发明名称 |
Optical recording medium |
摘要 |
There is disclosed an optical recording medium for high density recording without degradation of reproducing output signals. The optical recording medium includes a transparent substrate made of resin having an information recorded portion on which optically readable information signals are recorded, a thermochromic layer provided over the transparent substrate, the thermochromic layer having a larger light transmittance when the thermochromic layer has a higher temperature than a threshold value by absorbing heat off a laser beam spot and the thermochromic layer having a smaller light transmittance when the thermochromic layer has a lower temperature than the threshold value by being cooled down, and a reflecting layer provided on the thermochromic layer, wherein a heat radiating layer made of transparent inorganic material is further provided in contact with the thermochromic layer so as to absorb heat generated in the thermochromic layer by being irradiated with the laser beam spot.
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申请公布号 |
US5631056(A) |
申请公布日期 |
1997.05.20 |
申请号 |
US19950413426 |
申请日期 |
1995.03.30 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
KAWANISHI, TOSHINORI;KURODA, MIKIYA |
分类号 |
G11B7/005;G11B7/24;G11B7/257;(IPC1-7):B32B3/00 |
主分类号 |
G11B7/005 |
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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