Abstract: 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, 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 05 and a transcriptability of the pit/groove structure of >85%.
Type:
Application
Filed:
December 12, 2009
Publication date:
December 8, 2011
Applicants:
Bayer MAterialScience (China) Company Ltd., Bayer MaterialScience AG
Inventors:
Friedrich-Karl Bruder, Wilfried Haese, Rafael Oser, Rainer Protte, Alexander Meyer, Karlheinz Hildenbrand, Raymond Wong, Ice Zhang