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APPLICATION OF FLOATING BIAS DEVELOPMENT TO COUNTERACT RADIANT FUSER INTERACTIONS WITH SELENIUM TELLURIUM PHOTORECEPTORS

IP.com Disclosure Number: IPCOM000025692D
Original Publication Date: 1987-Apr-30
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal

Abstract

Seleniumrtellurium photoreceptors have been shown to provide greatly improved blue copyability and suppress goldenrod background effects over selenium photoreceptors. However, for some systems, the increased spectral response of the selenium-tellurium photoreceptors gives rise to interactions with incident light emitted from machines utilizing radiant fusers. For example, one xerographic design employing a radiant fuser with a tungsten quartz lamp requires fuser warm-up times of several minutes. The tungsten quartz lamp is illuminated for several minutes and exposes a segment of the photoreceptor located in the toner image transfer station. Interaction of this exposure with a selenium-tellurium photoreceptor causes enhanced charge trapping in the exposed areas which in turn cause correspondingly high background on copies. Similarly, long copy runs can lead to an overall increase in background voltage. The situation is aggravated in some devices by the close proximity of the fuser to the photoreceptor. One solution has been to place an optical filter over the fuser lamp but this involves substantial cost and, to a slight extent, adversely affects fusing. Thus, where photoreceptor voltage variations occur due to the presence of incident light from a radiant