Charging unit with variable AC voltage

Details Charging unit with variable AC voltage Charging unit with variable AC voltage

1994-04-18

1995-10-10

Grimley, A. T.

Photocopying

Contact printing

Light boxes

361225, G03G 1502

Patent

active

054575222

ABSTRACT:
An image forming apparatus uses a contact-type charger to charge a photoreceptor. The D.C. current supplied to the charger is measured while the output value of the A.C. voltage is changed within a predetermined range, and the output value of the A.C. voltage is set in accordance with the measurement result.

REFERENCES:
patent: 4174903 (1979-11-01), Snelling
patent: 4456825 (1984-06-01), Kuge et al.
patent: 4922299 (1990-05-01), Uchimoto et al.
patent: 5164779 (1992-11-01), Araya et al.
patent: 5305177 (1994-04-01), Aoki et al.
patent: 5307122 (1994-04-01), Ohno et al.
patent: 5351109 (1994-09-01), Haneda

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