FIELD: printing industry.
SUBSTANCE: first area is produced in varnish layer, being formed by the first relief structure. Layer of metal with permanent surface density versus plane created by axes x and y of coordinate grid is applied onto replica varnish layer in the first area of protection element and in neighboring second area of protection element. The first relief structure represents a diffraction structure with ratio of depth to width of separate structural elements more than 0.5, at the same time layer of metal is formed with a nominal thickness of t0 layer, when transparency of metal layer is increased by means of the first relief structure availability in the first area versus transparency of metal layer in the second area.
EFFECT: proposed element of protection is cheap to manufacture and has high extent of counterfeit protection.
24 cl, 27 dwg, 2 tbl
