Color image forming apparatus and mono color printing method...

Details Color image forming apparatus and mono color printing method... Color image forming apparatus and mono color printing method...

2006-03-28

2008-11-04

Chen, Sophia S (Department: 2852)

Electrophotography

Control of electrophotography process

Control of cleaning

C399S066000, C399S101000

Reexamination Certificate

active

07447455

ABSTRACT:
Disclosed are a color image forming apparatus for mono color printing and a method thereof. The apparatus includes photoconductors, a charger, a development unit for forming a developer image on each of the photoconductors, a transfer unit including an image transfer member for receiving the developer image from each of the photoconductors and a transfer voltage supply member for supplying a transfer bias voltage to the image transfer member, a first cleaning unit for cleaning the photoconductors, and a control unit for controlling the photoconductors, charger, development unit and transfer unit in a mono color printing mode to form a developer image on an image area of a selected photoconductor, to transfer the formed developer image to a non-image area of the image transfer member, and to divide the transferred developer image into portions and reverse-transfer the divided portions from the image transfer member to remaining photoconductors.

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Machine translation of JP 2003-076103 A dated Mar. 13, 2008.

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