Paper basis weight detector
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United States of America Patent
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Jun 2, 1992
Grant Date -
N/A
app pub date -
Feb 25, 1991
filing date -
Feb 25, 1991
priority date (Note) -
Expired
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Abstract
Apparatus for continuously determining the basis weight of paper simultaneously at multiple points across the full width of a substrate. The apparatus includes a radioactive source which extends across one side of the web of paper. A detector array, on the opposite side of the substrate, detects the emission from the source. The array includes scintillating fibers and multi- or single-anode photomultipliers which may be connected by a scintillating or non-scintillating fiber optic elements to the photomultiplier.
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