Banknote with optically variable security elements - are transformed and pressed onto smooth surface to form hologram or relief pattern

摘要

Banknotes are produced with two sections of optically variable elements (5,6) that provide protection against forgery. The elements can be produced as holograms, relief patterns, interference patterns or similar effects. The banknote surface may be locally rolled (15) to form a smooth indent to receive the element which can be impressed into an adhesive layer (10). This can then be covered by a protective lacquer (11). The preparation of the surface is carried out by passing the continuous banknote material through rollers, with the element supplied in a transfer operation. -