Electrophotography – Image formation – Transfer
Reexamination Certificate
2007-03-19
2009-12-01
Gray, David M (Department: 2852)
Electrophotography
Image formation
Transfer
C399S040000
Reexamination Certificate
active
07627277
ABSTRACT:
An image forming apparatus, including a compensation pattern forming device to form a predetermined compensation pattern to compensate image displacement in each key color, a plurality of detectors to detect two key colors in the predetermined compensation pattern, and a compensating device to compensate the image displacement of the two key colors detected by the detectors.
REFERENCES:
patent: 2004/0160506 (2004-08-01), Maeda
patent: 2004/0239747 (2004-12-01), Maeda
patent: 2005/0200689 (2005-09-01), Shinohara et al.
patent: 1 575 258 (2005-09-01), None
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patent: 2000-112205 (2000-04-01), None
patent: 2004-295083 (2004-10-01), None
U.S. Appl. No. 12/107,387, filed Apr. 22, 2008, Maeda.
Gray David M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
Wong Joseph S
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