Improvements in or relating to high value documents

Details Improvements in or relating to high value documents Improvements in or relating to high value documents

B - Operations, Transporting

42

D

B42D 15/00 (2006.01) B41M 3/14 (2006.01) B42D 15/10 (2006.01) G03G 21/04 (2006.01) G07D 7/00 (2006.01) G07D 7/12 (2006.01)

Patent

CA 2140880

The present invention relates to means of identification or a document of value comprising a paper or polymer region, in particular, bank notes, passports, identification cards or any other document of sufficient value to make it liable to be copied or counterfeited, wherein a liquid crystal material has been applied to the region to produce optical effects which differ when viewed in transmitted and reflected light. The invention also relates to a method of producing such means of identification or a document of value and a method of verifying the authenticity of an identification means or a document of value.

La présente invention a trait à un procédé d'identification ou à un document de valeur présentant une zone constituée de papier ou d'un polymère, par exemple des billets de banque, des passeports, des cartes d'identité ou tout autre document dont la valeur le rend susceptible de copie ou de contrefaçon; ce procédé d'identification consiste à appliquer des cristaux liquides sur la zone en question pour produire des effets optiques différents selon que le document est vu à la lumière transmise ou à la lumière reflétée. L'invention a également trait à une méthode de fabrication de ce moyen d'identification ou de ces documents de valeur et à une méthode de vérification de l'authenticité dudit moyen d'identification et du document de valeur.

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