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PROGRESSIVE ONSET OF FUSER LAMP

IP.com Disclosure Number: IPCOM000026533D
Original Publication Date: 1992-Aug-31
Included in the Prior Art Database: 2004-Apr-06

Publishing Venue

Xerox Disclosure Journal

Abstract

The present invention is directed at a means for delivering power to the fuser lamp of an electrophotograpic printing system, so as to reduce the maximum current drawn by the fuser lamp when it is started from a cold condition. The improvement is accomplished by gradually increasing the input power supplied to the fuser lamp, In one embodiment, for example the Xerox 50283: the line voltage would be full-wave rectified and controlled by a power mosfet in a manner similar to that described for an illumination lamp in the Xerox Disclosure Journal, Vol. 13, No. 4, p. 211 (July!August 1988). During each full-wave cycle of the line voltage, a fuser lamp controller would increase the output, until the desired fuser temperature is reached.