Method and apparatus for controlling the position of a transported web
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United States of America Patent
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-
Sep 8, 1987
Issued Date -
N/A
app pub date -
Apr 16, 1986
filing date -
Aug 31, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for controlling the position of a web containing location identifying information thereon. In particular, a means for measuring displacement of the web independent of the location information is employed to measure the displacement of the web in a cyclic manner such that the measuring cycle is in the expected displacement intervals between identifying information. A difference between a desired position of the web determined by an operator controlled reference displacement position of the web is determined, and used for controlling the position of the web to the desired position.
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