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With respect to the authentic item distinction field which possesses the tint block pattern where the authentic decision
With respect to the authentic item distinction field which possesses the tint block pattern where the authentic decision
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机译：关于具有色调块模式的真实项目区分字段，其中真实决策
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摘要
PROBLEM TO BE SOLVED: To provide a forgery-preventive printed medium which is suitable for a relatively small lot production and can be easily checked for its genuineness and a method for checking the genuineness of printed mediums. SOLUTION: The genuineness-checkable forgery-preventive printed medium 10 comprises a medium base material 11 having a genuineness checking region 11a, a color variable printed layer 12 which is provided on the region 11a and can be seen in different colors as seen from different directions, and light- reactive printed layers 13, which emit a fluorescent light under exposure to ultraviolet or infrared rays, arranged on the layer 12 in a pattern. In the method for checking genuineness of printed mediums, the printed medium 10 is irradiated with ultraviolet or infrared rays to generate a fluorescent light in a printed portion to check the genuineness thereof by a mechanical recognition or visual inspection.
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