Image shifting by control patch

U.S. Patent Number: 5300983

Abstract: Method and apparatus for control of cross-track registration of a web member in an image forming apparatus, such as a photocopier or printer. A control patch is laid down on the web member and toned. After toning, the amount of toner for a particular section of the control patch is sensed and compared with known amounts of toner to determine the cross-track position of the web. Once the cross-track position is determined, a printhead is programmed to alter the web lay-down location, of an image to be reproduced, to adjust for the actual cross-track location of the web.

Inventors: Paxon; James F. (Rochester, NY)

Assignee: Eastman Kodak Company (Rochester, NY)

Application Number: 07/956,210

Issued: 1994-04-05

Expired: 2006-04-05

Classes: 347/112 ; 250/491.1; 250/548; 250/549

Field of search: 355/203,204,208,212,213,327,326 250/548,559,491.1

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