Metallic Ink
An ink containing metallic pigments of bronze and aluminum. It has a specific metallic glitter. Unlike optically variable ink, when changing the angle of view, while looking at the image applied by metallic ink, glitter intensity changes only. The colour does not change (fig. 1).
Fig. 1. Zoomed fragment of the image printed with the metallic ink. 50 000 Zambian Kwacha (2006)