Printing – Processes – With heating or cooling
Reexamination Certificate
2006-09-05
2006-09-05
Hirshfeld, Andrew H. (Department: 2854)
Printing
Processes
With heating or cooling
C101S484000
Reexamination Certificate
active
07100510
ABSTRACT:
A method for registering patterns on a web to provide independent scale control in both the lateral and longitudinal directions is provided. The method includes routing the web over a first roller; routing the web over a second roller and stabilizing the web; applying a pattern to the web using process hardware; measuring registration of the pattern and providing an error signal; controlling lateral position error using the error signal; controlling longitudinal position error using the error signal; controlling lateral scale error using the error signal; and controlling longitudinal scale error using the error signal. The method provides independent scale control in both the lateral and longitudinal directions. Independent scale control avoids non-linear distortions otherwise imposed by attempting to accomplish both corrections by stretching the web in both directions.
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Brost Randolph C.
Walton Robert L.
Hamdan Wasseem H.
Hirshfeld Andrew H.
Leipold Paul A.
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