| 摘要 |
PROBLEM TO BE SOLVED: To prevent radio interference at the time of reading/writing information in the IC chip of an IC card capable of displaying and erasing an image on the recording layer of a reversible thermosensible recording material and to prevent ruggedness to be frequently formed on the surface of the card. SOLUTION: Concerning the IC card capable of displaying and erasing the image while incorporating the IC chip and having an antenna circuit part 7 and a recording layer 2 composed of the reversible thermosensible recording material, a light reflecting layer part 8 is located on the side of layer lower than the recording layer 2 of this IC card and this light reflecting layer part 8 and the antenna circuit part 7 are formed from the same metal layer M. Since distances from the front and back of the card to the light reflecting layer part 8 and the antenna circuit part 7 are equal, there is no radio interference, which is the problem of a conventional example, such as fetching a radio wave reflected on the light reflecting layer 8 into the antenna circuit part and information can be exactly recorded in the IC chip. |
