FIELD: protective element, and also valuable document provided with protective element, and transferable material for applying protective element onto the valuable document.
SUBSTANCE: forgery-protected document, a security, such as a banknote, or semi-manufactured article for manufacturing such a forgery-protected document, has a base with first and second surfaces positioned one in front of the other and is provided with protective element, which is connected to the base in such a way, that it is seen at least on the side of one of two base surfaces. Protective element has color multi-vibrator effect creating multilayer interference element and layer with diffraction structures, which at least partially overlaps with interference element. Protective element is half-transparent, interference element has recesses at least in one layer, and diffraction structures are directly adjacent to interference element.
EFFECT: increased degree of forgery protection for securities.
3 cl, 8 dwg, 2 ex
