Apparatus for controlling the degree of paper fiber variation

Details Apparatus for controlling the degree of paper fiber variation Apparatus for controlling the degree of paper fiber variation

1994-12-13

1997-04-22

Alvo, Steven

Paper making and fiber liberation

Apparatus

Automatic control

162253, 162259, 162262, 162263, 348 88, 356430, D21F 706, G01N 2189

Patent

active

056226020

ABSTRACT:
An apparatus for controlling the degree of fiber variations in paper sheet has a formation meter for receiving an image of transmitted light on one side of an area of paper from a light source located on the other side of the area of paper, an image processing computing element for introducing the image from said formation meter for image processing and a fuzzy control unit for calculating and outputting optimum J/W ratio, optimum foil angle, and optimum deflector pushing degree and angle on the basis of results of image processing from said image processing computing element.

REFERENCES:
patent: 4205341 (1980-05-01), Mitsua et al.
patent: 4500968 (1985-02-01), Bialkowski
patent: 4578713 (1986-03-01), Tsao et al.
patent: 4831658 (1989-05-01), Umeda et al.

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