Electrophotography – Image formation – Charging
Reexamination Certificate
2007-03-20
2010-06-01
Gray, David M (Department: 2852)
Electrophotography
Image formation
Charging
C399S171000, C399S173000
Reexamination Certificate
active
07729639
ABSTRACT:
There is provided a charging apparatus which has high durability and suffers from no rust etc. and of which controllability of charged potential of a photoreceptor is hardly impaired even with a some amount of contaminants such as a toner so that control of charged potential of a photoreceptor can be stably carried out to fall in an appropriate range over a long period of time, and moreover which is inexpensive. A charging apparatus includes a needle electrode, a holding member, two cleaner members, a support member, a moving member, a shield case, and a grid electrode. A length in minor axis of a secondary aggregate of polytetrafluoroethylene contained in a polytetrafluoroethylene-containing nickel layer formed on a surface of the needle electrode is twice or less than a layer thickness of the nickel layer.
REFERENCES:
patent: 5666604 (1997-09-01), Nakagami et al.
patent: 6025594 (2000-02-01), Bryce et al.
patent: 6261720 (2001-07-01), Kimiya et al.
patent: 2005/0047829 (2005-03-01), Nakane et al.
patent: 61231573 (1986-10-01), None
patent: 05-163581 (1993-06-01), None
patent: 05-163582 (1993-06-01), None
patent: 06-035294 (1994-02-01), None
patent: 10-007973 (1998-01-01), None
patent: 11-024373 (1999-01-01), None
patent: 11-040316 (1999-02-01), None
patent: 2001-166569 (2001-06-01), None
patent: 2001-226798 (2001-08-01), None
patent: 2002365835 (2002-12-01), None
patent: 2003-270993 (2003-09-01), None
patent: 2004-004334 (2004-01-01), None
JP 2005-99670 (Apr. 2005) claiming priority to same application as U.S. Patent Application Publication No. 2005/0047829.
JP 8-171257 (Jul. 1996) claiming priority to same application as U.S. Patent No. 5,666,604.
Deguchi Masanobu
Fujita Syouichi
Gray David M
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
Villaluna Erika
LandOfFree
Charging apparatus and image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Charging apparatus and image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charging apparatus and image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4215181