G - Physics – 07 – D
Patent
G - Physics
07
D
G07D 7/12 (2006.01) B24D 15/10 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) G07F 7/08 (2006.01)
Patent
CA 2460082
A method for customising security documents, particularly banknote, checks and documents representing a value in general. The method is suitable to prevent their forgery and alteration and comprises the steps that consist in superimposing at least two materials (10, 20) having different resistances to laser and being arranged adjacent to each other onto a substrate (30) having a higher resistance to laser than each of the superimposed materials (10, 20) and treating said superimposed materials (10, 20) with a laser beam which is guided along a preset path in order to modify by sublimation a part of each superimposed material (10, 20) by subjecting it to said laser beam without substantially burning or sublimating said substrate (30).
La présente invention concerne un procédé permettant de personnaliser des documents de sécurité, en particulier un billet de banque, des chèques et des documents représentant d'une manière générale une valeur. Ce procédé convient pour empêcher la production de faux et la modification de ces documents. Il consiste à superposer au moins deux matériaux (10, 209) présentant des résistances différentes au laser et agencés de manière réciproquement contiguë sur un substrat (30) possédant une résistance au laser supérieure à celle de chacun des matériaux superposés (10, 20), et à traiter ces matériaux superposés (10, 20) avec un faisceau laser guidé sur un trajet préfixé de façon à modifier par sublimation une partie de chaque matériau superposé (10, 20) par la soumission de ces derniers au faisceau laser sans brûler ou sublimer sensiblement le substrat (30).
Fabriano Securities S.r.l.
Mantegazza Antonio Arti Grafiche S.r.l.
Sim & Mcburney
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