Image forming apparatus using constant voltage or constant curre

Details Image forming apparatus using constant voltage or constant curre Image forming apparatus using constant voltage or constant curre

1993-12-17

1996-05-28

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355208, G03G 1506

Patent

active

055216838

ABSTRACT:
A bias voltage including an AC voltage component is applied to a development sleeve. When the development sleeve opposes a non-image region of a photosensitive drum, a reference bias voltage including a constant current AC voltage component or a reference bias voltage including a constant voltage AC voltage component is applied to the development sleeve, and an AC voltage value or an AC current value applied to the development sleeve at that time is detected. An image formation factor is controlled on the basis of the detected AC voltage value or the detected AC current value.

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