Security document with ultraviolet authentication security...

B - Operations – Transporting – 42 – D

Patent

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Details

B42D 15/10 (2006.01) B41M 3/14 (2006.01)

Patent

CA 2538628

The invention relates to the field of printed security documents and, more particularly, to security documents and methods of making security documents bearing enhanced security features. The security documents may include identification documents or any other known documents of value. The security document includes a transparent window area with an ultraviolet blocking agent incorporated therein. Invisible ultraviolet fluorescent ink patterns are printed on respective opposite sides of the ultraviolet blocking agent within the region of the transparent window area. When either the face side or back side of the security document is illuminated with ultraviolet light, only the pattern printed proximate that side within the area of the transparent window becomes visible. When both face and back sides are simultaneously illuminated with ultraviolet light, the patterns printed on both sides of the ultraviolet blocking agent within the area of the transparent window become visible at the same time.

L'invention porte sur le domaine des documents de sécurité imprimés et, en particulier aux documents de sécurité et aux méthodes de fabrication de documents de sécurité portant des caractéristiques améliorées de sécurité. Les documents de sécurité peuvent inclure des documents d'identification ou d'autres documents de valeur connus. Les documents de sécurité comprennent une fenêtre transparente avec un agent filtrant les radiations ultraviolettes intégré. Des motifs à l'encre invisible fluorescente ultraviolette sont imprimés sur des côtés opposés respectifs de l'agent filtrant les radiations ultraviolettes dans la région de la fenêtre transparente. Si un des côtés du devant ou de l'arrière du document de sécurité est illuminé avec une lumière ultraviolette, seul le motif imprimé près de ce côté dans la fenêtre transparente devient visible. Si les deux côtés de devant et d'arrière sont simultanément illuminés avec une lumière ultraviolette, les motifs imprimés sur les deux côtés de l'agent filtrant les radiations ultraviolettes dans la fenêtre transparente deviennent visibles au même moment.

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