FIELD: applicable for manufacture of paper protected against simulation.
SUBSTANCE: the paper protected against simulation, having blended fibers at least of two types that differ in their luminessent properties and form a coding or coded combination. There are at least two definite separate sections, on which blended fiber of only one type are available. The coding or coded combination is formed due to a definite geometrical layout of such separate sections on the paper protected against simulation and/or due to the presence or absence of blended fibers of a definite type. According to the second modification, similar blended fibers are present on both separate sections.
EFFECT: enhanced reliability of readout and identification at automatic control.
14 cl, 6 dwg
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|---|---|---|---|
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|
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