Method and apparatus for image forming capable of...

Details Method and apparatus for image forming capable of... Method and apparatus for image forming capable of...

2006-05-09

2009-12-08

Beatty, Robert (Department: 2852)

Electrophotography

Control of electrophotography process

Control of charging

C399S044000

Reexamination Certificate

active

07630659

ABSTRACT:
A method and an apparatus of controlling a charge voltage including the steps of applying, charging, detecting, and determining. The applying step applies an application voltage having a direct-current voltage and an alternating-current voltage superimposed onto the direct-current voltage to a charge-applying member to charge a charge carrier. The changing step charges the alternating-current voltage of the application voltage. The detecting step detects an alternating current flowing through the charge carrier when the charge-applying member applies the application voltage to the charge carrier. The determining step determines a value of the alternating-current voltage of the application voltage based on at least two alternating currents detected by the alternating-current detector.

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