Xerox Corporation

Robert C Speiser

Paul F Jacobs

William D Fender

Thomas L Thourson

Hans P Ceelen

Gerhard K Kramer

An electrophotographic imaging member comprising providing a conductive substrate, an alloy layer comprising selenium doped with arsenic having a thickness of between about 100 micrometers and about 400 micrometers, the alloy layer comprising between about 0.3 percent and about 2 percent by weight arsenic at the surface of the alloy layer facing away from the conductive substrate and comprising crystalline selenium having a thickness of from about 0.01 micrometer to about 1 micrometer contiguous to the conductive substrate, and a thin protective overcoating layer on the alloy layer, the overcoating layer having a thickness between about 0.05 micrometer and about 0.3 micrometer and comprising from about 0.5 percent to about 3 percent by weight nigrosine. This photoreceptor is prepared by providing a conductive substrate, cleaning the substrate, heating an alloy comprising selenium and from about 0.05 percent to about 2 percent by weight arsenic until from about 2 percent to about 90 percent by weight of the selenium in the alloy is crystallized, vacuum depositing the alloy on the substrate to form a vitreous photoconductive insulating layer having a thickness of between about 100 micrometers and about 400 micrometers containing between about 0.3 percent and about 2 percent by weight arsenic at the surface of the photoconductive insulating layer facing away from the conductive substrate, applying thin protective overcoating layer on the photoconductive insulating layer, the overcoating layer having a thickness between about 0.05 micrometer and about 0.3 micrometer and comprising from about 0.5 percent to about 3 percent by weight nigrosine, and heating the photoconductive insulating layer until only the selenium in the layer adjacent the substrate crystallizes to form a continuous substantially uniform crystalline layer having a thickness up to about one micrometer.

Selenium alloy imaging member

A single wire microelectrometer imaging system is disclosed wherein a latent electrostatic image charge pattern is produced, then measured from point to point across the charged image surface and then transmitted for processing if desired. It is found that this system provides multiple image information from a single exposure which is especially significant in xeroradiographic medical diagnostic imaging processes. Thus instead of developing a latent electrostatic image which is produced the charge is captured and transmitted, to be stored or further processed if desired. The captured image may be shown in either hard copy form or on a video screen as desired.

Growing community of inventors

Altadena, CA, United States of America

Robert C Speiser