VARIABLE SIZE INTERNAL TEST PATTERN GENERATION FOR PRINTER DIAGNOSTICS AND CUSTOMER SETUP
Original Publication Date: 1996-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Present Xerox printers produce internal diagnostic images sizes of 8.5 x 10.5 inches and 8.5 x 13.5 inches for 8.5 x 11 and 8.5 x 14 inch paper. Fuji Xerox customer requirements necessitate the ability to perform printer diagnostics on 7.17 x 10 inch paper, while some US market accounts are requesting internal patterns for 8 x 10 inch paper. The smallest image size (8.5 x 10.5 inches) generated by Xerox printing systems results in an image that is approximately 0.5 inch shorter than the 10 inch paper length. This leaves a 0.5 inch band of toner on the photoreceptor which must be removed by the cleaning assembly. Consequently, the diagnostics performed by a service representative can prematurely reduce the life of the cleaner. It proposed that the premature cleaner failure be corrected by reprogramming the internal test pattern generation firmware and application software to produce an image length that is variable depending on the size of the paper in the paper trays.