Security element

Details Security element Security element

B - Operations, Transporting

42

D

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

Patent

CA 2735030

The invention relates to a security element comprising a transparent carrier substrate and a color-changing element made of a layer reflecting electromagnetic waves, a spacing layer, and a layer in the form of metal clusters, characterized in that the layer reflecting the electromagnetic waves is applied to the transparent carrier substrate partially as a line raster and partially as a contiguous layer made of one or more different metals.

L'invention concerne un élément de sécurité comprenant un substrat support transparent et un élément changeant de couleur comportant une couche réfléchissant les ondes électromagnétiques, une couche d'espacement et une couche formée par des groupes métalliques. L'invention est caractérisée en ce que la couche réfléchissant les ondes électromagnétiques est placée sur le substrat support transparent, au moins partiellement en tant que trame à lignes et au moins partiellement en tant que couche, recouvrant toute la surface, contenant un ou plusieurs matériaux différents.

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