B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
B42D 15/00 (2006.01)
Patent
CA 2579470
The invention relates to a safety element for protecting valuable objects comprising an optically-variable layer (20) producing different colour effects when viewed at different angles. According to said invention, a semi- transparent colour layer (34) is disposed in a covering area (32) over the optically variable layer (20), wherein the colour effect produced by said optically variable layer (20) when viewed under predetermined viewing conditions is adapted to the colour effect produced by the semi-transparent colour layer (34) in the covering area.
L'invention concerne un élément de sécurité destiné à protéger des objets de valeur, comprenant une couche à variation optique (20) qui produit des effets chromatiques différents en fonction de l'angle d'observation. Selon l'invention, une couche de couleur semi-transparente (34) est disposée dans une zone de recouvrement (32), au-dessus de la couche à variation optique (20). L'effet chromatique produit par la couche à variation optique (20) observée dans des conditions d'observation prédéterminées est adapté à l'effet chromatique produit par la couche de couleur semi-transparente (34) dans la zone de recouvrement (32).
Heim Manfred
Kretschmar Friedrich
Blake Cassels & Graydon Llp
Giesecke & Devrient Gmbh
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