Electrophotography – Control of electrophotography process – Control of transfer
Reexamination Certificate
2011-04-19
2011-04-19
Royer, William J (Department: 2852)
Electrophotography
Control of electrophotography process
Control of transfer
C399S298000, C399S302000
Reexamination Certificate
active
07929877
ABSTRACT:
An image forming apparatus includes an intermediate transfer belt, a photosensitive belt, a primary transfer roller, a secondary-transfer opposing roller, and a secondary transfer roller. The photosensitive belt comes into contact with a surface of the intermediate transfer belt to form a primary transfer nip. The secondary-transfer opposing roller comes into contact with the surface of the intermediate transfer belt to form a secondary transfer nip. The closest distance between a surface of the photosensitive belt and that of the primary transfer roller is greater than the thickness of the intermediate transfer belt. A toner image on the intermediate transfer belt is transferred onto a recording sheet at the secondary transfer nip while a transfer bias is applied to the secondary transfer roller.
REFERENCES:
patent: 6336025 (2002-01-01), Saeki
patent: 6405002 (2002-06-01), Ogiyama et al.
patent: 6904255 (2005-06-01), Kera et al.
patent: 7277657 (2007-10-01), Uchida et al.
patent: 7277667 (2007-10-01), Saito et al.
patent: 7639975 (2009-12-01), Ishida
patent: 2005/0078991 (2005-04-01), Kimura et al.
patent: 2006/0056884 (2006-03-01), Sawai et al.
patent: 2006/0210307 (2006-09-01), Katoh et al.
patent: 2006/0210324 (2006-09-01), Kuma et al.
patent: 2006/0284958 (2006-12-01), Saeki et al.
patent: 2006/0285973 (2006-12-01), Keller
patent: 2007/0098472 (2007-05-01), Saeki et al.
patent: 2007/0110464 (2007-05-01), Nakayama et al.
patent: 2007/0127947 (2007-06-01), Kuma et al.
patent: 2007/0127955 (2007-06-01), Katoh et al.
patent: 1115879 (1996-01-01), None
patent: 1497389 (2004-05-01), None
patent: 5-11562 (1993-01-01), None
patent: 2001-134109 (2001-05-01), None
patent: 2004-109575 (2004-04-01), None
patent: 2004-142920 (2004-05-01), None
patent: 2006-65113 (2006-03-01), None
patent: 2006-154233 (2006-06-01), None
patent: WO 02/069056 (2002-09-01), None
patent: WO 02/099536 (2002-12-01), None
U.S. Appl. No. 12/828,612, filed Jul. 1, 2010, Furuya, et al.
Furuya Masaharu
Nakayama Takahiro
Saeki Kazuchika
Sekine Takuya
Yamaguchi Toshitaka
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
Royer William J
LandOfFree
Transfer device and image forming apparatus having at least... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transfer device and image forming apparatus having at least..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transfer device and image forming apparatus having at least... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2668780