| 摘要 |
FIELD: physics. ^ SUBSTANCE: invention relates to a valuable document, for example a banknote, a passport or some other similar document, as well as to counterfeit protected paper and methods of marking said valuable document and counterfeit protected paper. Given document has counterfeit protected paper with a coating on at least one of its separate sections and a laser-deposited mark which passes through the boundary between the coating and the counterfeit protected paper. ^ EFFECT: high degree of protecting valuable document from counterfeiting with improved visible protective features. ^ 18 cl, 7 dwg |
