B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
B42D 15/00 (2006.01)
Patent
CA 2511796
The invention relates to printable security paper provided with an area for recto and verso impressions which are visible in reflected light and form an image visible in transmitted light. Said paper can be used in the form of a security element against a recto/verso reproduction and is characterised in that said area is embodied in such a way that it is rastered and whose total mean opacity is lower than the opacity of the vellum part of the rest of the paper. Said rastered area consists of alternating vellum minizones having a constant thickness which is equal to the thickness of the vellum part of the rest of the paper, and of minizones with reduced opacity whose thickness is reduced with respect to the vellum minizones. A security document produced by means of said paper is also disclosed.
La présente invention concerne un papier de sécurité imprimable comportant une zone apte à recevoir des impressions recto et verso observables en lumière réfléchie et formant une image observable en lumière transmise comme élément de sécurité contre la reproduction recto/verso, caractérisé par le fait que ladite zone est une zone tramée ayant une opacité globale moyenne inférieure à l'opacité de la partie véline du reste du papier, ladite zone tramée étant composée d'alternances de minizones vélines ayant une épaisseur sensiblement constante et égale à celle de la partie véline du reste du papier et de minizones d'opacité réduite de par leur épaisseur réduite par rapport aux minizones vélines. L'invention concerne aussi le document de sécurité obtenu avec ce papier.
Mallol Stephane
Thierry Yvan
Vast Nathalie
Arjo Wiggins Security Sas
Arjowiggins Security
Robic
LandOfFree
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