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    Method of making magneto-optical recording medium
    1.
    发明授权
    Method of making magneto-optical recording medium 失效
    制作磁光记录介质的方法

    公开(公告)号：US4929320A

    公开(公告)日：1990-05-29

    申请号：US368107

    申请日：1989-06-19

    申请人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Satoshi Matsubaguchi ,  Akira Nahara

    发明人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Satoshi Matsubaguchi ,  Akira Nahara

    IPC分类号： C23C14/34 ,  G11B11/105

    CPC分类号： C23C14/3464 ,  G11B11/10582

    摘要： A method of making a magneto-optical recording medium comprises the step of forming a magneto-optical recording layer on a substrate by simultaneously carrying out direct current sputtering and radio-frequency sputtering. Alternatively, a magneto-optical recording layer composed of thin rare earth metal layers and thin transition metal layers overlaid alternately on a substrate is formed by carrying out radio-frequency sputtering by use of a target formed of a rare earth metal material and direct current sputtering by use of a target formed of a transition metal material.

    摘要翻译： 制造磁光记录介质的方法包括通过同时进行直流溅射和射频溅射在基板上形成磁光记录层的步骤。 或者，通过使用由稀土金属材料形成的靶和直流溅射来进行射频溅射，形成由薄稀土金属层和薄过渡金属层组成的磁光记录层 通过使用由过渡金属材料形成的靶。

    Magneto-optical recording medium
    5.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：US4897320A

    公开(公告)日：1990-01-30

    申请号：US231613

    申请日：1988-08-11

    申请人： Masaaki Nomura ,  Takashi Yamada ,  Ryoichi Yamamoto ,  Akira Nahara

    发明人： Masaaki Nomura ,  Takashi Yamada ,  Ryoichi Yamamoto ,  Akira Nahara

    IPC分类号： G11B11/10 ,  G11B5/72 ,  G11B11/105

    CPC分类号： G11B5/72 ,  G11B11/10586 ,  Y10S428/90

    摘要： A magneto-optical recording medium comprises a recording layer formed of a magnetic material, and a protective layer composed of a combination of a dielectric material with a rare earth metal exhibiting a high oxygen absorptivity and formed on the recording layer by a simultaneous sputtering or a simultaneous deposition process, whereby free oxygen given rise to in the course of sputtering or deposition is absorbed on the protective layer side before being absorbed on the recording layer side.

    摘要翻译： 磁光记录介质包括由磁性材料形成的记录层和由电介质材料与表现出高氧吸收率的稀土金属的组合构成的保护层，并通过同时溅射形成在记录层上 同时沉积工艺，由此在溅射或沉积过程中产生的游离氧在被吸收在记录层侧之前被吸收在保护层侧上。

    Method of making magneto-optical recording medium
    6.
    发明授权
    Method of making magneto-optical recording medium 失效
    制作磁光记录介质的方法

    公开(公告)号：US4735698A

    公开(公告)日：1988-04-05

    申请号：US33840

    申请日：1987-04-03

    申请人： Masaaki Nomura ,  Takashi Yamada ,  Ryoichi Yamamoto ,  Akira Nahara

    发明人： Masaaki Nomura ,  Takashi Yamada ,  Ryoichi Yamamoto ,  Akira Nahara

    IPC分类号： G11B11/10 ,  C23C14/56 ,  G11B5/851 ,  G11B11/105 ,  B05D5/12 ,  C23C16/00 ,  G11B7/26

    CPC分类号： G11B5/851 ,  C23C14/568 ,  G11B11/10586

    摘要： A method of making a magneto-optical recording medium comprises the steps of moving a rotating substrate along a first dielectric target, at least one rare earth metal target, and a second dielectric target which are disposed in this order from an upstream side toward the downstream side in an in-line sputtering apparatus, and carrying out simultaneous sputtering on the substrate in the course of the movement of the substrate by use of the first dielectric target and the rare earth metal target. Thereafter, sputtering is carried out on the substrate by use of the rare earth metal target. Then, simultaneous sputtering is carried out on the substrate by use of the rare earth metal target and the second dielectric target.

    摘要翻译： 制造磁光记录介质的方法包括以下步骤：沿着第一电介质靶，至少一个稀土金属靶和第二介电靶移动旋转衬底，所述稀土金属靶和第二电介质靶从上游侧向下游 并且通过使用第一电介质靶和稀土金属靶在衬底的移动过程中在衬底上进行同时溅射。 此后，通过使用稀土金属靶在基板上进行溅射。 然后，通过使用稀土金属靶和第二电介质靶在衬底上进行同时溅射。

    Magneto-optical recording medium and method of making the same
    7.
    发明授权
    Magneto-optical recording medium and method of making the same 失效
    磁光记录介质及其制造方法

    公开(公告)号：US4808456A

    公开(公告)日：1989-02-28

    申请号：US102848

    申请日：1987-09-30

    申请人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

    发明人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

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

    CPC分类号： G11B11/10582 ,  Y10S428/90

    摘要： A magneto-optical recording medium comprises a substrate, a magneto-optical recording layer formed of a rare earth metal-transition metal alloy and a dielectric protective layer overlaid in this order on the substrate, and a rare earth metal layer overlaid on an edge face of the magneto-optical recording layer. The magneto-optical recording medium wherein the substrate is annular is made by forming the magneto-optical recording layer, covering the recording region on the magneto-optical recording layer with an annular mask having an outer diameter not larger than the outer diameter of the magneto-optical recording layer and/or an inner diameter not smaller than the inner diameter of the magneto-optical recording layer, overlaying the rare earth metal layer on an outer edge face and/or an inner edge face of the magneto-optical recording layer by dispersing rare earth metal particles toward the annular mask, removing the annular mask, and overlaying the dielectric protective layer on the magneto-optical recording layer.

    摘要翻译： 磁光记录介质包括基板，由稀土金属 - 过渡金属合金形成的磁光记录层和在基板上依次重叠的介电保护层和覆盖在边缘面上的稀土金属层 的磁光记录层。 其中基片是环形的磁光记录介质是通过形成磁光记录层制成的，用磁光记录层上的记录区用外径不大于磁光的外径的环形掩模 - 光学记录层和/或不小于磁光记录层的内径的内径，在磁光记录层的外边缘面和/或内边缘面上覆盖稀土金属层，通过 将稀土金属颗粒分散到环形掩模，去除环形掩模，并将介电保护层覆盖在磁光记录层上。

    Optical disk substrate
    8.
    发明授权
    Optical disk substrate 失效
    光盘基板

    公开(公告)号：US4802160A

    公开(公告)日：1989-01-31

    申请号：US104271

    申请日：1987-10-05

    申请人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

    发明人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

    IPC分类号： G11B7/24 ,  G11B7/26 ,  G11B7/00 ,  G11B25/04

    CPC分类号： G11B7/24 ,  G11B7/26

    摘要： An optical disk substrate has a surface on which a pre-groove for light beam tracking is formed. Non-pregrooved regions on the substrate surface on which the pregroove is formed are subjected to surface roughing processing to improve adhesion of the substrate surface in the non-pregrooved regions to a film which is to be overlaid on the optical disk substrate.

    摘要翻译： 光盘基板具有形成用于光束跟踪的预槽的表面。 在其上形成预制槽的基板表面上的非预浸渍区域进行表面粗化处理，以改善非预浸渍区域中的基板表面与要重叠在光盘基板上的膜的粘合性。

    Magneto-optical recording medium
    9.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：US4789606A

    公开(公告)日：1988-12-06

    申请号：US37884

    申请日：1987-04-13

    申请人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

    发明人： Takashi Yamada ,  Masaaki Nomura ,  Ryoichi Yamamoto ,  Akira Nahara

    IPC分类号： G11B5/64 ,  G11B11/105

    CPC分类号： G11B5/64 ,  G11B11/10586 ,  Y10S428/90 ,  Y10S428/928

    摘要： A magneto-optical recording medium comprises a transparent substrate, a magneto-optical recording layer formed on the transparent substrate and containing a rare earth metal-transition metal alloy, and a thin film containing at least either one of platinum and palladium and formed at least on one surface of the magneto-optical recording layer. Or, the magneto-optical recording medium comprises the transparent substrate, and a magneto-optical recording layer formed on the transparent substrate by alternately overlaying a plurality of thin layers containing a rare earth metal-transition metal alloy, and a plurality of thin layers containing at least either one of platinum and palladium.

    摘要翻译： 磁光记录介质包括透明基板，形成在透明基板上并含有稀土金属 - 过渡金属合金的磁光记录层，以及至少含有铂和钯中的至少一种的薄膜，至少形成 在磁光记录层的一个表面上。 或者，磁光记录介质包括透明基板和通过交替地叠加多个含有稀土金属 - 过渡金属合金的薄层而形成在透明基板上的磁光记录层，以及多个含有 铂和钯中的至少一种。