Electrophotocopier charging and transfer roller
AssigneePitney Bowes Inc.
InventorJames E. Genthe
Life of this patent
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Abstract
A photoconductive surface, a carbon loaded, elastomeric roller having two levels of impedance under two distinct loading conditions situated adjacent the photoconductive surface, and a device for generating two different loading conditions on the roller to thereby produce the two levels of impedance, wherein when the roller is subjected to the lower level of loading the roller is operable for charging the photoconductive surface and when the roller is subjected to the higher level of loading the roller is operable for transferring a developed image from the photoconductive surface to a receiver sheet.
Claims8
In combination, a photoconductive surface, a carbon loaded, elastomeric roller having two levels of impedance under two distinct loading conditions situated adjacent said photoconductive surface, and means for generating two different loading conditions on said roller to thereby produce said two levels of impedance, wherein when said roller is subjected to the lower level of loading said roller is operable for charging said photoconductive surface and when said roller is subjected to the higher level of loading said roller is operable for transferring a developed image from said photoconductive surface to a receiver sheet.
Dependencies are inferred from the claim text.