DISC-SHAPED HIGH-DENSITY RECORDING MEDIUMS

This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and / or reproducing information signals, said su...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAESE, WILFRIED, BRUDER, FRIEDRICH-KARL, HILDENBRAND, KARLHEINZ, WEIKARD, JAN, PROTTE, RAINER, WEHRLE, JOERG, OSER, RAFAEL, FISCHER, WOLFGANG
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and / or reproducing information signals, said substrate comprising an injection molded part or have an injection molded sandwich structure with a molded surface layer (skin layer) and a molded core layer or a two injection molded parts which are UV-bonded, and said substrate having 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.