Image forming apparatus with means of preventing backside...

Details Image forming apparatus with means of preventing backside... Image forming apparatus with means of preventing backside...

2005-10-07

2009-12-29

Gray, David M (Department: 2852)

Electrophotography

Control of electrophotography process

Control of developing

C399S066000, C399S314000

Reexamination Certificate

active

07639961

ABSTRACT:
An image forming apparatus, includes: a photoreceptor on which a toner image is formed by a charging device, an image exposure device and a developing device; and a transfer section for transferring the toner image on the photoreceptor. DC bias and AC bias voltage is applied to a development roller of the developing device, and the DC bias and AC bias voltage is set to regular value for an image area on the photoreceptor, and only the AC bias voltage is changed for a non-image area on the photoreceptor.

REFERENCES:
patent: 5132738 (1992-07-01), Nakamura et al.
patent: 2004/0114951 (2004-06-01), Kawagoe
patent: 2005/0180767 (2005-08-01), Ishii et al.
patent: 2004-264646 (2004-09-01), None
patent: 2001-350323 (2004-11-01), None
Office Action mailed Mar. 3, 2009 from the Japan Patent Office for Japanese Application No. 2005-193681 and English language translation thereof.

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