Optical information recording medium, and substrate and manufacturing method for the optical information recording medium

In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though 0.27...

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Bibliographic Details
Main Authors Kondo, Tetsuya, Nakagawa, Eiji, Nagano, Hirofumi
Format Patent
LanguageEnglish
Published 29.07.2008
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Summary:In an optical disk including at least a rewritable phase change material and comprising a recording layer having a reflectivity of more than 15%, an address output value as an address pit signal component occupying in a reproduced signal in a non recording state is prescribed to be 0.18 though 0.27 or a numerical aperture of an address pit signal occupying in a reproduced signal in a non recording state is prescribed to be more than 0.3.