PROTECTIVE MEMBER FOR CONTROLLING AUTHENTICITY OF PROTECTED PRINTING PRODUCT AND PROTECTED PRINTING PRODUCT

摘要

FIELD: protective members for visual controlling of authenticity of printing product such as security papers, banknotes, identification cards.;SUBSTANCE: protective member is formed as color layer applied to substrate and having color-free portions produced by exposing color layer to laser radiation for forming of image detected by visual control. Substrate surface is provided with relief, said image being formed on at least one side of relief after exposing to laser radiation falling at predetermined angle to relief surface. Protected printing product is equipped with protective member for visual controlling of paper authenticity.;EFFECT: increased extent of protecting printing products due to creation of protective member more complicated for counterfeit and using optical variable image.;7 cl, 5 dwg