Disc-shaped high-density recording mediums

Disc-shaped high-density recording mediums

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...

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Hauptverfasser: Bruder, Friedrich-Karl, Haese, Wilfried, Oser, Rafael, Wiekard, Jan, Fischer, Wolfgang, Protte, Rainer, Wehrle, Joerg, Hildenbrand, Karlheinz
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Sprache:eng
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creator Bruder, Friedrich-Karl
Haese, Wilfried
Oser, Rafael
Wiekard, Jan
Fischer, Wolfgang
Protte, Rainer
Wehrle, Joerg
Hildenbrand, Karlheinz
description 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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title Disc-shaped high-density recording mediums
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