Improvements in printed security features

Details Improvements in printed security features Improvements in printed security features

B - Operations, Transporting

41

M

B41M 3/14 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2738604

The invention relates to improvements in security features which comprise at least one printed image and, in particular, to such security features which provide an improvement in the resolution of printed images forming security features using inks, pigments or printing processes which do not lend themselves to the production of sharply defined or high resolution images. The security feature comprises an opague first image and a second image at least partially overlying the first image, the second image being a printed image which has a lower visual resolution than the first image. The formation of the second image is such that, when the security feature is viewed in transmitted and/or reflected light, only the shape of the first image is readily discernable.

L'invention porte sur des perfectionnements apportés à des éléments de sécurité qui renferment au moins une image imprimée et, en particulier, sur des éléments de sécurité qui fournissent une amélioration dans la résolution d'images imprimées formant des éléments de sécurité à l'aide d'encres, de pigments ou de procédés d'impression qui ne se prêtent pas eux-mêmes à la production d'images finement définies ou à haute résolution. L'élément de sécurité inclut une première image opaque et une seconde image recouvrant au moins partiellement la première image, la seconde image étant une image imprimée qui présente une résolution visuelle inférieure à celle de la première image. La formation de la seconde image est telle que, lorsque l'élément de sécurité est observé par transparence et/ou réflexion, seule la forme de la première image est aisément discernable.

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