Electrophotography – Image formation – Development
Reexamination Certificate
2006-04-11
2006-04-11
Bennett, G. Bradley (Department: 2859)
Electrophotography
Image formation
Development
C399S267000
Reexamination Certificate
active
07027761
ABSTRACT:
A developer carrier for an SLIC developing system includes a developing sleeve and a magnetic roll having a plurality of magnetic poles. A narrow development nip is formed by narrowing the width of a development pole forming a magnet brush and by narrowing a developer rising region in a developing region where a flux density attenuation ratio of the development pole is 40% or more. A half-value width of the flux density of the development pole is 22° or less and the flux density variation rate is 4.0 mT/Deg or more in a circumferential direction in a part where the flux density in at least half of that of a downstream side of a developer carrying direction from a peak magnetic force position of the development pole is 90% or less.
REFERENCES:
patent: 5212344 (1993-05-01), Kageyama et al.
patent: 5970294 (1999-10-01), Narita et al.
patent: 6070038 (2000-05-01), Imamura et al.
patent: 6085062 (2000-07-01), Mizuishi et al.
patent: 6112042 (2000-08-01), Imamura et al.
patent: 6128449 (2000-10-01), Zenba et al.
patent: 6144811 (2000-11-01), Ohori et al.
patent: 6144822 (2000-11-01), Yamaguchi et al.
patent: 6148161 (2000-11-01), Usui et al.
patent: 6160969 (2000-12-01), Ishigaki et al.
patent: 6198895 (2001-03-01), Tsuda et al.
patent: 6266501 (2001-07-01), Mizuishi et al.
patent: 6287246 (2001-09-01), Yoshii et al.
patent: 6330415 (2001-12-01), Imamura et al.
patent: 6337957 (2002-01-01), Tamaki et al.
patent: 6379759 (2002-04-01), Kamoi et al.
patent: 6449452 (2002-09-01), Kai
patent: 6522855 (2003-02-01), Katoh et al.
patent: 6628903 (2003-09-01), Ohori et al.
patent: 6665511 (2003-12-01), Takeuchi et al.
patent: 6697593 (2004-02-01), Imamura et al.
patent: 2003/0039487 (2003-02-01), Ikeguchi
patent: 2004/0028428 (2004-02-01), Sugihara
patent: 2004/0126147 (2004-07-01), Kondo et al.
patent: 2004/0190946 (2004-09-01), Enoki et al.
patent: 2004/0258431 (2004-12-01), Suzuki
patent: 2005/0135843 (2005-06-01), Kakegawa et al.
Imamura Tsuyoshi
Kakegawa Mieko
Kamiya Noriyuki
Kamoi Sumio
Koetsuka Kyohta
Bennett G. Bradley
Ricoh & Company, Ltd.
LandOfFree
Developing device and an image forming apparatus including... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Developing device and an image forming apparatus including..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing device and an image forming apparatus including... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3541111