Method of generating a laser marking in a security document...

Details Method of generating a laser marking in a security document... Method of generating a laser marking in a security document...

B - Operations, Transporting

42

D

B42D 15/10 (2006.01)

Patent

CA 2657796

The invention relates to a method of generating a laser mark (4) in a security document by means of at least one laser beam, the security document having at least one laser-markable layer and also at least one reflecting layer which overlaps at least partly with the at least one laser-markable layer and has opaque regions. The at least one reflecting layer has at least one transparent region (3a) and in visual terms at least is not substantially altered by the laser treatment of the laser-markable layer.

L'invention concerne un procédé de production d'un marquage laser dans un document de sécurité au moyen d'au moins un rayon laser. Le document de sécurité comporte au moins une couche pouvant être marquée au laser ainsi qu'au moins une couche réfléchissante superposée au moins partiellement avec la ou les couches pouvant être marquées au laser et comportant des zones opaques. La ou les couches réfléchissantes comportent au moins une zone transparente et ne sont pas sensiblement modifiées au moins visuellement par le traitement au laser de la couche pouvant être marquée au laser.

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