Transfer voltage control method of image forming apparatus

Details Transfer voltage control method of image forming apparatus Transfer voltage control method of image forming apparatus

2011-04-12

2011-04-12

Gray, David M (Department: 2852)

Electrophotography

Control of electrophotography process

Control of transfer

C399S121000, C399S302000, C399S308000, C399S313000, C399S314000

Reexamination Certificate

active

07925176

ABSTRACT:
A transfer voltage control method of an image forming apparatus includes supplying a first measurement voltage to a first transfer member and a second transfer member, measuring a variation in resistance of the first transfer member by supplying a second measurement voltage to the first transfer member during a first period of time, and measuring a variation in resistance of the second transfer member by supplying the second measurement voltage during a second period of time. Therefore, it is capable of measuring accurately a variation in resistance of a transfer unit, such that an optimum transfer voltage may be set. Accordingly, transfer quality of an image forming apparatus is improved.

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patent: 7062186 (2006-06-01), Kyung
patent: 7580650 (2009-08-01), Kitamura
patent: 5-6112 (1993-01-01), None
patent: 8-160784 (1996-06-01), None
patent: 2000-162888 (2000-06-01), None

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