Image forming apparatus

Details Image forming apparatus Image forming apparatus

2006-02-15

2008-11-11

Gray, David M (Department: 2852)

Electrophotography

Image formation

Transfer

C399S303000, C399S306000, C399S308000

Reexamination Certificate

active

07450894

ABSTRACT:
An image forming apparatus includes first and second toner image forming sections and a transfer unit. The first and second toner image forming sections include first and second image carriers and first and second intermediate transfer members, respectively. The color toner images are formed on the image carrier and then transferred onto the intermediate transfer member to form a composite color toner image on the intermediate transfer member. In a first mode, the first and second toner image forming sections form both the composite dark and light color toner images on the recording material. In a second mode, the second intermediate transfer member is moved out of contact with the transfer unit and the second image carrier and the second intermediate transfer member are not operated, so that only the first toner image forming section forms the composite dark color toner image on the recording material.

REFERENCES:
patent: 6999196 (2006-02-01), Ishida
patent: 7162192 (2007-01-01), Yamada et al.
patent: 2002-99127 (2002-04-01), None
patent: 2002-108039 (2002-04-01), None
patent: 2002-148893 (2002-05-01), None
patent: 2005-266419 (2005-09-01), None

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