Web/ribbon path verifier for detecting and identifying errors in a web/ribbon path
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United States of America Patent
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-
Jul 14, 1998
Grant Date -
N/A
app pub date -
Nov 20, 1996
filing date -
Nov 20, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotational detector is attached to each of the rolls that might be passed over or under as part of a paper web/path. Each of the rotational detectors emits an output signal which indicates whether the roll it is attached to is moving and, if it is moving, the direction it is moving. A comparator compares the output from each of the rotational detectors to path requirement data for the path that the pressman intended to web. The comparator determines whether any mistakes have occurred and if an error has occurred the roll on which the mistake has occurred. The comparator then determines whether any of the mistakes which might have occurred are catastrophic, requiring rewebbing. If there are no catastrophic errors, a controller adjusts the register for any deviations from the intended path that might have occurred during webbing.
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