Electrophotography – Control of electrophotography process – Control of developing
Reexamination Certificate
2011-07-26
2011-07-26
Beatty, Robert (Department: 2852)
Electrophotography
Control of electrophotography process
Control of developing
C399S282000, C399S283000, C399S285000
Reexamination Certificate
active
07986892
ABSTRACT:
Provided are a developing device and an image forming apparatus, the developing device which employs a two-component developer wherein development hysteresis (ghost) is reduced and deterioration of a carrier is stably suppressed, and high-quality images are thus realized for a long period of time. The developing device, which uses a developer including toner, carrier and reverse polarity particles which are charged to have a polarity reverse to that of the toner, performs a collecting operation for collecting the reverse polarity particles at a timing in which image formation is not affected by a collecting operation, where the reverse polarity particles are accumulated in the area enclosed by a toner carrying member, a developer carrying member for toner supply and developer carrying member for collecting toner are collected into a developer container.
REFERENCES:
patent: 5802430 (1998-09-01), Wada
patent: 5832350 (1998-11-01), Kumasaka et al.
patent: 5963768 (1999-10-01), Rhee
patent: 5991587 (1999-11-01), Kikuchi
patent: 6347208 (2002-02-01), Yamamoto
patent: 6381424 (2002-04-01), Takahashi et al.
patent: 6512909 (2003-01-01), Ozawa et al.
patent: 6721516 (2004-04-01), Aoki et al.
patent: 7263320 (2007-08-01), Hirayama et al.
patent: 7689150 (2010-03-01), Uetake et al.
patent: 7734227 (2010-06-01), Uetake et al.
patent: 7738814 (2010-06-01), Matsuura et al.
patent: 7761041 (2010-07-01), Maeyama et al.
patent: 7835676 (2010-11-01), Goto et al.
patent: 2007/0071506 (2007-03-01), Uetake et al.
patent: 2007/0212122 (2007-09-01), Maeyama et al.
patent: 2008/0219712 (2008-09-01), Hirayama et al.
patent: 59-100471 (1984-06-01), None
patent: 59-172662 (1984-09-01), None
patent: 01124880 (1989-05-01), None
patent: 09-185247 (1997-07-01), None
patent: 10-319708 (1998-12-01), None
patent: 10-340003 (1998-12-01), None
patent: 11249428 (1999-09-01), None
patent: 2000-298396 (2000-10-01), None
patent: 2002-108104 (2002-04-01), None
patent: 2003-057882 (2003-02-01), None
patent: 2003-215855 (2003-07-01), None
patent: 2005-189708 (2005-07-01), None
patent: 2007-108673 (2007-04-01), None
Hirayama Junya
Maeyama Takeshi
Natsuhara Toshiya
Uetake Shigeo
Beatty Robert
Brinks Hofer Gilson & Lione
Konica Minolta Business Technologies Inc.
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