Apparatus and process for producing an optical effect layer comprising oriented non-spherical magnetic pigment particles 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 pigment particles or magnetizable pigment particles on a substrate. In particular, the present invention relates to a magnetic assembly and process for producing the OEL on a security document or security article as a forgery prevention means or for decoration purposes. [Selection] Figure 1A