An image is disclosed comprised of flakes in a carrier, such as an ink vehicle or a paint that can be aligned in a magnetic field. The flakes are aligned so as to produce one or more kinematic features such as a rolling bar that appears to move as the image is tilted. These images can provide security...http://www.google.fr/patents/US7604855?utm_source=gb-gplus-shareBrevet US7604855 - Kinematic images formed by orienting alignable flakes
Kinematic images formed by orienting alignable flakes
