Apparatus for ascertaining selected characteristics of sheets
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United States of America Patent
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-
Apr 29, 1997
Grant Date -
N/A
app pub date -
Mar 12, 1996
filing date -
Mar 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for ascertaining the width, the length, the coarseness of cut edges and/or other selected characteristics of sheets of paper or the like has a sheet testing unit employing one or more cameras for the monitoring of a sheet which is maintained in a predetermined position at a predetermined location, a feeding unit which supplies sheets to be tested from a source of sheets to the predetermined location, and an evacuating unit which withdraws freshly tested sheets from the predetermined location. Signals denoting the results of tests can be used to regulate the operation of the machine or production line which makes and/or processes the sheets, and the evacuated satisfactory tested sheets can be returned into such machine or production line.
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