| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact type IC card undergoing no warpage including a reversible thermal recording layer with good visibility on a small sheet-like support having small heat contraction. SOLUTION: The non-contact type IC card is formed by resin bonding sheet- like support bodies including on its surface a reversible thermal recording layer containing an achromatic or hypochromic dye precursor and a developer that can cause this to color and decolor reversibly, and the rear surfaces of the sheet-like support bodies each provided with a printing layer on its surface, in which both sheet-like supports consist of a polymeric film of a thermal shrinkage of 0.2% or lower in the flow direction after heating at 150 deg.C and for 30 min., and an IC chip and antenna coil are mounted on either one of support rear surfaces. |
