A POWDER TREATMENT PROCESS TO CONTROL ALLOY FRACTIONATION
Original Publication Date: 1992-Dec-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Disclosed are processes for treating selenium alloys which: control the relative quantity of tellurium and/or arsenic formed in the top surface layer of vacuum deposited selenium alloys containing tellurium and/or arsenic; reduce the tellurium and/or arsenic distribution variation through the thickness of a photoconductive layer of an alloy of selenium with tellurium and/or arsenic; limit the loss of selenium rich species early in the evaporation process; control the sensitivity of photoreceptors to light within narrower limits; produce evaporated films of selenium and its alloys with arsenic and/or tellurium which have superior photoconductive properties; control the electrical cycling characteristics within narrower limits; control the mechanical wear characteristics of the photoreceptor surface within narrower limits; produce photoconducting devices which provide improved image quality when used in electrophotographic applications; and provide improved processes for preparing photoreceptors comprising selenium alloys containing additives such as tellurium and/or arsenic.