Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2006-01-31
2008-05-06
Gray, David M. (Department: 2852)
Electrophotography
Image formation
Photoconductive member
Reexamination Certificate
active
07369795
ABSTRACT:
An image forming apparatus includes a plurality of process cartridges. Each process cartridge includes an image carrier configured to form an image intermediately, a drive transfer member engaged with the image carrier, a drive mechanism configured to drive to rotate the image carrier via the drive transfer member, a marking member mounted on the drive transfer member and configured to indicate a rotational position of the drive transfer member, a detector configured to detect the rotational position by detecting the marking member, and a balancer mounted on the drive transfer member configured to match a weighted center of the drive transfer member with a shaft center of the image carrier. A controller is configured to adjust rotational phases of the image carriers based on results detected by the detector.
REFERENCES:
patent: 7206537 (2007-04-01), Funamoto et al.
patent: 2005/0058470 (2005-03-01), Funamoto et al.
patent: 2005/0084293 (2005-04-01), Fukuchi et al.
patent: 2005/0207799 (2005-09-01), Ebara
patent: 09-146329 (1997-06-01), None
patent: 2001-305820 (2001-11-01), None
U.S. Appl. No. 11/500,306, filed Aug. 8, 2006, Funamoto.
Ebara Joh
Funamoto Noriaki
Uchida Toshiyuki
Gray David M.
LaBombard Ruth N
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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