发明名称 |
OPTICAL DISK AND OPTICAL INFORMATION RECORDING METHOD |
摘要 |
<p>A rewritable phase change optical disk and a method of recording optical information on the optical disk in which a first dielectric film (2), a recording film (3), a second dielectric film (4) and a reflecting film (5) are stacked on a substrate (1) in this order; the recording film (3) having composition defined by a formula GexSbyTez wherein x, y and z are atomic percentages ranging from 7 to 17, 34 to 44 and 44 to 54, respectively, the x, y and z totalling 100; the recording film (3) having a thickness of 10 to 35 nm; the second dielectric film (4) having a thickness of 5 to 40 nm; the reflecting film (5) being made of one or an alloy of at least Au, Al, Ti, Cr and Ni and having a thickness of 35 nm or more. <IMAGE></p> |
申请公布号 |
EP0446679(A3) |
申请公布日期 |
1993.03.03 |
申请号 |
EP19910102484 |
申请日期 |
1991.02.21 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
OHNO, EIJI;NISHIUCHI, KENICHI;YAMADA, NOBORU;AKAHIRA, NOBUO |
分类号 |
G11B7/0045;G11B7/24;G11B7/241;G11B7/243;G11B7/2433;G11B7/253;G11B7/2534;G11B7/257;G11B7/258;G11B7/2585;G11B7/2595;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/0045 |
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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