Method for detecting the position of a web supply roll and for positioning the roll
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United States of America Patent
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Dec 28, 1999
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 21, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
In a method for detecting the position of a web supply roll, the actual lateral positions of the two lateral faces of the web roll are detected and are compared with reference values. The differences between the actual and the reference values are used to shift the web supply roll laterally until the actual values are the same as the reference values.
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