Security device and its production method

Details Security device and its production method Security device and its production method

B - Operations, Transporting

41

M

B41M 3/14 (2006.01)

Patent

CA 2507900

A security device comprises two or more regions (1, 2). Each region (1, 2) contains a material or combination of materials wherein the two or more regions exhibit substantially the same visible appearance under first viewing conditions and different visible appearances under second viewing conditions, the second viewing conditions. The second viewing conditions comprise a combination of a) visible light and b) substantially any UV wavelength.

L'invention concerne un dispositif de sécurité comprenant deux ou plusieurs zones (1, 2). Chaque zone (1, 2) contient un matériau ou une combinaison de matériaux, lesdites zones présentant sensiblement la même apparence visible dans des premières conditions de visualisation et différentes apparences visibles dans des secondes conditions de visualisation. Les secondes conditions de visualisation combinent a) une lumière visible et b) sensiblement n'importe quelle longueur d'onde UV.

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