Charging device, image forming apparatus, computer readable...

Details Charging device, image forming apparatus, computer readable... Charging device, image forming apparatus, computer readable...

2007-05-22

2009-06-02

Thompson, Timothy J (Department: 4175)

Electrophotography

Control of electrophotography process

Control of charging

C399S044000, C399S089000

Reexamination Certificate

active

07542689

ABSTRACT:
A charging device includes a charging member that charges a body to be charged; a detector that detects an AC component of a current flowing through the charging member; an integration section that integrates the AC component of the current detected by the detector; a controller that controls the current flowing through the charging member, according to a result of integration executed by the integration section; a periodic signal generating section that generates a periodic signal having a cycle period corresponding to a cycle period of the AC component; and an integration period adjusting section that adjusts a period of integration executed by the integration section, with reference to the periodic signal.

REFERENCES:
patent: 6532347 (2003-03-01), Watanabe et al.
patent: 7024125 (2006-04-01), Ishii et al.
patent: 2001/0055496 (2001-12-01), Shimura et al.
patent: 2005/0002681 (2005-01-01), Takahashi et al.
patent: 2001-201919 (2001-07-01), None
patent: 2004-333789 (2004-11-01), None

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