Color-image forming device and method of controlling the same

Electrophotography – Image formation – Transfer

Reexamination Certificate

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C399S043000

Reexamination Certificate

active

07113732

ABSTRACT:
A color-image forming device is provided with: a color-image forming unit for forming a color image by superimposing a plurality of images corresponding to a plurality of colors onto a recording medium. An automatic color-drift correction executes color-drift correction of color drift generated during the superimposition of the images. A color-drift correction execution interval setting unit variably sets the color-drift correction execution intervals, at which intervals the automatic color-drift correction executes the color-drift correction. The functions of the automatic color-drift correction and the color-drift correction execution interval setting unit are realized by the system control unit.

REFERENCES:
patent: 5881173 (1999-03-01), Ohmori
patent: 6160640 (2000-12-01), Ohmori
patent: 6310681 (2001-10-01), Taniwaki
patent: 6327453 (2001-12-01), Imaizumi et al.
patent: 6832060 (2004-12-01), Tanaka et al.
patent: 2000-305340 (2000-11-01), None
patent: 2003-98793 (2003-04-01), None
patent: 2003-186278 (2003-07-01), None
U.S. Appl. No. 09/919,570 of Ohmori, filed Jul. 31, 2001.
U.S. Appl. No. 10/010,875 of Ohmori, filed Nov. 12, 2001.
U.S. Appl. No. 10/230,532 of Ohmori et al., filed Aug. 29, 2002.

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