Image forming apparatus with dual voltage supplies for selective

Details Image forming apparatus with dual voltage supplies for selective Image forming apparatus with dual voltage supplies for selective

1991-04-15

1992-11-17

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

361225, G03G 1502

Patent

active

051647796

ABSTRACT:
An image forming apparatus includes a charger for charging an image bearing member. The charger includes a charging member contacted to the image bearing member and supplied with a voltage. The charger functions both as discharging device and charging device by switching a voltage applied thereto. The apparatus is made smaller, simpler and less expensive in cost.

REFERENCES:
patent: 4123154 (1978-10-01), Fisher
patent: 4380384 (1983-04-01), Ueno et al.
patent: 4387980 (1983-06-01), Ueno et al.
patent: 4640599 (1987-02-01), Doutney
patent: 4657369 (1987-04-01), Takeuchi
patent: 4851960 (1990-07-01), Nakamura et al.

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