Anti-counterfeiting structure, anti-counterfeit stickers, forgery-preventing transfer foil, anti-counterfeiting ink, anti-counterfeit media, anti-counterfeiting paper, and authenticity determination method

摘要

PPROBLEM TO BE SOLVED: To provide a low-cost and high-productivity anti counterfeit measures difficult to fabricate by die picking that is difficult to determine under a normal visible-light source, capable of obtaining verification light of a variety of color variations, relative to light source types or the verification light of vivid color changes in a particular verification method, and further, producing a high anti counterfeit effects, using a proper pattern. PSOLUTION: An anti counterfeit structure (1) includes a particulate fixing layer (2), having spherical-shaped particulates (4) and a particulate fixation resin (3) for retaining and fixing the above spherical-shaped particulates (4). The particulate fixation resin (3) includes one resin type or more and is disposed so as not to bury the half height of or greater than the spherical-shaped particulates (4). The spherical-shaped particulates (4) are disposed in a single planar shape over the entire plane, or in an arbitrary shape, with an area filling rate of 30% or higher and have a mean particle diameter of 2.5 m or smaller, with 70% or higher of particles in number, included within a range which is not smaller than 0.8-fold and not larger than 1.2-fold of the mean particle diameter. PCOPYRIGHT: (C)2009,JPO&INPIT