| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact type information medium capable of suppressing transmission of various ions and capable of preventing corrosion of an antenna. <P>SOLUTION: A non-contact type information medium includes: an antenna base material 20; a non-contact type IC inlet having a coil antenna 21 provided on one face of the antenna base material 20 and an IC chip 22 which is mounted on one face of the antenna base material 20 and to which the coil antenna 21 is connected; and a pair of external base materials 30a, 30b laminated and adhered on one face of the antenna base material 20 exposed to the surface of the coil antenna 21 and to the outside of the coil antenna 21 and on the face of the antenna base material 20 opposite to the one face, respectively, via adhesive layers 31a, 31b respectively. The cross-sectional shape of the coil antenna 21 in the width direction perpendicular to the lengthwise direction of the coil antenna 21 is formed such that the face of the coil antenna 21 in contact with one face of the antenna base material 20 is a plane and the face of the coil antenna 21 opposite to the plane has a convex circular arc surface. <P>COPYRIGHT: (C)2012,JPO&INPIT |
