发明名称 |
INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD, RECORDING/REPRODUCING METHOD, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE |
摘要 |
<p>An information recording medium is provided that includes a recording portion (3), which is irradiated with a recording light or a reproducing light so that information is recorded or reproduced thereto or therefrom. The recording portion (3) contains a first phosphor and a photon-mode photosensitive material. The first phosphor has a property of absorbing a first light having a wavelength of » 1 /n and then emitting a second light having a wavelength longer than that of the first light, where » 1 is a wavelength of the recording light. The photosensitive material absorbs the second light and then exhibits a change in an optical constant thereof. A n-photon absorption sensitivity of the first phosphor with respect to the recording light is greater than a n-photon absorption sensitivity of the photosensitive material with respect to the recording light, where n is an integer not less than 2.</p> |
申请公布号 |
EP1630599(A1) |
申请公布日期 |
2006.03.01 |
申请号 |
EP20040735114 |
申请日期 |
2004.05.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SHIONO, TERUHIRO;YAMAMOTO, HIROAKI;NISHINO, SEIJI;ITO, TATSUO |
分类号 |
G11B7/24;G03C1/72;G03C1/73;G11B7/00;G11B7/0045;G11B7/135;(IPC1-7):G03C1/73;G11B7/004 |
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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