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    • 8. 发明授权
    • Optical recording medium and optical recording apparatus
    • 光记录介质和光记录装置
    • US06406771B1
    • 2002-06-18
    • US09692458
    • 2000-10-20
    • Hideo NakakukiTakeshi AraiToshihisa Nonaka
    • Hideo NakakukiTakeshi AraiToshihisa Nonaka
    • B32B302
    • G11B7/006G11B7/00454G11B7/007G11B7/24G11B7/24085G11B7/243G11B7/2534G11B7/2585G11B2007/2431G11B2007/24312G11B2007/24314G11B2007/24316G11B2007/25706G11B2007/25708G11B2007/25711G11B2007/25713G11B2007/25715Y10T428/21
    • The object of this invention is to provide a rewritable phase change type optical recording medium and an optical recording apparatus that are good in erasure characteristics and small in jitter even in high linear velocity high density recording, are unlikely to cause cross erasure even in the use of a substrate with a narrow track width, are unlikely to be deteriorated in signal quality even after repeated irradiation with a laser beam, and are good also in storage durability. The object of this invention can be achieved by a phase change type optical recording medium, characterized in that at least a first dielectric layer, a first boundary layer, a recording layer, a second boundary layer, an absorption correction layer and a reflection layer are provided in this order on a substrate, that the recording layer has a specific composition, that the first and second boundary layers are respectively mainly composed of at least one selected from carbon, carbides, oxides and nitrides, and that the absorption correction layer is 1.0 to 4.0 in refractive index and 0.5 to 3.0 in attenuation coefficient.
    • 本发明的目的是提供即使在高线速度高密度记录中也具有良好的擦除特性和抖动小的可重写相变型光学记录介质和光学记录装置,即使在使用中也不会引起交叉擦除 具有窄轨道宽度的基板,即使在用激光束重复照射之后也不可能劣化信号质量,并且也具有良好的储存耐久性。本发明的目的可以通过相变型光学记录介质 其特征在于,至少第一介电层,第一边界层,记录层,第二边界层,吸收校正层和反射层依次设置在基板上,记录层具有特定的组成 第一和第二边界层分别主要由选自碳,碳化物,氧化物和氮化物中的至少一种构成 吸收校正层的折射率为1.0〜4.0,衰减系数为0.5〜3.0。