发明名称 |
OPTICAL DATA RECORDING MEDIUM, METHOD OF PRODUCING THE SAME AND METHOD OF REPRODUCING/ERASING RECORD |
摘要 |
<p>In a phase-change recording medium, a recording medium is provided with a barrier layer including Ge-N, Ge-N-O between a recording layer and a dielectric protective layer in order to prevent a chemical reaction and an atom diffusion between the recording layer and the dielectric protective layer. A barrier material can be also applied to the protective layer itself. Thereby, it is possible to considerably suppress a reduction of a reflectivity and a reduction of a signal amplitude due to the repeat of recording and erasing, such reductions being observed in a conventional phase-change optical information recording medium, and thereby the number of overwriting times can be increased . <IMAGE></p> |
申请公布号 |
EP0825595(B1) |
申请公布日期 |
2004.07.28 |
申请号 |
EP19970906859 |
申请日期 |
1997.03.07 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMADA, NOBORU;OTOBA, MAYUMI;NAGATA, KENICHI;KAWAHARA, KATSUMI |
分类号 |
G11B7/2578;G11B7/0045;G11B7/0055;G11B7/006;G11B7/007;G11B7/2433;G11B7/26;(IPC1-7):G11B7/24;G11B7/00 |
主分类号 |
G11B7/2578 |
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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