Security device

Details Security device Security device

B - Operations, Transporting

44

F

B44F 1/12 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2258251

A security device comprises a substrate (1) having a viewing region (3) which is provided on one side with first indicia (7) and on the other side with second indicia (9) overlying the first indicia. The substrate carries an obscuring material (10) aligned with the second indicia (9) so as to prevent at least the second indicia from being viewed from the one side of the substrate under reflected radiation. The substrate is sufficiently transparent while the obscuring material permits the passage of sufficient transmitted radiation to allow the second indicia (9) to be viewed from the one side of the substrate under transmission conditions.

Dispositif de sécurité composé d'un substrat (1) possédant une zone de visualisation (3) pourvue sur un côté d'un premier indice (7) et sur l'autre côté, d'un deuxième indice (9) recouvrant le premier indice. Ce substrat porte un matériau obscurcissant (10) aligné sur le deuxième indice (9), de façon à empêcher de voir au moins le deuxième indice depuis l'un des côtés du substrat sous un rayonnement réfléchi. Ce substrat est suffisamment transparent, tandis que le matériau obscurcissant permet le passage d'une émission de rayonnement suffisante pour voir le deuxième indice (9) depuis l'un des côtés du substrat dans des conditions d'émission.

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