Charge control system for xerographic machines

Details Charge control system for xerographic machines Charge control system for xerographic machines

1976-10-27

1981-02-03

Pellinen, A. D.

Photocopying

Including fiber optics

323268, G03G 1502

Patent

active

042485193

ABSTRACT:
Apparatus for controlling the charge level on the photoconductive surface of a reproduction machine to enhance imaging. A corona generator is used to initially charge the photoconductive surface following which the charge is examined and compared with a preselected reference charge. Where an overcharge is found, a lamp, the illumination intensity of which is matched to the degree of overcharge, is actuated to reduce the charge level on the photoconductive surface to substantially the same as the reference charge. Where an undercharge is found, a supplemental charging device is actuated to the degree necessary to bring the charge level up to the reference charge.

REFERENCES:
patent: 2956487 (1960-10-01), Giaimo
patent: 3586908 (1971-06-01), Vosteen
patent: 3654893 (1972-04-01), Piper et al.
patent: 3789223 (1974-01-01), Sato
patent: 3843885 (1974-10-01), Sato et al.
patent: 3944354 (1976-03-01), Benwood et al.
patent: 4008954 (1977-02-01), Ogawa et al.
patent: 4026643 (1977-05-01), Bergman

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