Security element having a laser marking

Details Security element having a laser marking Security element having a laser marking

B - Operations, Transporting

42

D

B42D 15/10 (2006.01)

Patent

CA 2650882

The invention relates to a security element (12) for security papers, value documents, and similar. Said security element (12) comprises a laser-markable transparent or translucent marking layer (14) into which visually recognizable marks (16) are introduced in the form of patterns, letters, numbers, or images under the effect of laser radiation. According to the invention, each mark (16) encompasses one lamellar structure (18) that is composed of a plurality of essentially parallel lamellae (14) which extend into the depth of the marking layer (14) and are characterized by the parameters color, width, height, lateral orientation, angle of inclination, and distance.

L'invention concerne un élément de sécurité (12) utilisé pour des papiers de sécurité, des documents de valeurs, et analogues. Ledit élément de sécurité (12) comprend une couche de marquage (14) transparente ou translucide pouvant être marquée au laser, dans laquelle des marques (16) reconnaissables visuellement peuvent être introduites sous forme de motifs, de lettres, de nombres ou d'images, sous l'effet d'un rayon laser. Selon l'invention, chaque marque (16) comprend une structure (18) lamellaire, composée d'une pluralité de lamelles (20) sensiblement parallèles, qui s'étendent dans la profondeur de la couche de marquage (14) et qui sont caractérisées par des paramètres de couleur, de largeur, de hauteur, d'orientation latérale, d'angle d'inclinaison et de distance.

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