发明名称 |
INFORMATION RECORDING MEDIA |
摘要 |
<p>An information recording medium is described comprising two superposed resin substrates, at least one of which is provided on its inner surface with a recording layer and a center hole, a hub comprising two parts, each disposed on a respective side of the disc, and each part comprising an insertion portion disposed in the center hole and a flange portion extending over the surface of the respective substrate in the vicinity of the center hole, a notch provided on the insertion portion of each part, and an adhesive joining the hubs to the substrates and to each other. <IMAGE></p> |
申请公布号 |
EP0430629(A3) |
申请公布日期 |
1992.09.16 |
申请号 |
EP19900312846 |
申请日期 |
1990.11.27 |
申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD. |
发明人 |
KURISU, MASAYOSHI, C/O MITSUI PETROCHEM. IND. LTD.;TOKITA, SUGURU, C/O MITSUI PETROCHEM. IND. LTD. |
分类号 |
G11B7/24;G11B7/243;G11B7/2533;G11B7/2534;G11B7/2538;(IPC1-7):G11B7/24 |
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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