Color image forming apparatus using base-layer

Electrophotography – Image formation – Transfer

Reexamination Certificate

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Details

C399S302000, C399S358000, C399S359000

Reexamination Certificate

active

07398041

ABSTRACT:
A color image forming apparatus1includes: a multiple number of process printing units20, each having an photoreceptor drum21for bearing a developer image formed with a toner corresponding to a different color of color-separated image information; a transfer belt31to which a multiple number of developer images are comprised in layers; and a transfer roller36for transferring the developer images that have been comprised in layers on transfer belt31, all at once, to recording paper, wherein the multiple number of process printing units20are arranged along transfer belt31, and is characterized in that among the developer images to be transferred from the photoreceptor drums21of multiple image forming units20onto transfer belt31, the toner for the developer image of the color to be transferred first is specified to produce a base-layer of the color images of information.

REFERENCES:
patent: 5103260 (1992-04-01), Tompkins et al.
patent: 6175702 (2001-01-01), Takeuchi et al.
patent: 6650853 (2003-11-01), Sumikawa et al.
patent: 11194576 (1999-07-01), None
patent: 2000-190572 (2000-07-01), None
patent: 2002-099127 (2002-04-01), None
patent: 2004020661 (2004-01-01), None

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