发明名称 |
Record carrier in disk form having cover layers |
摘要 |
The invention relates to a disk-shaped record carrier, for example a video plate, which is provided on one side or on both sides with a radiation-reflecting surface structure in the form of an information track consisting of blocks and pits on which a reflecting layer of metal is provided. The plate can be read optically. According to the invention the reflecting metal layer is provided with a cover layer which is formed by a transparent plate which is connected to the metal surface by means of a radiation-curable lacquer. The lacquer is preferably a U.V. curing lacquer and contains a protic mixture of acrylic acid esters. The transparent plate is also preferably manufactured from a transparent synthetic resin and has a thickness of 200 mu m.
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申请公布号 |
US4188433(A) |
申请公布日期 |
1980.02.12 |
申请号 |
US19780926953 |
申请日期 |
1978.07.20 |
申请人 |
U S PHILIPS CORP |
发明人 |
BROEK, ARNOLDUS J M VAN DEN;DIJKSTRA, RINSE;LIPPITS, GERARDUS J M |
分类号 |
G11B7/24;G11B7/254;G11B7/257;G11B7/258;(IPC1-7):G11B7/24;B32B27/08;B32B27/30 |
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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