COATED PAPER FOR PREVENTING COUNTERFEIT, METHOD AND APPARATUS FOR DISCRIMINATING TRUTH OF THE COATED PAPER

摘要

PROBLEM TO BE SOLVED: To obtain a coated paper for preventing counterfeit and discriminating truth, having high security, a relatively simple production process and a constitution of magnetism application for preventing counterfeit, not to be deciphered by a third party even in appearance and to provide both a method and an apparatus for discriminating truth. SOLUTION: In this coated paper (3) for preventing counterfeit obtained by forming at least one layer of a magnetic coated layer (2) made by coating one side of paper (1) for a substrate with a magnetic coating solution consisting essentially of a colored magnetic material particle, a pigment and an adhesive and drying, the coated paper for preventing counterfeit characterized in that the colored magnetic material particle is nonvisible in the color of the paper for a substrate and the coated paper for preventing counterfeit has specific magnetic characteristics usable for discriminating truth is produced, the magnetic characteristics of the surface of the paper preventing counterfeit is measured by a magnetism detection sensor to discriminate the truth of the coated paper for preventing counterfeit.