Phase-change type optical recording medium and reproduction method and apparatus for such a recording medium

A dual-layer structure phase-change type optical recording medium includes a substrate (1), a reflective layer (2), a first protective layer (3), a first recording layer (4), a second protective layer (5), a resin intermediate layer (6), a third protective layer (7), a heat release layer (8) made of...

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Main Author SHINOZUKA MICHIAKI,MAGAI MASARU,SEKIGUCHI HIROYOSHI,HIBINO EIKO,KATO MASANORI,YAMADA KATSUYUKI,NAKAYAMA MASAHIKO
Format Patent
LanguageEnglish
Published 15.08.2007
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:A dual-layer structure phase-change type optical recording medium includes a substrate (1), a reflective layer (2), a first protective layer (3), a first recording layer (4), a second protective layer (5), a resin intermediate layer (6), a third protective layer (7), a heat release layer (8) made of Cu or a Cu alloy, a fourth protective layer (9), a second recording layer (10), a fifth protective layer (11) and a cover substrate (12). A product of a reflectance of a high-reflection part and a modulation after recording is a value equal to or higher than a lower limit value for reproduction.
Bibliography:Application Number: CN2006800836