发明名称 |
Optical recording medium |
摘要 |
The disclosure describes an optical recording medium for recording, erasing and reading-out information by irradiation a laser beam, comprising: a lower dielectric protective layer, a phase-change-type recording layer, an upper dielectric protective layer and a metal reflective layer successively deposited on a transparent substrate formed with grooves, in which both of grooves and lands are used as a recorded region, a groove depth (d) satisfies the following relation (1): lambda /7n<d< lambda /5n(1)wherein lambda represents a wavelength of an irradiation light and n represents a refractive index of the substrate, and a groove width (GW) and a land width (LW) satisfy the following relation (2):0.1 mu m<GW<LW(2)
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申请公布号 |
US5581539(A) |
申请公布日期 |
1996.12.03 |
申请号 |
US19950513588 |
申请日期 |
1995.08.10 |
申请人 |
MITSUBISHI CHEMICAL CORPORATION |
发明人 |
HORIE, MICHIKAZU;KUNITOMO, HARUO;OHNO, TAKASHI;TAKADA, KENICHI;MIZUNO, HIRONOBU |
分类号 |
G11B7/0045;G11B7/006;G11B7/007;G11B7/24;G11B7/24079;G11B7/243;G11B7/254;G11B7/258;(IPC1-7):G11B7/24 |
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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