Image shifting by control patch

Details Image shifting by control patch Image shifting by control patch

1992-10-05

1994-04-05

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355203, 355326R, 355327, 250548, 250549, 2504911, G03G 2100

Patent

active

053009835

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.

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