| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a label-type information medium allowing for detection of unauthorized peeling or replacement, and being difficult to be tampered. <P>SOLUTION: An IC tag label 10, which is the label type information medium, is provided with a break detection circuit section 23 which is a conductor connected to an IC chip 21, by being formed around an antenna section 22 on the outer periphery side of the antenna 22 section, as viewed from the direction of the normal line of a base 20 for detecting the breakage by application of voltage, and an easily broken section 70, which is formed at least in the break detection circuit section 23 and composed of a plurality of minute holes "m" which are distributed approximately uniformly. The holes "m" in the easily broken section 70 have diameters which are smaller than the width of the break detection circuit section 23 and do not penetrate through a first joining layer 30, and the easily broken section 70 has at least one section formed, at a position which is in contact with the outer periphery of the base 20. <P>COPYRIGHT: (C)2010,JPO&INPIT |
