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Photoconductor Belt Timing Correction Method

IP.com Disclosure Number: IPCOM000065418D
Original Publication Date: 1985-Dec-01
Included in the Prior Art Database: 2005-Feb-19

Publishing Venue

IBM

Related People

Authors:
Hansen, NH Skibbe, ME [+details]

Abstract

In an electrophotographic printer a single mark on the photoconductor belt is sensed and used to synchronize the timing of the printer operations. A single belt mark rather than a mark each panel is used because of problems associated with manufacturing and maintaining positional tolerance between multiple marks on a flexible belt. Belt length variations can create timing problems whenever a belt synch pulse occurs between critically timed events, such as printing an image and gating the paper. This article presents a method of correcting for belt length variation so that print registration accuracy is maintained. A mark on the photoconductor belt on the printer is sensed and used to synchronize the timing of the printer operations. The signal generated by the belt mark is called belt synch.