Method of altering the gradation in electrostatic recording of h

Details Method of altering the gradation in electrostatic recording of h Method of altering the gradation in electrostatic recording of h

1977-10-06

1979-05-08

Dixon, Harold A.

Radiant energy

Corona irradiation

Charging of moving object

H01T 1904

Patent

active

041538366

ABSTRACT:
The recording of half-tone images by electrophotographic and electrographic recording processes can easily be controlled by a method of altering the gradation in electrostatographic recording of latent charge images of half-tone originals wherein a first latent charge image produced on a primary recording material is recorded as a second latent charge image of altered gradation on a secondary recording carrier by means of a charging current which is controlled by a slotted diaphragm.

REFERENCES:
patent: 2756676 (1956-07-01), Steinhilper
patent: 2965756 (1960-12-01), Vyverberg
patent: 3084061 (1963-04-01), Hall
patent: 4060382 (1977-11-01), Vertegaal

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