Information carrier medium and reader for reading the...

G - Physics – 06 – K

Patent

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G06K 19/06 (2006.01) G06K 7/12 (2006.01)

Patent

CA 2362602

An information carrier medium includes at least first and second sheet members (12, 14) each having first and second surfaces opposite to each other and laminated together with the first surface of the first sheet member bonded to the first surface of the second sheet member. A security indicium (14; 71) is formed on at least one of the first surfaces of the respective first and second sheet members (12, 14). The security indicium is made of at least one inking material of a kind capable of responding to a coherent light when irradiated thereby. An electro-optical reader for reading the security indicium (14; 71) is also disclosed.

L'invention concerne un support d'information comprenant au moins une première et une seconde feuilles (12, 14) ayant chacune une première et une seconde surfaces mutuellement opposées et stratifiées avec la première surface de la première feuille liée à la première surface de la seconde feuille. Un timbre de sécurité (14; 71) est formé sur au moins l'une des premières surfaces, respectivement, des premières et secondes feuilles (12, 14). Un timbre de sécurité est au moins en une matière d'encrage d'un type capable de répondre à une lumière cohérente lors d'une irradiation par celle-ci. L'invention concerne également un lecteur électro-optique pour la lecture du timbre de sécurité (14; 71)

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