ANTICOUNTERFEIT PAPER AND METHOD FOR JUDGING TRUTH THEREOF

摘要

PROBLEM TO BE SOLVED: To provide anticounterfeit paper which is prepared by mixing paper with one or more magnetic metal fibers containing a fluorescent substance or a blue substance and corresponds to both overt and covert, and to provide a method for judging truth thereof.

SOLUTION: The anticounterfeit paper is mixed with paper with one or more magnetic metal fibers containing a fluorescent substance or a colored substance and having a relative magnetic permeability of 10 to 105. In this way, both Visibility and reactivity with a sensor coexist. The method for judging the truth is characterized by detecting the pattern of the position information of the magnetic metal fibers by two different methods including a detection with visible/infrared light or fluorescent light and a detection with magnetism, and then collating the obtained two patterns. The anticounterfeit effect can more be enhanced.

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