Charging member, process cartridge and electrophotographic...

Details Charging member, process cartridge and electrophotographic... Charging member, process cartridge and electrophotographic...

2011-06-14

2011-06-14

Nakarani, D. S (Department: 1787)

Electrophotography

Image formation

Charging

C361S225000, C428S447000, C428S450000, C428S451000, C492S056000

Reexamination Certificate

active

07962068

ABSTRACT:
An object of the present invention is to provide a charging member in which a toner, an additive for use in the toner, or the like is hard to adhere to the surface even under repeated use for a long time, and hence the charging and image output are made stable for a long time even if the charging member is used in the DC contact charging method, and a process cartridge and an electrophotographic apparatus having the charging member. The present invention provides a charging member comprising a support, a conductive elastic layer formed on the support, and a surface layer formed on the conductive elastic layer, characterized in that the surface layer contains a polysiloxane having a fluoroalkyl group and an oxyalkylene group, and a process cartridge and an electrophotographic apparatus having the charging member.

REFERENCES:
patent: 5625858 (1997-04-01), Hirai et al.
patent: 5725922 (1998-03-01), Nakamura et al.
patent: 7341813 (2008-03-01), Shigezaki et al.
patent: 0 496 399 (1992-07-01), None
patent: 0 510 643 (1992-10-01), None
patent: 10-221929 (1998-08-01), None
patent: 2002-169355 (2002-06-01), None
patent: 2003-107927 (2003-04-01), None

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