Electrophotographic image recording apparatus using amorphous si

Details Electrophotographic image recording apparatus using amorphous si Electrophotographic image recording apparatus using amorphous si

1990-03-26

1991-04-02

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355215, 355219, 355274, 355297, 355300, G03G 1502, G03G 1516, G03G 2100

Patent

active

050050516

ABSTRACT:
An electrophotographic recording apparatus using an amorphous silicon hydride photosensitive drum for recording images through processes comprising uniformly charging the drum, exposing the drum to light to form a latent image thereon, developing the latent image and transferring the developed image onto a recording medium wherein the charging and transferring processes are implemented by corona dischargers. To prevent pale or blurred image recording which occurs when the image recording is resumed after expiration of a long period of time, a shielding means is provided in association with each of the corona dischargers for shielding the corona discharger to interrupt atmospheric contact with the peripheral surface of the photosensitive drum.

REFERENCES:
patent: 3510903 (1970-05-01), Stoever et al.
patent: 4093368 (1978-06-01), Nishikawa
patent: 4607936 (1986-08-01), Miyakawa et al.

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