Title:
プロセスカートリッジ及び電子写真装置
Document Type and Number:
Japanese Patent JP7337649
Kind Code:
B2
Abstract:
A process cartridge which allows any spot and stripe as image defects to be suppressed is provided. A process cartridge, in which an electroconductive layer of a charging member has a matrix including a first rubber, and domains dispersed in the matrix, the domains include a second rubber and an electron electroconductive agent, at least some of the domains are exposed on a surface of the charging member, when a volume resistivity of the matrix is 105 times or more a volume resistivity of the domains, a protective layer of an electrophotographic photosensitive member includes a metal oxide particle, and when a number average primary particle size of the metal oxide particle is defined as Sm and an average value of equivalent circle diameters of the domains is defined as Sd, the Sd/Sm satisfies the following expression (1): 0.5
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Inventors:
Meng Nishida
Yuka Ishizuka
Kenichi Kaku
Nobuhiro Nakamura
Hiroyuki Watanabe
Hideharu Shimozawa
Atsushi Okuda
Yuichi Kikuchi
Kazuhiro Yamauchi
Yuka Ishizuka
Kenichi Kaku
Nobuhiro Nakamura
Hiroyuki Watanabe
Hideharu Shimozawa
Atsushi Okuda
Yuichi Kikuchi
Kazuhiro Yamauchi
Application Number:
JP2019191563A
Publication Date:
September 04, 2023
Filing Date:
October 18, 2019
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G15/02; G03G5/147
Domestic Patent References:
JP201772833A | ||||
JP2012163954A | ||||
JP2004151695A | ||||
JP2001254022A | ||||
JP201995700A |
Attorney, Agent or Firm:
Okabe
Takao Ochi
Koji Yoshizawa
Aki Honda
Takao Ochi
Koji Yoshizawa
Aki Honda
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