Photoelectric bar code scanning

Details Photoelectric bar code scanning Photoelectric bar code scanning

G - Physics

06

K

352/53.74

G06K 7/14 (2006.01) B41F 33/00 (2006.01) G06K 7/016 (2006.01) G06K 19/06 (2006.01)

Patent

CA 1235813

ABSTRACT OF THE DISCLOSURE The invention relates to a method and an arrangement for the detection, by photoelectric means, of markings on a printed, decorated material web, the markings consisting of two groups of stroke markings, the markings of one group being arranged to be sensed by a first photocell element, which is adapted so that, on sensing, it cuts in a second photocell ele- ment, with the help of which the stroke markings of the second group are sensed and fed into a memory unit for continuous com- parison with a value permanently stored in the memory unit. On completion of the pulses fed and the pulses stored in the memory unit, a control signal is released to perform operations on or with the web.

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