发明名称 |
FLAT INFORMATION RECORDING MEDIUM |
摘要 |
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. |
申请公布号 |
JPS6139950(A) |
申请公布日期 |
1986.02.26 |
申请号 |
JP19840162192 |
申请日期 |
1984.07.31 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
TANII KIYOSHI;KASHIHARA TOSHIAKI;OKINO YOSHIHIRO |
分类号 |
G11B7/24;G11B11/105 |
主分类号 |
G11B7/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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