Electrophotographic processes using a pre-exposure

Details Electrophotographic processes using a pre-exposure Electrophotographic processes using a pre-exposure

1977-09-20

1979-11-27

Martin, Jr., Roland E.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Electrophoretic imaging, process, composition, or product

430 94, 355 3R, G03G 1322, G03G 1304

Patent

active

041759559

ABSTRACT:
An electrophotographic process including the step of pre-exposing the surface of a photosensitive member to light at an exposure of no less than 10.sup.3 lx-sec, followed by the uniform charging of the same. The photosensitivity of this type photosensitive member in an image exposing step varies according to its prior history. This process further includes the step of exposing an image by projecting an optical image, corresponding to an original image, onto the photosensitive member thus charged for forming a clear electrostatic latent image, corresponding to the original image, on the surface of the photosensitive member.

REFERENCES:
patent: 3041167 (1962-06-01), Blakney et al.
patent: 3249430 (1966-05-01), Metcalfe et al.
patent: 3494789 (1970-02-01), Makino et al.
patent: 3533783 (1970-10-01), Robinson
patent: 3813242 (1974-05-01), Mitsusuke et al.
patent: 3837849 (1974-09-01), Ciuffini
patent: 3873310 (1975-03-01), Bean

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