Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce multiple image on medium or plural radiant energy...
Patent
1986-08-15
1988-07-12
Welsh, J. D.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce multiple image on medium or plural radiant energy...
430902, 430494, 430 56, 430 55, 118647, 355 3BE, 355 3SH, 355 3CH, 355 8, 355 14E, G03G 1322, G03G 1526
Patent
active
047569921
ABSTRACT:
A method of producing an electrostatic charge image comprising the sequential steps of: (1) bringing an electrode into proximity with a photoreceptor, the photoreceptor having a dielectric substrate and a photoconductive film intimately bonded to the substrate, the electrode having means to enable an electric field to be applied across the photoreceptor and being adapted to be brought into proximity with the substrate of the photoreceptor along a length of the electrode and charging the photoreceptor with an electrostatic charge of one polarity and projecting an image of a photograph on the receptor, (2) charging the photoreceptor with an electrostatic charge of opposite polarity, and (3) projecting a photographic image of the subject again on the photoreceptor whereby an electrostatic charge image is formed on the photoconductor surface. The invention also resides in apparatus to carry out the method.
In another respect the invention consists, in an electrostatic image system of photoreproduction, of (1) a photoreceptor comprising a dielectric substrate and a photoconductive film intimately bonded to the substrate; and (b) field application means having (1) a dielectric layer adapted to be brought into intimate contact with the substrate of the photoreceptor along a length of the electrode and (2) means to enable an electric field to be applied across the photoreceptor and adapted to be brought into proximity with the substrate of the photoreceptor along a length of the electrode.
REFERENCES:
patent: 2955938 (1960-10-01), Steinhilper
patent: 3539225 (1970-11-01), Goffe
patent: 3549251 (1970-12-01), Olden
patent: 3598579 (1971-08-01), Robinson
patent: 3963488 (1976-06-01), Bruschenko
Patent Abstracts of Japan, vol. 4, #78, p-14, [560], Jun. 6, 1980; JP-A-5543566.
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