Method and device for detecting the position of stacked material

Details Method and device for detecting the position of stacked material Method and device for detecting the position of stacked material

1999-03-23

2000-11-07

Epps, Georgia

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

25055927, G01N 2186

Patent

active

061440388

ABSTRACT:
A method for detecting the position of stacked flat material wherein at least one light beam is directed onto a side of a pile of the flat material, is reflected therefrom and is evaluated as a measure of the position, includes directing the at least one light beam not only onto the side of the flat material pile, but also onto a region above a top edge of the pile, and utilizing regions with reflection and without reflection from the pile side for determining the position of the top edge of the pile; and a device for performing the foregoing method.

REFERENCES:
patent: 3902713 (1975-09-01), Von Iumann et al.
patent: 5033731 (1991-07-01), Looney
patent: 5457312 (1995-10-01), Mansour
patent: 5847405 (1998-12-01), Acquaviva et al.

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