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    • 7. 发明授权
    • Optical informaton recording medium
    • 光信息记录介质
    • US07981494B2
    • 2011-07-19
    • US12051627
    • 2008-03-19
    • Takuo KodairaIsao MatsudaTakeshi OtsuFumi Hara
    • Takuo KodairaIsao MatsudaTakeshi OtsuFumi Hara
    • B32B3/02
    • G11B7/246G11B7/2467G11B7/2472G11B7/2492G11B7/259Y10T428/21
    • In a write-once optical information recording medium including a substrate, a groove-shaped track such as a guiding groove, and an optical recording layer containing an organic dye material and disposed on the guiding groove, wherein information is recorded by irradiating a short-wavelength laser beam from a surface of the optical recording layer opposite the substrate, and the information can be reproduced by reading a change in the reflected light of a short-wavelength laser beam after the information recording, an unrecorded portion of the optical recording layer has a lower reflectance than a pit portion formed after recording to a portion of the optical recording layer, the optical recording layer has a refractive index n in the range of about 1.2 to about 2.1 before recording and an extinction coefficient k in the range of about 0.01 to about 0.7 before recording, and n+k is in the range of about 1.4 to about 2.1.
    • 在包括基板,诸如引导槽的凹槽形轨迹和包含有机染料材料并且设置在引导槽上的光学记录层的一次写入光信息记录介质中,其中通过照射短路来记录信息, 可以通过读取信息记录后的短波长激光束的反射光的变化来重现信息,光记录层的未记录部分具有 比在记录到光记录层的一部分之后形成的凹坑部分更低的反射率,光记录层在记录之前的折射率n在约1.2至约2.1的范围内,并且消光系数k在约0.01的范围内 在记录之前为约0.7,并且n + k在约1.4至约2.1的范围内。
    • 8. 发明申请
    • Optical Information Recording Medium, Manufacturing Method Thereof, and Recording Method Thereof
    • 光信息记录介质,其制造方法及其记录方法
    • US20100232277A1
    • 2010-09-16
    • US12223256
    • 2007-02-02
    • Isao MatsudaFumi Hara
    • Isao MatsudaFumi Hara
    • G11B7/24G11B7/00G11B7/26
    • G11B7/266G11B7/24035G11B7/24079G11B7/24085G11B7/246G11B7/2467G11B7/2472G11B7/2495G11B7/259G11B2007/24612
    • An object of the present invention is to provide an optical information recording medium suited for high-density and high-speed recording using a recording wavelength of 360 to 450 nm, in particular, around 400 nm (for example, 405 nm) and its recording method.The present invention is based not on a conventional High to Low method but on a Low to High method and, when the reflectance of the pit is higher than that of the non-pit area, the maximum film thickness of the recording layer at the track area where the pits are arranged is in the range from 25 to 60 nm and the maximum film thickness of the recording layer at the area adjacent to the track area is in the range of 5 to 30 nm, a satisfactory push-pull signal can be obtained. Further, the film thickness of the reflecting layer is preferably set in the range from 120 to 180 nm, and groove width of the reflection layer is preferably set in the range from 85 to 150 nm.
    • 本发明的目的是提供一种适用于使用360至450nm,特别是约400nm(例如405nm)的记录波长的高密度和高速记录的光学信息记录介质,并且其记录 方法。 本发明不是基于常规的从高到低的方法,而是基于从低到高的方法,并且当凹坑的反射率高于非凹坑区域的反射率时,记录层在轨道处的最大膜厚度 凹坑布置的区域在25至60nm的范围内,并且与轨道区域相邻的区域处的记录层的最大膜厚度在5至30nm的范围内,令人满意的推挽信号可以是 获得。 此外,反射层的膜厚优选设定在120〜180nm的范围内,反射层的槽宽优选设定在85〜150nm的范围内。
    • 10. 发明申请
    • OPTICAL INFORMATON RECORDING MEDIUM
    • 光信息记录介质
    • US20080260984A1
    • 2008-10-23
    • US12051627
    • 2008-03-19
    • Takuo KodairaIsao MatsudaTakeshi OtsuFumi Hara
    • Takuo KodairaIsao MatsudaTakeshi OtsuFumi Hara
    • B32B3/02B32B37/00
    • G11B7/246G11B7/2467G11B7/2472G11B7/2492G11B7/259Y10T428/21
    • In a write-once optical information recording medium including a substrate, a groove-shaped track such as a guiding groove, and an optical recording layer containing an organic dye material and disposed on the guiding groove, wherein information is recorded by irradiating a short-wavelength laser beam from a surface of the optical recording layer opposite the substrate, and the information can be reproduced by reading a change in the reflected light of a short-wavelength laser beam after the information recording, an unrecorded portion of the optical recording layer has a lower reflectance than a pit portion formed after recording to a portion of the optical recording layer, the optical recording layer has a refractive index n in the range of about 1.2 to about 2.1 before recording and an extinction coefficient k in the range of about 0.01 to about 0.7 before recording, and n+k is in the range of about 1.4 to about 2.1.
    • 在包括基板,诸如引导槽的凹槽形轨迹和包含有机染料材料并且设置在引导槽上的光学记录层的一次写入光信息记录介质中,其中通过照射短路来记录信息, 可以通过读取信息记录后的短波长激光束的反射光的变化来重现信息,光记录层的未记录部分具有 比在记录到光记录层的一部分之后形成的凹坑部分更低的反射率,光记录层在记录之前的折射率n在约1.2至约2.1的范围内,并且消光系数k在约0.01的范围内 在记录之前为约0.7,并且n + k在约1.4至约2.1的范围内。