O.V.M Fiduciary Inks are high security features available in several color shifts. They open the door to new design possibilities. These pigment-free inks have an exceptional durability compared to inks commonly used on ID documents and banknotes.

C.S.T introduces O.V.M™ "Optical Variable Material" technology which secures the polycarbonate material, thus securing the core of the raw material. This technology is different from conventional solutions such as pigments and taggants. It allows the creation of the first Fiduciary Polycarbonate, exclusively dedicated to ID documents.

OVM technologies cooperate to form a new family of Optically Variable Devices •Engraved laminate Plate and OVM together offer unprecedented possibilities 36

Applied in transparent polycarbonate films used for the implementation of clear windows in ID documents, the OVM Optical Variable Material® technology enables the development of an innovative and intuitive security feature. It creates brand new visual effects which are observable in level 1, 2 and 3 security. The transparent area of the ID ...

光学渐变磁性油墨是瑞士SICPA（锡克拜）公司 SPARK® 技术的核心，简称OVMI油墨，它与OVI 油墨字面上区别仅仅差一个 “M” 即 Magnetic 磁性，可实际变色效果差之甚远。 现简要地从以下几个方面来阐述： SPARK是便于识别的公众防伪技术，因此被广泛地应用到许多国家的纸币上。 当视角发生改变时，区域内图像的明暗将发生位移，并同时发生流动的效果，期间颜色也逐步发生改变。 它所体现的独特的、动感的. 效果如图1中所示。 在谈到变色原理之前，我先要介绍一下 …

OVMI – Optically Variable Magnetic Ink. A multi-level (visual and machine readable) security feature. The visual effects are based on the magnetic properties of an optically variable magnetic ink. The ink contains a special magnetic pigment located with …

OVI® is a sophisticated technology with an unparalleled optical yield. It gives a public feature an intense colour and a striking colour-shift that enables instant authentication by the naked eye.

Discover O.V.M Optical Variable Material technology unique concepts: intuitive and robust level 1 security features linking chemistry and optics. Additionaly, C.S.T. designs innovative processes for revealing traces and clues that enable criminals to be identified.

2021年4月11日 · 光變油墨OVI (Optical Variable Ink)可以在不同角度看到不同的油墨顏色，由於油墨配方複雜多變，同為變色油墨，各間廠商的配方顯現效果不盡相同，因而有獨一性，像是鈔票使用的光變油墨就會受政府單位管控原料，其他印刷廠極難調製出一模一樣的顏色變化。 光變油墨OVI在使用端有很容易辨識真偽的優勢，無需特殊判讀工具，只要轉動觀看角度，觀察油墨是否有正確變色即可確認真偽。 比較高端的防偽，還會設計防偽底紋或團花，以光變油墨OVI印刷防 …

2018年4月23日 · Optical Variable Ink (OVI) can be seen at different angles for different ink colors. The Optical Variable Inks have their unique features due to the complexity and variability among different manufacturers’ formulas.