Charging apparatus

Details Charging apparatus Charging apparatus

1983-12-01

1985-10-15

Grimley, A. T.

Photocopying

Including fiber optics

355 3CH, 430 31, 430902, 361225, G03G 1500

Patent

active

045470600

ABSTRACT:
Apparatus for forming images on a charge-retentive surface including uncharged toner particles which are applied to electrostatic latent images formed on the surface. The latent image is formed on the charge-retentive surface by exposing a charged surface to a light pattern of an image to be reproduced. Prior to image exposure, the charge pattern comprises a periodic line screen pattern which is formed by means of a conductive charging brush having a suitable bias voltage applied thereto at a frequency suitable for forming the line screen pattern. By using such an arrangement charging and screening of the charge-retentive surface occur simultaneously.

REFERENCES:
patent: 2777418 (1957-01-01), Gundlach
patent: 3084043 (1963-04-01), Gundlach
patent: 4124287 (1978-11-01), Bean et al.
patent: 4265990 (1981-05-01), Stolka et al.
patent: 4336565 (1982-06-01), Murray et al.
patent: 4371252 (1983-02-01), Uchida et al.
patent: 4385823 (1983-05-01), Kasper et al.

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