Ic card

Abstract

Abstract PURPOSE:To erase data written in an EPROM by ultraviolet-ray irradiation and inspects all IC cards by forming an opaque layer as part of the substrate of the IC module of an IC card, and forming a window for ultraviolet-ray removal in the opaque layer. CONSTITUTION:A recessed part 13 is formed in the IC card base material 12 of the IC card 15, and the IC module 1 is fitted in the recessed part with a filler 14. An IC chip 2 including the EPROM is arranged in this module 1, the opaque layer 4 is formed at part of the substrate of the module 1, and the window 11 for ultraviolet-ray removal is formed in the opaque layer 4. This opaque layer 4 is adhered to a transparent layer 3 made of a transparent polyester film, which is fitted in the window 11 formed in the opaque layer 4. Then, the module 1 is irradiated with ultraviolet-rays to erase data written in the EPROM, thus inspecting all IC cards 15.

Inventors

• 👤 Yoshihiko Nakahara
• 👤 中原　義彦

Bibliographic Details