B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
B42D 15/00 (2006.01)
Patent
CA 2599427
The invention relates to a security element (1), comprising a first luminescent substance, for a security document (5), the latter (5) comprising a base body (51) consisting of a base material. The aim of the invention is to increase the protection against forgery. To achieve this: the security element is provided with a second luminescent substance; energy is transmitted between the first luminescent substance and the second luminescent substance, whereby the frequency range of the excitation of one of the luminescent substances corresponds to the emission frequency range of the other luminescent substance; and the first luminescent substance is thermally unstable at the ignition temperature of the base material and/or at a temperature of 185 ~C.
L'invention concerne un élément de sécurité (1) pour un document de sécurité (5) qui comprend un corps de base (51) constitué d'un matériau de base, l'élément de sécurité comprenant une première substance luminescente. L'objectif de l'invention est d'accroître la protection contre les falsifications. A cet effet, l'élément de sécurité présente une deuxième substance luminescente, un transfert d'énergie étant prévu entre la première substance luminescente et la deuxième substance luminescente. La gamme de fréquences d'excitation d'une des substances luminescentes correspond à la gamme de fréquences d'émission de l'autre substance luminescente. La première substance luminescente est thermiquement instable à la température d'inflammation du matériau de base et/ou à une température de 185 °C.
Deinhammer Harald
Emerich Markus
Marks & Clerk
Oesterreichische Banknoten-Und Sicherheitsdruck Gmbh
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