Photo-sensitive screen for producing electrostatic latent image

Details Photo-sensitive screen for producing electrostatic latent image Photo-sensitive screen for producing electrostatic latent image

1978-11-15

1980-08-19

Braun, Fred L.

Photocopying

Including fiber optics

430 31, 430 68, G03G 1500

Patent

active

042181240

ABSTRACT:
A photo-sensitive screen for producing an electrostatic latent image of an original to be copied is of multi-layer structure having an apertured region in which fine apertures are formed in uniform distribution and including a photo-conductive insulative layer, an electrically conductive substrate, an insulating layer and an electrically conductive layer superposed upon one another in this order, wherein a solid region having no apertures is formed outside of the apertured region for allowing an electrode to be secured thereon in electrical contact with the electrically conductive layer. The electrode serves for applying a bias voltage to the electrically conductive layer for establishing electric field of a predetermined profile between the conductive substrate and the conductive layer across the interposed insulating layer.

REFERENCES:
patent: 2791723 (1957-05-01), Nagy et al.
patent: 2982934 (1961-05-01), Browne
patent: 3005170 (1961-10-01), Starr
patent: 3713734 (1973-01-01), Crane et al.

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