Web element concentration detection system

Details Web element concentration detection system Web element concentration detection system

1980-01-15

1981-07-07

Corbin, John R.

Optics: measuring and testing

By monitoring of webs or thread

For flaws or imperfections

250559, 250571, G01N 2186

Patent

active

042771781

ABSTRACT:
A flying spot scanner is utilized to scan a beam of laser radiation along a fixed spacial path on a moving web material. An optical detector assembly is positioned to receive radiation reflected from individual elements of the web to produce an electrical signal which is processed to determine and monitor the number of the individual web elements per unit length.

REFERENCES:
patent: 3074631 (1963-01-01), Buysch
patent: 3305687 (1967-02-01), Vinzelberg et al.
patent: 3612702 (1971-10-01), Troll
patent: 3800160 (1974-03-01), Ishizawa
patent: 3972624 (1976-08-01), Klein et al.

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