Title:
CHARGING ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/050616
Kind Code:
A1
Abstract:
A charging roller having stable charging performance and capable of suppressing generation of "fog" in an electrophotographic image. Specifically disclosed is a charging roller for contact charging, which comprises a conductive support and a surface layer. The surface layer contains a binder, resin particles containing carbon black and dispersed in the binder, and graphite particles dispersed in the binder. The surface of the surface layer has projected portions formed because of the resin particles and projected portions formed because of the graphite particles. Those projected portions have a specific relation.
Inventors:
FURUKAWA TAKUMI (JP)
TANIGUCHI TOMOHITO (JP)
MATSUDA HIDEKAZU (JP)
YAGISAWA YUSUKE (JP)
TANIGUCHI TOMOHITO (JP)
MATSUDA HIDEKAZU (JP)
YAGISAWA YUSUKE (JP)
Application Number:
PCT/JP2009/068937
Publication Date:
May 06, 2010
Filing Date:
October 29, 2009
Export Citation:
Assignee:
CANON KK (JP)
FURUKAWA TAKUMI (JP)
TANIGUCHI TOMOHITO (JP)
MATSUDA HIDEKAZU (JP)
YAGISAWA YUSUKE (JP)
FURUKAWA TAKUMI (JP)
TANIGUCHI TOMOHITO (JP)
MATSUDA HIDEKAZU (JP)
YAGISAWA YUSUKE (JP)
International Classes:
G03G15/02
Foreign References:
| JP2009156906A | 2009-07-16 | |||
| JP2001092221A | 2001-04-06 | |||
| JPH0457073A | 1992-02-24 | |||
| JP2005037931A | 2005-02-10 | |||
| JP2007127777A | 2007-05-24 | |||
| JP2008281599A | 2008-11-20 |
Other References:
See also references of EP 2345937A4
Attorney, Agent or Firm:
OKABE, Masao et al. (JP)
Masao Okabe (JP)
Masao Okabe (JP)
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