Process cartridge and electrophotographic apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 19, 2022
Grant Date -
N/A
app pub date -
Oct 14, 2020
filing date -
Oct 18, 2019
priority date (Note) -
In Force
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
Other Claims data not available
Family
International Classification(s)
- 2020 Application Filing Year
- G03G Class
- 2003 Applications Filed
- 1649 Patents Issued To-Date
- 82.33 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- G03G Class
- 69.76 % this patent is cited more than
- 3 Age
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