FIELD: printing.
SUBSTANCE: invention relates to a security feature having a luminescent component and a component camouflaging luminescent component for valuable documents. Security feature comprises at least one luminophore consisting of a doped host lattice, and a component camouflaging luminescent component. Properties of luminescent component, its element structure of host lattice, dopants are masked by camouflaged by camouflaging component in at least two significant properties of luminescent component. X-ray diffraction patterns of luminescent component and camouflaging component are characterised by partial superposition on each other in significant peaks. Superposition of peaks is at least 20 % of height of main peak.
EFFECT: invention provides difficult or prevention of identification of luminescent component.
18 cl, 9 ex
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Authors
Dates
2017-01-20—Published
2012-12-19—Filed