Device for detecting defects in single faced corrugated fiberboa

Details Device for detecting defects in single faced corrugated fiberboa Device for detecting defects in single faced corrugated fiberboa

1987-05-28

1988-04-12

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358101, H04N 718

Patent

active

047378468

ABSTRACT:
A device for detecting any defects in single faced corrugated fiberboard while it is running. A light is irradiated to the corrugated surface of the fiberboard and the striped image is scanned by an image pick-up unit and the picture signal is converted to binary-coded signal to discriminate the number of stripes or corrugations. The number is counted by a counter and compared with a normal number by a microcoputer. If there is too large a difference between them, the scanned part is judged as defective. This device can detect any defects in a running web at a sufficiently high speed to follow the line speed of a corrugating machine.

REFERENCES:
patent: 3419677 (1968-12-01), Fiori
patent: 4292672 (1981-09-01), Southgate
patent: 4385700 (1983-05-01), Hodges
patent: 4460921 (1984-07-01), Henry

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