Image forming apparatus having a function to charge at a low mai

Details Image forming apparatus having a function to charge at a low mai Image forming apparatus having a function to charge at a low mai

1994-03-16

1995-11-21

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355208, 355219, G03G 1500

Patent

active

054692431

ABSTRACT:
For an image forming apparatus having a photoreceptor whose surface is charged by a main charger unit, a function is provided that a desired electric potential is attained on the photoreceptor surface by applying a lowest main charging voltage to the charger unit. By providing a plurality of grid voltages, it is possible that there are a plurality of main charging voltages suitable for the desired surface potential, and the lowest main charging voltage and the corresponding grid voltage can be selected thereamong.

REFERENCES:
patent: 3688107 (1972-08-01), Schneider et al.
patent: 4277549 (1981-07-01), Tatsumi et al.
patent: 4564287 (1986-01-01), Suzuki et al.
patent: 4811045 (1989-03-01), Matsushita et al.
patent: 5164776 (1992-11-01), Oresick et al.
patent: 5212560 (1993-05-01), Hattori et al.
patent: 5270660 (1993-12-01), Werner, Jr. et al.
patent: 5274424 (1993-12-01), Hattori et al.

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