Developing device driver and an image forming apparatus...

Details Developing device driver and an image forming apparatus... Developing device driver and an image forming apparatus...

2006-07-07

2009-10-27

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S119000, C399S223000, C399S279000

Reexamination Certificate

active

07610000

ABSTRACT:
A developing device driver according to the present invention includes a developing roller gear connected to each developing roller to develop an electrostatic latent image formed on a photoconductive medium with developer having predetermined color, a driving source for generating power for rotating the developing roller gear, a driving gear driven by the power transmitted from the driving source, and a power switching gear provided with power from the driving gear and rotated along a circumference of the driving gear, and a rotation unit. The rotation unit rotates the power switching gear to place the power switching gear into contact with and separate the gear from the developing roller gears to selectively drive one developing roller.

REFERENCES:
patent: 5585898 (1996-12-01), Fujii
patent: 6609707 (2003-08-01), Yano
patent: 6868245 (2005-03-01), Kinouchi
patent: 2005/0041996 (2005-02-01), Kishigami
patent: 2005/0180779 (2005-08-01), Okamoto
patent: 2002-099129 (2002-04-01), None
patent: 2003-215880 (2003-07-01), None
patent: 2003-263004 (2003-09-01), None
patent: 2003-329090 (2003-11-01), None
patent: 1020040000746 (2004-01-01), None
Chinese Office Action Dated Mar. 31, 2009.

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