Forgery / alteration prevention medium, apparatus for making falsification alteration prevention medium and method for producing forgery / alteration prevention medium

摘要

A forgery prevention medium includes a substrate and a specific invisible material layer directly or indirectly laminated on the substrate, having a specific invisible material reversibly and visually recognized through a predetermined process disposed thereon in a plane shape, and having a part of the specific invisible material inactivated in accordance with a visualized image pattern.