Authenticity verification methods, products and apparatuses

G - Physics – 06 – K

Patent

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G06K 1/12 (2006.01) G07D 7/12 (2006.01)

Patent

CA 2576942

A method and apparatus for determining a class signature from an article made of paper or cardboard in order to identify a generic type of class to which the article belongs. An optical beam illuminates the article and a detector arrangement collects data points from light scattered from many different parts of the article as the article is scanned by the beam. The class signature derives from intrinsic properties imparted to the paper/cardboard during manufacture by, it is believed, the screen used during dewatering of paper pulp. Detection of the class signature allows the manufacturer or the particular paper making machine that made the paper to be identified.

Procédé et instruments d~authentification de la signature d~un article de papier ou de carton dans le but d~identifier un type générique de classe à laquelle l~article appartient. Un rayon optique éclaire l~article et un dispositif de détection collecte des données à partir d~une lumière diffusée sur l~ensemble de l~article lorsque l~article est balayé par le faisceau. La signature dérive de propriétés intrinsèques transmises au papier/carton pendant la fabrication, par l~écran utilisé pendant l~épaississement de la pâte à papier. La détection de la signature de classe permet d~identifier le fabricant ou la machine qui a fabriqué le papier.

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