Apparatus and a method for reading light-dark or color-contrast

Details Apparatus and a method for reading light-dark or color-contrast Apparatus and a method for reading light-dark or color-contrast

1974-10-03

1976-07-20

Cook, Daryl W.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

250555, G06K 710, G08C 906

Patent

active

039708250

ABSTRACT:
Apparatus and method for reading light-dark or color-contrast codes on articles which are displaced over a light-transmitting region of a support of the kind wherein a scanning light beam is directed onto the articles and scattered light reflected from the articles and codes is supplied to a photoelectric transducer the output signal from which is supplied to electronic evaluating means, wherein the scanning light beam is directed upwardly through the light-transmitting region of the support and is displaced along two imaginary straight lines located in the light-transmitting region of the support, said lines, which preferably intersect, extending obliquely to the direction of displacement of the articles and substantially at right angles to one another.

REFERENCES:
patent: 3728677 (1973-04-01), Munson
patent: 3812374 (1974-05-01), Tuhro
patent: 3818444 (1974-06-18), Connell

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