Patent ID: 9540771
Date: 2017-01-10
CPC Classifications: B41M,B42D,C09D,C09K,D21H

Claim:
1. A security feature having a luminescent component having at least one luminophore consisting of a doped host lattice, and a component camouflaging the luminescent component, wherein an identification of the luminescent component is impeded or prevented by properties of the camouflaging component and respective like-kind properties of the luminescent component being characterized by the following relations: a) the camouflaging component has a X-ray diffractogram that at least partly overlaps with, but is not identical to, the X-ray diffractogram of the luminescent component, in order to camouflage the structure of the luminescent component, b) the camouflaging component contains at least one cationic element that is also contained in a host lattice of the luminescent component, but not all cationic elements contained in this host lattice, in order to camouflage the stoichiometry of the luminescent component, c) the camouflaging component contains at least one cationic element that is not contained in a host lattice of the luminescent component, in order to camouflage the elemental constitution of this host lattice of the luminescent component, d) the camouflaging component contains at least one dopant that is not contained as a dopant in the luminescent component, in order to camouflage the dopant or dopants of the luminescent component, e) the camouflaging component contains at least one luminophore that has a lower decay time than the luminophore contained in the luminescent component, in order to camouflage the spectral properties of the luminescent component, said security feature being further wherein the properties of the camouflaging component and of the luminescent component satisfy relation a) and at least one of the relations stated in b) to e).