| 摘要 |
FIELD: multi-layered images. ^ SUBSTANCE: layered structure has layer sensitive to laser radiation, which is altered by laser effect and forms at least one portion of multi-layered image on part from part of image induced by laser and background layer and/or foreground layer. Part of image induced by laser is positioned so, that it at least partially overlaps with background layer and is at least partially overlapped by foreground layer. Material, sensitive to laser radiation, is made as mixture of various components sensitive to laser radiation, while the mixture is composed of two, preferably three different dying components, preferably components of pigments and/or color-forming dyes. Each one of these two or three components can be whitened by means of laser under appropriate certain conditions of laser radiation. ^ EFFECT: high degree of protection from forgery. ^ 25 cl, 84 dwg |
