Optically Variable Printed Image Dynaprint®
A composite image which consists of several initial images. It is applied and visualized with the use of the lenticular technology. Depending on the angle of observation, one or the other initial image is visible. The tone, brightness and color saturation of symbols in relation to the background may change. Consists of lenticular lenses which are embossed into the polymer substrate. A number of initial images are cut into stripes and combined into one composite image which is printed under lenticular lenses. Developed by the Swiss company TRÜB AG.
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Fig. 1. Estonia. Identification card issued in 2002:
a — back side. Polymer substrate; b — the same. DYNAPRINT® security feature. View at an observation angle of 45º. Light-colored EST symbols on a dark background; c — the same. View at an angle of 135°. Blue EST symbols on a dark background
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Fig. 2. Estonia. Identification card issued in 2011:
a — front side. Polymer substrate; b — the same. DYNAPRINT® security feature. View at an observation angle of 45°. Image of a bird in the foreground; c — the same. Depending on the angle of observation, one or the other initial image is visible. Image of a flower in the foreground. View at an observation angle of 135º. Image of a flower in the foreground