FIELD: physics, guidance.
SUBSTANCE: invention concerns control devices of deed quality. The device contains the first control device intended for detection of data of the image on the upper surface of the forward leg of the sample, and the device for evaluation, intended for evaluation of sample quality on the basis of the effects of detection gained by the control device. The second control device provides possibility of detection of the rear side of the sample, and the third control device provides possibility of sample exposure to irradiation.
EFFECT: improvement of quality of printing for warranting of constant visual identity of securities.
27 cl, 6 dwg
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