Electrographic apparatus and method for using arsenic selenide a

Details Electrographic apparatus and method for using arsenic selenide a Electrographic apparatus and method for using arsenic selenide a

1976-03-08

1978-10-10

Pellinen, A. D.

Photocopying

Including fiber optics

96 1R, 355 3CH, G03G 1502

Patent

active

041193733

ABSTRACT:
An improvement to the method and apparatus of producing multiple copies of a document using a copy machine having an arsenic selenide photoconductive layer and wherein a development technique is used that is capable of providing uniformly-filled solid areas. The improvement includes the step of exposing the photoconductive layer to light energy prior to uniformly charging the photoconductor for each copy to be produced with such light energy and the light energy used for exposing the charged photoconductor to the light image of the document selected in terms of light energy and spectral distribution to establish a stablized fatigue level for the photoconductive layer thereby eliminating objectionable image density variations between successive copies made of the original.

REFERENCES:
patent: 3041167 (1962-06-01), Blakney et al.
patent: 3533783 (1970-10-01), Robinson
patent: 3615395 (1971-10-01), Yamaji et al.
patent: 3834809 (1974-09-01), Yoshizawa et al.
patent: 4035750 (1977-07-01), Staudenmayer et al.

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