Image forming apparatus and phase adjustment of image...

Details Image forming apparatus and phase adjustment of image... Image forming apparatus and phase adjustment of image...

2007-07-03

2007-07-03

Chen, Sophia S. (Department: 2852)

Electrophotography

Image formation

Photoconductive member

C399S082000, C399S301000

Reexamination Certificate

active

11101575

ABSTRACT:
An image forming apparatus capable of operating in a full-color mode or in a monochrome mode includes a first driving mechanism, a second driving mechanism, a transfer member, and a controller. The first driving mechanism drives the color image carriers and the second driving mechanism drives a black image carrier in a first direction to form a color and black toner images on a transfer member. The controller synchronizes the first driving mechanism and the second driving mechanism after conducting an image forming operation in the full-color mode or in the monochrome mode to conduct a phase alignment between the color image carriers and the black image carrier.

REFERENCES:
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patent: 2003/0021613 (2003-01-01), Koide
patent: 2003/0152402 (2003-08-01), Ehara et al.
patent: 2003/0180072 (2003-09-01), Ohashi et al.
patent: 2004/0161263 (2004-08-01), Ehara
patent: 2004/0223785 (2004-11-01), Abe
patent: 2005/0084293 (2005-04-01), Fukuchi et al.
patent: 1 429 201 (2004-06-01), None
patent: 2002-311672 (2002-10-01), None

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