发明名称 |
Disc-shaped high-density recording mediums |
摘要 |
Optical recording mediums comprising a substrate and a recording layer and a light transmitting layer sequentially disposed on the substrate; wherein the substrate comprises one or more parts selected from the group consisting of injection molded parts, injection molded sandwich structures having a molded surface layer and a molded core layer or two injection molded parts which are UV-bonded, and combinations thereof; and wherein the substrate has a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05.
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申请公布号 |
US2009104395(A1) |
申请公布日期 |
2009.04.23 |
申请号 |
US20080288203 |
申请日期 |
2008.10.17 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
BRUDER FRIEDRICH-KARL;HAESE WILFRIED;OSER RAFAEL;WEIKARD JAN;FISCHER WOLFGANG;PROTTE RAINER;WEHRLE JOERG;HILDENBRAND KARLHEINZ |
分类号 |
G11B3/68;B32B27/28;B32B27/30;B32B27/32;G11B7/253;G11B7/2534;G11B7/2536;G11B7/2538;G11B7/254;G11B7/2545 |
主分类号 |
G11B3/68 |
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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