Security element with an optically variable structure

B - Operations – Transporting – 42 – D

Patent

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Details

B42D 15/00 (2006.01) B42D 15/10 (2006.01)

Patent

CA 2642330

The invention relates to a security element with an optically variable structure having an embossed structure with linear embossed elements and a coating, the embossed structure and the coating being so disposed that at least parts of the coating are completely visible upon perpendicular viewing but concealed upon oblique viewing. Since substantially the total coating is formed from nonlinear primitives which are characterized by the parameters of outline form, size, color and orientation, and so combined with the embossed structure that different information is visible upon a change of viewing direction, the falsification security of the security element can be increased. The invention relates further to a method for producing such a security element, to a data carrier having such a security element, and to the use of such a security element or data carrier for product protection.

L'invention concerne un élément de sécurité doté d'une structure à effet optique variable qui présente une structure en relief comprenant des éléments en relief linéaires et un revêtement, cette structure en relief et ce revêtement étant disposés de sorte qu'au moins certaines parties du revêtement soient entièrement visibles lorsqu'on les observe à la verticale et cachées lorsqu'on les observe de biais. Pour accroître le caractère infalsifiable de cet élément de sécurité, sensiblement tout le revêtement est constitué d'éléments de base non linéaires caractérisés par les paramètres que sont les contours, la taille, la couleur et l'orientation, ces éléments de base étant combinés avec la structure en relief de sorte que différentes informations soient visibles en fonction du sens d'observation. L'invention concerne en outre un procédé de production d'un élément de sécurité de ce type, un support de données pourvu d'un élément de sécurité de ce type, ainsi que l'utilisation d'un élément de sécurité ou d'un support de données de ce type pour protéger des produits.

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