| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a contactless communication medium and a manufacturing method for it capable of forming a print layer in metallic color on an armor sheet surface while reducing fluctuation in a resonance frequency due to static electricity and the like. <P>SOLUTION: In a contactless IC card, in which an antenna module 4 having an antenna coil and an IC chip 1 electrically connected to the antenna coil is put between a plurality of sheet materials including a pair of armor sheets 5, the print layer 8 formed on the surface of the armor sheet 5 is formed by using paint containing 1.3 g/m2 or less of aluminum powder. In this way, fluctuation in the resonance frequency due to static electricity and the like can be reduced even though the print layer in metallic color is formed on the armor sheet surface, and a communication characteristic can be stabilized. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
