The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 1993
Filed:
Aug. 31, 1992
Richard A Lux, Webster, NY (US);
Debbie S Wickham, Macedon, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An improved method and apparatus for predicting the end of life of a photoreceptor, first records sampled data, then processes the data in order to interpolate the photoreceptor's end of life. Increased prediction accuracy is realized since both global photoreceptor information concerning a population of photoreceptors as well as information directed to a specific photoreceptor operating under particular environmental conditions are taken into account. This information is used not only to predict photoreceptor end of life but to make adjustments in the printing machine to correct xerographic degradations. In one embodiment, the information is used to direct an embedded end of life predictions system for notifying service at a remote site of photoreceptor problems in the printing machine in such a manner that it is transparent to a user of the printing machine. An alternative embodiment of the invention provides real time feedback to a service requests for the condition of a photoreceptor within a printing machine.