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Phase-change recording medium for track-leading according to the differential phase detection procedure
Phase-change recording medium for track-leading according to the differential phase detection procedure
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机译:相变记录介质,用于根据差分相位检测程序进行超前
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摘要
An erasable phase change recording medium includes a transparent substrate (10a), a recording layer (10c) of a phase change material provided on the substrate, and a protection layer (10b,10d) provided to protect the recording layer on the substrate. Tracks are formed with alternate grooves and lands on the substrate of the recording medium and data is recorded to at least one of the grooves and the lands. The recording medium is configured to have a track pitch between 0.6 mu m and 0.8 mu m and a groove depth between 0.11.L and 0.18.L where L is a wavelength of a laser beam. A heat radiation layer (10e) is deposited on the upper protection layer (10d). IMAGE
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