| 摘要 |
<p>[PROBLEMS TO BE SOLVED] It is a problem to provide a method for making it possible to judge whether a subject is true or false and a tool for judging whether it is true or false without being influenced by a shine of metal used in the true-false judgment of a forgery preventive body with a reflective thin film layer of a metallic thin film or the like. [MEANS FOR SOLVING THE PROBLEM] A true/false judging method for judging whether a sheet-like counterfeit preventive structure provided with at least a light reflective thin film layer and a counterfeit preventive layer is true or false is carried out by using a discriminator. The method is characterized in that the true/false judgment is carried out by using the discriminator provided with a light diffusive true/false judging layer for judging whether the sheet-like counterfeit preventive structure is true or false or a true/false judging layer and a light diffusive layer for judging whether the sheet-like counterfeit preventive structure is true or false; a haze of the light diffusive true/false judging layer or the light diffusing layer ranges from 50-95%; and a total light-ray transmission rate ranges from 50-100%.</p> |
