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SICPA OVI

Optically variable ink technology commercialised by SICPA Security Inks and Coatings SA, Lausanne. Each flake is a vacuum-deposited Al / dielectric (MgF2 or SiO2) / Al sandwich whose dielectric layer thickness determines the base colour and shift colour.

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Related terms

BOPP (biaxially oriented polypropylene)Europol PEX (Project Ester)FICN (Fake Indian Currency Notes)Fluorescent security inkGoniospectrophotometryIntaglio printingOptically variable ink (OVI)Security threadUSSS Counterfeit Division

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