B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
B42D 15/10 (2006.01)
Patent
CA 2380259
A security device comprises an optically variable effect generating structure (3, 4). An obscuring layer (7) is located, in use, between the optically variable effect generating structure and a substrate (8) to which the device is secured. A colour layer (6) is also included which exhibits one or more predetermined colours when viewed under certain viewing conditions from the side of the device remote from the obscuring layer. The obscuring layer (7) is substantially opaque under the said certain viewing conditions.
L'invention concerne un dispositif de sécurité qui comprend une structure (3, 4) générant un effet pouvant varier de manière optique. En service, une couche obscurcissante (7) est placée entre la structure générant l'effet pouvant varier, de manière optique, et un substrat (8) auquel le dispositif est fixé. Une couche de couleur (6) est également prévue, qui présente une ou plusieurs couleurs prédéterminées, vues selon certaines conditions depuis le côté du dispositif éloigné de la couche obscurcissante. Cette couche obscurcissante (7) est sensiblement opaque dans lesdites conditions de visualisation.
Anton Marianne Michelle
Drinkwater Kenneth John
Kay Ralph
Borden Ladner Gervais Llp
de La Rue International Limited
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