发明名称 |
Optical recording medium and recording/reproducing method therefor |
摘要 |
The invention provides a phase charge type optical recording medium comprising on both sides of a recording layer dielectric layers, each containing zinc sulfide and silicon oxide as main components. The medium comprises on a substrate 2 a first dielectric layer 31, a recording layer 4, a second dielectric layer 32 and a reflective layer 5 made up of a metal. The first dielectric layer 32 comprises a dielectric lamina 1a on a substrate 2 side thereof and a dielectric lamina 1b on a recording layer 4 side thereof. The dielectric lamina 1a has a silicon oxide content of 2 to less than 40 mol %, the dielectric lamina 1b has a silicon oxide content of 40 to 100 mol %, and the second dielectric layer 32 has a silicon oxide content of 2 to 50 mol % and a thickness of 10 to 35 nm. The number of overwritable cycles can be increased.
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申请公布号 |
US6042921(A) |
申请公布日期 |
2000.03.28 |
申请号 |
US19980131865 |
申请日期 |
1998.08.10 |
申请人 |
TDK CORPORATION |
发明人 |
YOSHINARI, JIRO;KOSUDA, MASANORI;SHINGAI, HIROSHI;MIYAZAKI, SHINJI |
分类号 |
G11B7/254;G11B5/62;G11B7/00;G11B7/0045;G11B7/0055;G11B7/257;(IPC1-7):B32B3/00 |
主分类号 |
G11B7/254 |
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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