APPARATUS, PROCESS CARTRIDGE AND CARTRIDGE SET
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申请号: US17071103申请日: 2020-10-15
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公开(公告)号: US20210116828A1公开(公告)日: 2021-04-22
- 发明人: Noriyoshi Umeda , Tsuneyoshi Tominaga , Shohei Tsuda , Shohei Kototani , Masahiro Kurachi , Kazuhiro Yamauchi , Hideo Kihara
- 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
- 优先权: JP2019-191587 20191018
- 主分类号: G03G9/08
- IPC分类号: G03G9/08 ; G03G5/05 ; G03G21/18
摘要:
An electrophotographic apparatus comprising an electrophotographic photosensitive member, a charging device, and a developing device, wherein the charging device comprises a conductive member arranged to be capable of contacting the electrophotographic photosensitive member, a conductive layer on the conductive member outer surface comprises a matrix and a plurality of domains dispersed in the matrix, at least some of the domains are exposed at the conductive member outer surface, the matrix has a volume resistivity of larger than 1.00×1012 Ω·cm and is 1.0×105 times or more one of the domains, the developing device comprises the toner comprising a toner particle, fine particles A and B, the fine particle A has a volume resistivity of 1.0×103 to 1.0×1010 Ω·cm, and the fine particle B is silica fine particle and having a volume resistivity of 1.0×1011 to 1.0×1017 Ω·cm.
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