| 摘要 |
PROBLEM TO BE SOLVED: To reduce costs and to improve automatic tracking performance by using a conductive coil of a noncontact IC chip for a hydrid card as a tracing track that is necessary for the recording and reproduction of optical recording. SOLUTION: An optical IC hybrid card forms a hard-coated layer 1 on one surface of a transparent substrate 2, forms a tracking track part by providing a conductive coil 3 on the other surface with a constant pitch and forms an optical recorded layer 4 on it. On the other hand, a noncontact IC chip 5 that has a conductive member 6 is provided on a protective substrate 8. The substrates 2 and 8 are laminated together through an adhesive layer 7 to be in an optical hybrid card shape. The coil 3 which is used for the recording and reproduction of the chip 5 is also used for a tracking track for optical recording. Also, the reflectance of laser beams of the tacking tack part which is formed by the coil 3 is larger than the reflectance of a recording part. |
