发明名称 |
OPTICAL INFORMATION RECORDING MEDIUM, METHOD OF RECORDING AND REPRODUCING, AND OPTICAL RECORDING AND REPRODUCING SYSTEM |
摘要 |
<p>At least one information layer including a recording layer contains a material that can exhibit a transition between two optically different states in response to irradiation with a laser beam as a main component is provided on a substrate, and the material is configured so as to exhibit an energy gap ranging from 0.9 eV to 2.0 eV in the amorphous state. The information layer is configured to have a light transmittance of not less than 30 % when irradiated with a laser beam having a wavelength ranging from 300 nm to 450 nm. It is possible to achieve excellent recording/reproduction, even if a plurality of recording layers are provided in the recording medium, when this medium is irradiated with a laser beam with a wavelength in the foregoing range from one side of the medium. <IMAGE></p> |
申请公布号 |
EP1189216(A1) |
申请公布日期 |
2002.03.20 |
申请号 |
EP20000981838 |
申请日期 |
2000.12.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
UNO, MAYUMI;YAMADA, NOBORU |
分类号 |
G11B7/24;G11B7/243;G11B7/257;(IPC1-7):G11B7/24;G11B7/004;B41M5/26 |
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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