| 摘要 |
<p>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). <IMAGE></p> |
