Electrophotographic apparatus including a screen member for decr

Details Electrophotographic apparatus including a screen member for decr Electrophotographic apparatus including a screen member for decr

1980-03-10

1982-03-23

Moses, Richard L.

Photocopying

Including fiber optics

250324, G03G 1500

Patent

active

043209564

ABSTRACT:
An electrophotographic apparatus comprising a corona charger, a photosensitive and electrostatic-charge retentive drum including an electrically conductive substrate and a photosensitive layer having a narrower width than that of a record paper, and a screening member inserted between the corona charger and a peripheral part of the photosensitive and electrostatic-charge-retentive member for gradually decreasing a quantity of electrostatic charge charged at side edge portions of the photosensitive layer in a direction toward the side edges of the photosensitive layer, whereby black line and stripe can be prevented from appearing along the side edges of the record paper.

REFERENCES:
patent: 3467468 (1969-09-01), Johnson
patent: 3578970 (1971-05-01), Michaud et al.
patent: 3827799 (1974-08-01), Koizumi
IBM Tech. Disc. Bull., "Charge Corona Edge Shield", p. 2060, vol. 15, No. 7, Dec. 1972.

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