Color image forming apparatus

Electrophotography – Image formation – Development

Reexamination Certificate

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Reexamination Certificate

active

06925276

ABSTRACT:
An image forming apparatus has a positioning device which positions an image carrier out of contact with a revolver unit that holds a plurality of developing rollers in a direction of rotation, thereby defining a predetermined gap between each developing roller and the image carrier at a developing position.

REFERENCES:
patent: 5565973 (1996-10-01), Fujishiro et al.
patent: 5585598 (1996-12-01), Kasahara et al.
patent: 5991569 (1999-11-01), Sugihara et al.
patent: 6122469 (2000-09-01), Miura et al.
patent: 6647232 (2003-11-01), Suzuki
patent: 60-214377 (1985-10-01), None
patent: 05-323795 (1993-12-01), None

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