Development device and image forming apparatus

Details Development device and image forming apparatus Development device and image forming apparatus

2008-11-26

2011-11-29

Gray, David (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

08068773

ABSTRACT:
A development device includes a developer carrier and a developer supply belt. The developer carrier, disposed in contact with an image carrier carrying an electrostatic latent image, carries developer to be charged with a prescribed polarity and develops the electrostatic latent image by application of development voltage. The developer supply belt includes a first roller, a second roller, and a belt. The belt is tightly stretched by the first roller and the second roller, and is disposed in contact with the developer carrier from a contact beginning portion to a contact finishing portion. A potential difference between the development voltage and the voltage of the contact finishing portion is arranged to be zero (0) V or above and 600 V or below.

REFERENCES:
patent: 7801470 (2010-09-01), Minegishi et al.
patent: 2003/0026629 (2003-02-01), Kawamura et al.
patent: 2002-108090 (2002-04-01), None

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