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    • 1. 发明申请
    • Optical recording medium
    • 光记录介质
    • US20040152016A1
    • 2004-08-05
    • US10748979
    • 2003-12-30
    • TDK Corporation
    • Koji MishimaHiroyasu InoueTsuyoshi KomakiDaisuke YoshitokuHitoshi AraiKenji YamagaHironori Kakiuchi
    • G11B007/24
    • G11B7/24038G11B7/2433G11B7/256G11B7/257Y10S430/146
    • An optical recording medium includes a substrate and a plurality of recording layers laminated via at least intermediate layers, at least one of the recording layers other than a recording layer farthest from a light incidence plane among the plurality of recording layers containing at least one metal M selected from a group consisting of Ni, Cu, Si, Ti, Ge, Zr, Nb, Mo, In, Sn, W, Pb, Bi, Zn and La and an element X which can combine with the metal M upon being irradiated with a laser beam for recording data, thereby forming a crystal of a compound of the element X with the metal M. According to the thus constituted optical recording medium, it is possible to record data in and reproduce from a farthest recording layer from a light incidence plane in a desired manner and it is possible to record data in and reproduce from recording layer(s) other than the farthest recording layer from the light incidence plane in a desired manner.
    • 一种光记录介质,包括至少中间层层叠的基板和多层记录层,所述多个记录层中的至少一个记录层,其中所述多个记录层中的至少一个记录层不同于多个记录层中最远离光入射面的记录层, 选自由Ni,Cu,Si,Ti,Ge,Zr,Nb,Mo,In,Sn,W,Pb,Bi,Zn和La组成的组中的一种元素X,以及可以与金属M组合的元素X 用于记录数据的激光束,从而用金属M形成元件X的化合物的晶体。根据这样构成的光学记录介质,可以将记录数据从最远的记录层记录并从其再现 以期望的方式平面,并且可以以期望的方式将数据记录在除光入射平面以外的记录层之外的记录层并从其再现。
    • 4. 发明申请
    • Optical recording medium and method for recording and reproducing data
    • 光记录介质和数据记录和再现方法
    • US20040052194A1
    • 2004-03-18
    • US10613525
    • 2003-07-03
    • TDK Corporation
    • Hiroyasu InoueHironori KakiuchiMasaki AoshimaKoji Mishima
    • G11B007/135
    • G11B7/258G11B7/24038G11B7/243G11B7/259
    • An optical recording medium includes a substrate, a light transmission layer and a plurality of recording layers between the substrate and the light transmission layer and capable of recording data in the plurality of recording layers and reproducing data recorded in the plurality of recording layers by projecting a laser beam via the light transmission layer onto the plurality of recording layers, at least one recording layer other than a farthest recording layer from the light transmission layer among the plurality of recording layers including a first recording film containing Si as a primary component and a second recording film located in the vicinity of the first recording film and containing Cu as a primary component. In the thus constituted optical recording medium, it is possible to record data in a farthest recording layer from the light transmission layer and reproduce data from the farthest recording layer in a desired manner.
    • 光学记录介质包括基板,透光层和在基板和光透射层之间的多个记录层,并且能够在多个记录层中记录数据,并且通过投影一个记录层来再现记录在多个记录层中的数据 激光束经由光透射层到多个记录层上,在多个记录层之中的至少一个与光传输层最远的记录层之间的记录层包括含有Si作为主要成分的第一记录膜和第二记录层 记录膜位于第一记录膜附近并含有Cu作为主要成分。 在这样构成的光记录介质中,可以将数据记录在距离光传输层最远的记录层中,并以期望的方式从最远的记录层再现数据。
    • 6. 发明申请
    • Optical recording medium
    • 光记录介质
    • US20040110086A1
    • 2004-06-10
    • US10717831
    • 2003-11-20
    • TDK Corporation
    • Hironori KakiuchiHiroyasu Inoue
    • G11B007/24
    • G11B7/24038G11B7/00456G11B7/243G11B7/254G11B7/257G11B7/258G11B7/2585G11B2007/24304G11B2007/2431G11B2007/24312G11B2007/24314G11B2007/25706G11B2007/25715Y10S430/146
    • An optical recording medium includes a substrate, a protective layer and a plurality of information recording layers between the substrate and the protective layer and capable of recording data in the plurality of information recording layers and reproducing data recorded in the plurality of information recording layers by projecting a laser beam via a light incidence plane constituted by one of the surfaces of the substrate and protective layer onto the plurality of information recording layers, each of the information recording layers other than a farthest information recording layer from the light incidence plane including two recording films, a first dielectric film located on the side of the light incidence plane with respect to the two recording films and containing an oxide as a primary component and added with nitrogen, and a second dielectric film located on the opposite side of the light incidence plane with respect to the two recording films and having a lower thermal conductivity than that of the first dielectric film. According to the thus constituted optical recording medium, it is possible to improve the heat radiation characteristic and the optical property of information recording layers other than the information recording layer farthest from the light incidence plane.
    • 光学记录介质包括基板,保护层和在基板和保护层之间的多个信息记录层,并且能够在多个信息记录层中记录数据,并通过投影来再现记录在多个信息记录层中的数据 通过由基板和保护层的表面之一构成的激光束到多个信息记录层上的信息记录层中的每个信息记录层,除了包含两个记录膜的光入射面最远的信息记录层 相对于两个记录膜位于光入射面侧并且含有氧化物作为主要成分并加入氮的第一电介质膜,以及位于光入射面相对侧的第二电介质膜, 相对于两个记录膜并具有较低的热导体 比第一介电膜的电位高。 根据这样构成的光记录介质,可以提高除光入射面最远的信息记录层以外的信息记录层的散热特性和光学特性。
    • 9. 发明申请
    • Optical recording disk
    • 光盘录像机
    • US20040202097A1
    • 2004-10-14
    • US10818324
    • 2004-04-05
    • TDK Corporation
    • Hisaji OyakeYuuichi KawaguchiHiroaki TakahataKouji MishimaHiroyasu InoueTsuyoshi KomakiMasaki AoshimaHironori Kakiuchi
    • G11B007/24
    • G11B7/24079G11B7/00718G11B7/24038G11B7/24076G11B7/24082G11B7/243G11B7/258G11B7/266
    • An optical recording disk includes a support substrate, grooves and lands alternately formed on one major surface of the support substrate, an optical functioning layer formed on the one major surface of the support substrate on which the grooves and the lands are formed and including a recording layer and a light transmission layer formed on the optical functioning layer, the grooves and the lands being formed so that the depth Gd of each of the grooves is equal to or larger than 15 nm and equal to or smaller than 25 nm and the half width Gw is equal to or larger than 150 nm and is equal to or smaller than 230 nm, and the recording layer including a first recording film containing Si as a primary component and a second recording film containing Cu as a primary component. According to the thus constituted optical recording disk, it is possible to suppress jitter of a signal obtained by reading data within a predetermined range, thereby suppressing reading errors, and it is possible to maintain the level of a push-pull signal equal to or higher than a predetermined value, thereby enabling tracking control in a desired manner.
    • 光记录盘包括支撑基板,交替地形成在支撑基板的一个主表面上的凹槽和凸台,形成在支撑基板的一个主表面上的光学功能层,其上形成有凹槽和凸台,并且包括记录 层和形成在光学功能层上的光透射层,所述凹槽和焊盘形成为使得每个凹槽的深度Gd等于或大于15nm且等于或小于25nm,并且半宽度 Gw等于或大于150nm并且等于或小于230nm,并且记录层包括含有Si作为主要成分的第一记录膜和含有Cu作为主要成分的第二记录膜。 根据这样构成的光记录盘,可以抑制通过在预定范围内读取数据而获得的信号的抖动,从而抑制读取误差,并且可以保持等于或更高的推挽信号的电平 从而能够以期望的方式进行跟踪控制。
    • 10. 发明申请
    • Optical recording medium
    • 光记录介质
    • US20040174804A1
    • 2004-09-09
    • US10792083
    • 2004-03-03
    • TDK Corporation
    • Hironori KakiuchiHiroyasu Inoue
    • G11B007/24
    • G11B7/24038G11B7/243G11B7/257G11B2007/25706G11B2007/25715
    • An optical recording medium includes a support substrate and two information recording layers, an information recording layer close to a light incidence plane through which a laser beam is projected including a first dielectric film, a second dielectric film and a recording layer disposed between the first dielectric film and the second dielectric film and a thickness of each of the first dielectric film and the second dielectric film being determined so as to be equal to or larger than D21 and equal to or smaller than D22, where D21 is smaller than D2, D22 is larger than D2, and D21 and D22 are determined in such a manner that the dependency X of light transmittance of the information recording layer close to the light incidence plane on the wavelength of a laser beam is smaller than 1.2nullX2 when each of the first dielectric film and the second dielectric film has a thickness of D21 to D22, where X2 is the wavelength dependency corresponding to a second smallest thickness among a plurality of thicknesses at which the dependency X of light transmittance of the information recording layer close to the light incidence plane on the wavelength of a laser beam locally becomes minimal. According to thus constituted optical recording medium, it is possible to markedly reduce the dependency of light transmittance of the information recording layer close to the light incidence plane on the wavelength of the laser beam.
    • 光记录介质包括支撑基板和两个信息记录层,靠近激光束投射的光入射平面的信息记录层,包括第一电介质膜,第二电介质膜和设置在第一介电层之间的记录层 膜和第二电介质膜,并且第一电介质膜和第二电介质膜中的每一个的厚度被确定为等于或大于D21且等于或小于D22,其中D21小于D2,D22是 大于D2,并且D21和D22以这样的方式确定:当第一个信号记录层中的每个第一个和第二个信号记录层上的信号记录层的光透射率相对于激光束的波长接近光入射面的依赖度X小于1.2×X 2 电介质膜和第二电介质膜具有D21至D22的厚度,其中X2是在plura中对应于第二最小厚度的波长依赖性 信息记录层的光透射率与激光束的波长相近的光入射面的依赖关系X的局部厚度变得最小。 根据这样构成的光记录介质,可以显着地减少靠近光入射面的信息记录层的光透射率对激光束的波长的依赖性。