Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-03-08

2009-11-17

Meier, Stephen D (Department: 2853)

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

C347S116000, C347S119000, C347S124000, C399S179000

Reexamination Certificate

active

07619642

ABSTRACT:
An image forming apparatus in which a plurality of color component images of different colors, which include a reference color (e.g. black) serving as a reference and adjustment colors (e.g. cyan, magenta and yellow) to be adjusted, are formed on respective photosensitive drums and then transferred to a transfer belt. Respective positions of the color component images transferred to the transfer belt are detected by a CCD. Timing adjustment can be performed so that the difference between the detected position of each of the color component images and a prescribed position is not more than a predetermined value, based on the reference color image as the reference. In this case, the color component images are formed on the corresponding photosensitive drums with the same timing by utilizing a single polygon mirror.

REFERENCES:
patent: 6163327 (2000-12-01), Mori et al.
patent: 6593951 (2003-07-01), Yokoyama et al.
patent: 6864906 (2005-03-01), Yokoyama
patent: 04-149478 (1992-05-01), None
patent: 09-146329 (1997-06-01), None
patent: 2001-142278 (2001-05-01), None

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