DEVICES AND METHODS FOR OBTAINING OPTICAL EFFECT LAYERS CONTAINING ORIENTED NONSPHERICAL MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES

摘要

The present invention relates to the field of magnetic assemblies and processes for producing optical effect layers (OEL) comprising magnetically oriented non-spherical magnetic or magnetizable pigment particles on a substrate. In particular, the present invention relates to magnetic assemblies and processes for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes.