Image forming apparatus having a developing-device assembly...

Details Image forming apparatus having a developing-device assembly... Image forming apparatus having a developing-device assembly...

2005-03-15

2005-03-15

Ngo, Hoang (Department: 2852)

Electrophotography

Image formation

Development

C399S119000

Reexamination Certificate

active

06868245

ABSTRACT:
An image forming apparatus includes a developing-device assembly, developing rollers, roller drive gears, a transmission gear, a roller drive motor, a take-in gear, and a generator. The developing-device assembly rotates and stops at a development position where a developing device faces a photosensitive member, thereby switching a developing device to the next one. At the development position, the developing roller provided on each of the developing devices supplies toner to the photosensitive member, and the roller drive gear attached to each developing roller meshes with the transmission gear. The roller drive motor transmits mechanical power to the transmission gear via a power transmission path. The take-in gear disposed coaxial with a rotational center of the developing-device assembly is meshed with the transmission gear. The generator is housed in the developing-device assembly and has a gear meshing with the take-in gear.

REFERENCES:
patent: 5646721 (1997-07-01), Sugihara et al.
patent: 5655190 (1997-08-01), Fuchiwaki
patent: 6671480 (2003-12-01), Sugiyama
patent: 6684041 (2004-01-01), Yokomori et al.
patent: 5-066681 (1993-03-01), None
U.S. patent application Ser. No. 10/254,784, Hachisuga, filed Sep. 26, 2002.

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