| 摘要 |
FIELD: printing arts and concerns the printed matter with an image concealed from visual observation. ^ SUBSTANCE: the printed matter has a medium with the main image applied onto it transferred by a regulated raster with a preset angle and lineature, and at least with one additional image concealed from visual observation transferred by a raster with a deformed structure with a possibility of identification of the concealed image at imposition of a reference template onto the printed product. The concealed image is made for visualization in half-tones or in a contour at imposition of a reference template representing a transparent base with a linear raster applied onto it, whose angle and lineature are identical to the preset ones. ^ EFFECT: enhanced degree of protection of the printed matter at a use of a sufficiently simple reference template. ^ 14 cl, 8 dwg |
