Method for measuring and controlling fiber variations in paper sheet
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United States of America Patent
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Feb 28, 1995
Issued Date -
N/A
app pub date -
Mar 2, 1993
filing date -
May 31, 1989
priority date (Note) -
Expired
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Abstract
A formation control method and apparatus in which an image is emitted from a light source and transmitted through a predetermined area of paper an captured by a camera to be displayed as transmitted light image on a display of an image processing computing element, the transmitted light image displayed on the display being image-analyzed to obtain formation factor for quantification of the formation, J/W ratio and the like being optimized by fuzzy control using membership functions based on said formation factor so as to improve the formation.
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