System for determining a transversal position of any defect in a

Details System for determining a transversal position of any defect in a System for determining a transversal position of any defect in a

1974-09-24

1976-05-18

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250572, 250578, 356200, G01N 2132

Patent

active

039581284

ABSTRACT:
A system for determining a transversal position of any defect in a traveling sheet material having a defect detector and at least one scanning detector, in which the transversal position of the defect in the sheet material is determined by the coincidence between a defect signal from the defect detector and an output signal from the scanning detector.

REFERENCES:
patent: 3556664 (1971-01-01), Blaisdell et al.
patent: 3825765 (1974-07-01), Schober et al.

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