Method for measuring and controlling fiber variations in paper s

Details Method for measuring and controlling fiber variations in paper s Method for measuring and controlling fiber variations in paper s

1993-03-02

1995-02-28

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Regulatory

162198, 162259, 162263, 364471, 382 52, G01N 2189, D21F 706

Patent

active

053933788

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.

REFERENCES:
patent: 3962719 (1975-12-01), Spitz
patent: 4205341 (1980-05-01), Mitsuya et al.
patent: 4500968 (1985-02-01), Bialkowski
patent: 4578713 (1986-03-01), Tsao et al.
patent: 4831658 (1989-05-01), Umeda et al.
patent: 5011573 (1991-04-01), Niemi

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