CARD TYPE HOLOGRAM RECORD MEDIUM AND ITS PRODUCTION AND ITS REPRODUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To embody high-density recording by executing multiple recording in a card thickness direction of a card type hologram recording medium. SOLUTION: This card type hologram record medium has a structure obtd. by laminating hologram recording layers 1 to N on a substrate 11. The card type hologram record medium has also the structure obtd. by embedding the laminated hologram recording layers 1 to N input part of the substrate 11. the substrate 11 of the card type hologram record medium described above consists of a flexible material. The recording layers 1 to N consists of at least one among a thermosetting type resin, dyestuff material, dielectric material and phase transition material.