Charge-erasing device for electrophotographic copying apparatus

Details Charge-erasing device for electrophotographic copying apparatus Charge-erasing device for electrophotographic copying apparatus

1977-01-10

1979-01-09

Moses, Richard L.

Photocopying

Including fiber optics

355 7, 355 71, G03G 1500

Patent

active

041336097

ABSTRACT:
A charge-erasing unit for an electrophotographic reproducing machine utilizing a single, continuously illuminated light source during the reproduction cycle for erasing the charges in selected intermediate and marginal areas of a moving photosensitive member. Selection of the erasure areas is controlled by use of at least one narrow shutter movable into various positions in accordance with the size of the image reproduced, the shutter being completely withdrawn during passage of the intermediate area under the light source.

REFERENCES:
patent: 3578970 (1971-05-01), Michaud
patent: 3724940 (1973-04-01), Koizumi
patent: 3724942 (1973-04-01), Gibson et al.
patent: 3792913 (1974-02-01), Simmons
patent: 3869202 (1975-03-01), Tabata et al.
patent: 3901593 (1975-08-01), Kogiso et al.
IBM Tech. Disclosure Bull.; vol. 16, No. 4, pp. 1262-1263; Bellamy; Sep. 1973.

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