Method and apparatus for optical alignment of a measuring head in an X-Y plane
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United States of America Patent
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Feb 3, 1998
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app pub date -
Mar 25, 1996
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Mar 25, 1996
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Abstract
A two-dimensional position detector, in combination with dynamic z and/or flutter sensors, provides dynamic misalignment detection and correction of a measuring head, thereby allowing accurate determinations to be made of properties of a sheet material, such as basis weight.
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