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Proceedings Paper

Optically Variable Inks (OVI): versatility in formulation and usage
Author(s): Pierre Degott
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Paper Abstract

Optically Variable Inks (OVI) are printing inks containing high precision, multi-layer interference filters as their constituent pigment. They display a strong and unique color change form a normal to an angled viewing position. During the last 10 years OVI has gained wide acceptance as an overt protection for numerous value documents including banknotes and ID cards. Meanwhile, continuous improvement has taken place over the last two years in a variety of areas.

Paper Details

Date Published: 7 April 2000
PDF: 5 pages
Proc. SPIE 3973, Optical Security and Counterfeit Deterrence Techniques III, (7 April 2000);
Show Author Affiliations
Pierre Degott, SICPA S.A. (Switzerland)

Published in SPIE Proceedings Vol. 3973:
Optical Security and Counterfeit Deterrence Techniques III
Rudolf L. van Renesse; Willem A. Vliegenthart, Editor(s)

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