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METHOD FOR DETECTING MISREGISTRATION OR SKEW

IP.com Disclosure Number: IPCOM000027743D
Original Publication Date: 1999-Apr-30
Included in the Prior Art Database: 2004-Apr-09

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a method by which paper jams occurring in the registration transport of a laser printer can be easily detected. The jams occur as often as every 200 prints and result from misregistration caused by paper dust, fusing contaminates, and toner particles accumulating on the clutch and gears of the transport housing. As shown in the accompanying figure, registration transport 10 includes the addition of an inboard sensor 12 and an outboard sensor 14 to indicate the presence of paper at the nip of the registration transport 10 and if the paper is straight. The sensors 12 and 14 along with an appropriate fault code included in the printer's machine diagnostics allow a service technician to locate, isolate, and correct a paper jam caused by misregistration.