Improvements in security elements

Details Improvements in security elements Improvements in security elements

D - Textiles, Paper

21

H

D21H 21/40 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2703342

The invention relates to improvements in security elements for use in or on security substrates. In particular the invention is concerned with security elements having public recognition features. The security element comprises at least one light transmitting carrier substrate, a first metal layer having substantially metal- free areas defining indicia which are visible in transmitted light, a partial first light scattering layer providing further indicia which are visible in reflected light. The first light scattering layer overlaps the metal free areas in the first metal layer.

L'invention concerne des améliorations apportées à des éléments de sécurité destinés à être utilisés dans ou sur des substrats de sécurité. L'invention concerne en particulier des éléments de sécurité présentant des caractéristiques de reconnaissance publique. Un élément de sécurité selon l'invention comprend au moins un substrat support émetteur de lumière, une première couche métallique comportant des zones sensiblement exemptes de métal définissant des marques visibles à la lumière émise et une première couche de diffusion de lumière partielle fournissant d'autres marques qui sont visibles à la lumière réfléchie. La première couche de diffusion de lumière empiète sur les zones exemptes de métal dans la première couche métallique.

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