发明名称 |
Method of manufacturing disc-shaped recording medium |
摘要 |
Disclosed is a disc-shaped recording medium manufacturing method capable of making it difficult to leave the cutting wastage produced upon forming a notch for exfoliating a stamper on a disc-shaped substrate in the case of adopting a stamper-based transfer method, and surely forming the notch to improve a manufacturing yield. This disc-shaped recording medium manufacturing method is that a spacer layer having recording faces on both surfaces thereof is formed between the disc-shaped substrate and the stamper, a notch is formed in the vicinity of an outer peripheral edge of the stamper by a rotary blade of a circle cutter, and the stamper is exfoliated through the notch while the spacer layer stays on the disc-shaped substrate. |
申请公布号 |
EP1512521(A3) |
申请公布日期 |
2005.06.15 |
申请号 |
EP20040020763 |
申请日期 |
2004.09.01 |
申请人 |
TDK CORPORATION |
发明人 |
KOMAKI, TSUYOSHI;YAMATSU, SHIGERU |
分类号 |
G11B7/24;B29C35/08;B29C37/02;B29C39/08;B29C39/10;B29C59/02;G11B7/26 |
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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