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129 条记录 (耗时 0.022 秒)

    Magneto-optic memory device
    1.
    发明授权
    Magneto-optic memory device 失效
    磁光存储器件

    公开(公告)号：US5305254A

    公开(公告)日：1994-04-19

    申请号：US993517

    申请日：1992-12-17

    申请人： Yoshiteru Murakami ,  Junichiro Nakayama ,  Ichiro Hiramatsu ,  Akira Takahashi ,  Kenji Ohta ,  Kazuo Van ,  Hiroyuki Katayama

    发明人： Yoshiteru Murakami ,  Junichiro Nakayama ,  Ichiro Hiramatsu ,  Akira Takahashi ,  Kenji Ohta ,  Kazuo Van ,  Hiroyuki Katayama

    IPC分类号： G11B5/64 ,  G11B11/105 ,  G11C13/04

    CPC分类号： G11B5/64 ,  G11B11/10582

    摘要： A magneto-optic memory device, such as a magneto-optic disk or magneto-optic card having a pair of opposed substrates at least one of which is transparent. Between the substrates is a magneto-optic memory layer made of a stack of dielectric film, a rear earth-transition metal alloy thin film, a dielectric film and a light reflecting film built on the surface of the transparent substrate opposed to the other substrate. An adhesive layer covers the memory layer and bonds the transparent substrate to the other substrate. Lastly, a metal nitride film interposed between the light reflecting film of the memory layer and the adhesive layer.

    摘要翻译： 磁光存储器件，例如磁光盘或磁光卡，其具有一对相对的衬底，其中至少一个是透明的。 在基板之间是由与介质膜叠层构成的磁光存储层，后置接地 - 过渡金属合金薄膜，电介质膜和反射膜构成在与其他基板相对的透明基板的表面上。 粘合剂层覆盖存储层并将透明基底粘合到另一个基底上。 最后，介于存储层的光反射膜和粘合剂层之间的金属氮化物膜。

    Magneto-optical memory element
    2.
    再颁专利
    Magneto-optical memory element 失效
    磁光存储元件

    公开(公告)号：USRE35629E

    公开(公告)日：1997-10-14

    申请号：US136019

    申请日：1993-10-14

    申请人： Yoshiteru Murakami ,  Akira Takahashi ,  Kazuo Van ,  Junichiro Nakayama ,  Hiroyuki Katayama ,  Kenji Ohta

    发明人： Yoshiteru Murakami ,  Akira Takahashi ,  Kazuo Van ,  Junichiro Nakayama ,  Hiroyuki Katayama ,  Kenji Ohta

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B7/24

    CPC分类号： G11B11/10584 ,  G11B11/10586

    摘要： A magneto-optical memory element has a multi-layer construction in the order from a side first receiving light from a light-source which includes a first transparent dielectric film, a rare earth transition metal alloy film, a second transparent dielectric film and a reflective film. The magneto-optical device uses circular dichroism effect of a magnetic mater for reading information. The rare earth transition metal alloy film has a refractive index represented by n.+-..DELTA.n wherein n=3.2-3.55i and .DELTA.n=0.05-0.03i. The thickness of film is about 18 to 46 nm. The second transparent dielectric film has a refractive index of 2.0.+-.0.2 and a film thickness of 80 to 108 nm.

    摘要翻译： 磁光存储元件具有从第一次接收来自光源的一侧的顺序的多层结构，该光源包括第一透明电介质膜，稀土过渡金属合金膜，第二透明电介质膜和反射 电影。 磁光装置使用磁性体的圆二色性来读取信息。 稀土过渡金属合金膜的折射率为n +/- DELTA n，n = 3.2-3.55i，DELTA n = 0.05-0.03i。 膜的厚度为约18至46nm。 第二透明电介质膜的折射率为2.0 +/- 0.2，膜厚为80〜108nm。

    Magneto-optical recording medium
    7.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：US5705286A

    公开(公告)日：1998-01-06

    申请号：US163096

    申请日：1993-12-07

    申请人： Junji Hirokane ,  Yoshiteru Murakami ,  Hiroyuki Katayama ,  Akira Takahashi ,  Kenji Ohta

    发明人： Junji Hirokane ,  Yoshiteru Murakami ,  Hiroyuki Katayama ,  Akira Takahashi ,  Kenji Ohta

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/66

    CPC分类号： G11B11/10586 ,  Y10S428/90

    摘要： A magneto-optical recording medium has an exchange-coupled triplilayer film wherein a readout layer which has in-plane magnetization at room temperature, and in which a transition occurs from in-plane magnetization to perpendicular magnetization when temperature thereof is raised above T.sub.1, an intermediate layer which has perpendicular magnetization at room temperature, the perpendicular magnetization being maintained from room temperature to Curie temperature T.sub.3, and a recording layer which has perpendicular magnetization at room temperature, the perpendicular magnetization been maintained from room temperature to Curie temperature T.sub.2 which are laminated in this order, and the temperatures T.sub.1, T.sub.2 and T.sub.3 satisfy the following inequality: T.sub.1

    摘要翻译： 磁光记录介质具有交换耦合三层膜，其中在室温下具有面内磁化的读出层，并且其温度升高到T1以上时从平面内磁化转变为垂直磁化的读出层， 在室温下具有垂直磁化的中间层，垂直磁化维持在室温至居里温度T3，以及在室温下具有垂直磁化的记录层，垂直磁化维持在室温至居里温度T2之间，层压 按照该顺序，温度T1，T2和T3满足以下不等式：T1

    Optical memory having narrowed track pitch
    8.
    发明授权
    Optical memory having narrowed track pitch 失效
    具有窄轨道间距的光学存储器

    公开(公告)号：US5586109A

    公开(公告)日：1996-12-17

    申请号：US354457

    申请日：1994-12-12

    申请人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    发明人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B3/70

    CPC分类号： G11B7/261 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/26 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/0938

    摘要： A transparent substrate of an optical memory is produced by injection molding using a stamper. Grooves and lands are alternately arranged on the optical memory, for tracking of light converged on the optical memory. The groove width is set in the range of 0.3 .mu.m to 0.4 .mu.m and the groove depth is set in the rage of 80 nm to 100 nm. A decrease in the width of a land at each edge is restrained to 0.2 .mu.m in maximum. With such dimensions, even when the track pitch is set to about 1.4 .mu.m, it is possible to obtain a track crossing signal with intensity sufficient for performing an access operation to a target track. Moreover, since the dimensions bring about an improved reflectance at a land, the optical memory achieves an improved C/N and recording density.

    摘要翻译： 通过使用压模的注射成型制造光学存储器的透明基板。 沟槽和焊盘交替布置在光学存储器上，用于跟踪会聚在光学存储器上的光。 槽宽度设定在0.3μm〜0.4μm的范围内，槽深度设定在80nm〜100nm的范围内。 每个边缘的陆地宽度减小最大限制在0.2亩。 利用这样的尺寸，即使当轨道间距设置为大约1.4μm时，也可以获得具有足以对目标轨道进行访问操作的强度的轨迹交叉信号。 此外，由于尺寸在陆地上产生改进的反射率，所以光学存储器实现了改进的C / N和记录密度。

    Magneto-optical disk
    9.
    发明授权
    Magneto-optical disk 失效
    磁光盘

    公开(公告)号：US5486395A

    公开(公告)日：1996-01-23

    申请号：US984350

    申请日：1992-12-02

    申请人： Yoshiteru Murakami ,  Naoyasu Iketani ,  Akira Takahashi ,  Kenji Ohta

    发明人： Yoshiteru Murakami ,  Naoyasu Iketani ,  Akira Takahashi ,  Kenji Ohta

    IPC分类号： G11B11/10 ,  G11B11/105 ,  B32B3/02 ,  G11B5/66

    CPC分类号： G11B11/10504 ,  G11B11/10515 ,  G11B11/10582 ,  G11B11/10586 ,  Y10S428/90

    摘要： A magneto optical disk comprising: a circular substrate; a recording layer, formed on the substrate, for magneto-optical recording of information; a readout layer, formed between the substrate and the recording layer, for the reproduction of information recorded on the recording layer, wherein the readout layer has a Curie temperature which is higher than the Curie temperature of the recording layer, and exhibits in-plane magnetization at room temperature and a change from in-plane magnetization to perpendicular magnetization when its temperature rises over a certain temperature as a result of the application of a light beam, and wherein the magnetic compensation temperature is set such that it increases from the peripheral edge of the magneto-optical disk toward the center thereof. When the magneto-optical disk is used with a magneto-optical recording and reproducing device using a CAV system, it achieves high-density recording and the reproduction of signals with reduced noise, without causing the light beam control system to be complicated.

    摘要翻译： 一种磁光盘，包括：圆形衬底; 记录层，形成在基板上，用于磁光记录信息; 形成在基板和记录层之间的用于再现记录在记录层上的信息的读出层，其中读出层的居里温度高于记录层的居里温度，并且表现出面内磁化 在室温下由于施加光束而在其温度上升超过一定温度时从面内磁化变化到垂直磁化的变化，并且其中磁补偿温度被设定为使得其从外周边缘 磁光盘朝向其中心。 当磁光盘与使用CAV系统的磁光记录和再现装置一起使用时，可以实现高密度记录和降低噪声的信号的再现，而不会使光束控制系统复杂化。

    Substrate with protective film and method of manufacturing optical memory device using the same
    10.
    发明授权
    Substrate with protective film and method of manufacturing optical memory device using the same 失效
    具有保护膜的基板和使用其制造光学存储器件的方法

    公开(公告)号：US5002813A

    公开(公告)日：1991-03-26

    申请号：US384254

    申请日：1989-07-21

    申请人： Junichiro Nakayama ,  Kenji Ohta ,  Hiroyuki Katayama ,  Akira Takahashi ,  Yoshiteru Murakami

    发明人： Junichiro Nakayama ,  Kenji Ohta ,  Hiroyuki Katayama ,  Akira Takahashi ,  Yoshiteru Murakami

    IPC分类号： B42D15/10 ,  G06K19/06 ,  G11B7/24 ,  G11B7/26

    CPC分类号： G11B7/26 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T156/10 ,  Y10T428/239 ,  Y10T428/31507

    摘要： A substrate for manufacturing an optical memory device includes one surface covered with a protective film provided with openings only in portions corresponding to recording layers to be formed on the substrate, thereby allowing the protective film to function as a mask for forming the recording layers in a recording layer forming process. Also disclosed is a method of manufacturing an optical memory device including the steps of continuously feeding a substrate covered with a protective film provided with openings only in portions corresponding to recording layers to be formed on the substrate, forming the recording layers through the openings on the substrate, forming guide tracks on the substrate, stripping the protective film from the substrate, cutting the substrate to a predetermined size, and forming a protective layer on the substrate.

    摘要翻译： 用于制造光学存储器件的衬底包括一个被保护膜覆盖的表面，该保护膜仅在对应于要形成在衬底上的记录层的部分中具有开口，从而允许保护膜用作掩模，用于形成记录层 记录层形成过程。 还公开了一种制造光学存储器件的方法，包括以下步骤：将覆盖有保护膜的衬底连续地供给到仅在对应于要形成在衬底上的记录层的部分上的开口，通过上述开口形成记录层 基板，在基板上形成引导轨道，从基板剥离保护膜，将基板切割成预定尺寸，以及在基板上形成保护层。