Electrophotographic copying machine

Details Electrophotographic copying machine Electrophotographic copying machine

1980-09-11

1982-12-21

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 3BE, 355 14CH, 313238, G03G 1500

Patent

active

043646565

ABSTRACT:
An electrophotographic copying machine includes a photosensitive member in the form of an endless belt which repeats a stop and an angular motion. A carriage reciprocates above a flat run of the photosensitive member in parallel relationship therewith when the latter is at rest. A charger, an illumination unit, an optical system and a high tension generator are mounted on the carriage. The charger is utilized to charge the photosensitive member to a given polarity. The illumination unit illuminates an original which is fixedly placed on an original receptacle. The optical system projects an image of the original illuminated onto the photosensitive member. The high tension generator supplies a current to the charger and the illumination unit. During a movement of the carriage in the forward direction, the charger charges the photosensitive member to a given polarity, on which the image of the original illuminated is projected by the optical system, thus forming an electrostatic latent image on the photosensitive member. The latent image is converted into a visual image as the photosensitive member passes through a developing unit during its angular movement. The visual image is transferred onto a transfer sheet which is brought into contact with the photosensitive member. After the transfer step, the surface of the photosensitive member is cleaned.

REFERENCES:
patent: 3578970 (1971-05-01), Michaud et al.
patent: 3609354 (1971-09-01), Herman
patent: 3792924 (1974-02-01), Matsuda et al.
patent: 4050802 (1977-09-01), Tanaka et al.
patent: 4062631 (1977-12-01), Ichikana et al.
patent: 4129376 (1978-12-01), Yotsukura
patent: 4170175 (1979-10-01), Conlon Jr.
patent: 4178092 (1979-12-01), Yamamoto et al.
patent: 4206994 (1980-06-01), Silverberg et al.

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