Flat information recording carrier

Abstract

Abstract PURPOSE:To improve recording/reproducing characteristics and resistance to shock by clipping a recording medium with a glass substrate through which a ray for recording/reproduction or erasure is transmitted and a resin substrate for protection having flexibility and less moisture characteristic. CONSTITUTION:A guide pit 2 of concentric shape is formed on one side of the glass substrate 1 by an ultraviolet reinforced resin. An amorphous vertical magnetizing film is formed on a face formed with the guide pit 2 by means of sputtering as a recording medium 3. A polycarbonate substrate is used as the resin substrate 5 for protection and an ultraviolet curing resin is used for a bonding layer 4 bonding the recording medium 3 and the resin substrate 5. The glass substrate having high optical characteristics is used for the substrate through which the ray is transmitted, the resin substrate having a flexibility with less moisture absorption is used for the protection substrate to clip the recording medium thereby improving the recording/reproducing characteristic and resistance to shock.

Inventors

• 👤 Kiyoshi Tanii
• 👤 清 谷井
• 👤 Toshiaki Kashihara
• 👤 樫原　俊昭
• 👤 Yoshihiro Okino
• 👤 沖野　芳弘

Bibliographic Details