Patent ID: 9127181
Filing Date: 2015-09-08
Classification: B41M,B42D,C09D,G03G

Abstract:
1. A taggant particle group which is an aggregate of taggant particles each of which has a plurality of identification information items, Wherein one or more identification information items among the plurality of identification information items possessed by each of the taggant particles that constitute the taggant particle group are common identification information that is possessed in common by the taggant particles that constitute the taggant particle group, and one or more identification information items other than the common identification information among the plurality of identification information items possessed by each of the taggant particles that constitute the taggant particle group are non-common identification information, the non-common identification information possessed by a first taggant particle among the taggant particles that constitute the taggant particle group and the non-common identification information possessed by a second taggant particle other than the first taggant particle among the taggant particles that constitute the taggant particle group are different identification information items from each other, authenticity of an anti-counterfeit medium comprising the taggant particle group is determined by a combination of the non-common identification information possessed by the first taggant particle and the non-common identification information possessed by the second taggant particle, and each of the plurality of identification information items is an information item selected from the group consisting of shape, a size, a mark and a color, the information item which can be identified by each of the taggant particles, and the information item which can be identified through observation using a simple magnifying mechanism.