ANTIFALSIFYING PRINTED MATTER AND ANTIFALSIFYING INK OR TONER

摘要

PROBLEM TO BE SOLVED: To surely prevent important printed matters such as securities, certificates or the like from being falsified with a color copying machine or the like by a method wherein the ready discrimination of a duplicate of an authentic matter by the color copying machine or the like is realized in view of insufficient antifalsification of the important printed matters such as securities, certificates or the like. SOLUTION: An antifalsifying printed matter, which includes a wavelength converting coloring matter of at least one color among a plurality of coloring matters to use in a color printed matter and in antifalsifying ink or toner, in which at least one among two or more kinds of the coloring matters to be mixed is the wavelength converting coloring matter, are employed for solving a problem on antifalsification.