Laser implanted security device

Details Laser implanted security device Laser implanted security device

B - Operations, Transporting

41

J

B41J 2/435 (2006.01) B41J 2/44 (2006.01) B41M 3/14 (2006.01) B41M 5/035 (2006.01) B41M 5/24 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2406178

A method for embedding a security device into a security document, the security document including a target polymer film (1), the method including laser irradiating a polymer carrier film (2) doped with dopant molecules (3) according to a predefined security pattern with an intensity sufficient to eject the dopant molecules (13) into the target polymer film (1) but below that which causes ablation of a polymer carrier film (12).

L'invention concerne un procédé d'implantation d'un dispositif de sécurité dans un document de sécurité, lequel comporte un film polymère cible (1). Le procédé consiste à irradier au laser un film support polymère (2) dopé avec des molécules dopantes (3), selon un schéma de sécurité prédéfini, en appliquant une intensité suffisante pour introduire les molécules dopantes (13) dans le film polymère cible (1), mais inférieure à celle provoquant l'ablation d'un film support polymère (12).

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