PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
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United States of America
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N/A
Issued Date -
Apr 22, 2021
app pub date -
Oct 14, 2020
filing date -
Oct 14, 2020
priority date (Note) -
Published
status (Latency Note)
Importance
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
First Claim
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Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- G03G Class
- 56.11 % this patent is cited more than
- 4 Age