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    Magneto-optical recording medium and method of manufacturing same
    2.
    发明授权
    Magneto-optical recording medium and method of manufacturing same 失效
    磁光记录介质及其制造方法

    公开(公告)号：US5518826A

    公开(公告)日：1996-05-21

    申请号：US79356

    申请日：1993-06-21

    申请人： Yoshihiko Kudoh ,  Motoyoshi Murakami ,  Hidetsugu Kawabata

    发明人： Yoshihiko Kudoh ,  Motoyoshi Murakami ,  Hidetsugu Kawabata

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

    CPC分类号： G11B11/10591 ,  G11B11/10584 ,  Y10S428/90

    摘要： A magneto-optical recording medium operable with a low external magnetic field intensity during recording and erasing and attenuating a variation in the external magnetic field intensity comprises a magneto-optical recording layer and protective and reflective layer provided adjacent to the magneto-optical recording layers, each of which has a size of microstructures (which are associated with the non-uniformity in composition, density, crystallizability, and the like and visible under a transmission electron microscope) less than the width of a magnetic domain wall in the magneto-optical recording layer.

    摘要翻译： 在记录和擦除期间以低的外部磁场强度可操作的磁光记录介质和衰减外部磁场强度的变化包括磁光记录层和邻近磁光记录层设置的保护和反射层， 每个微结构具有小于磁光记录中的磁畴壁的宽度的微结构尺寸（其与透射电子显微镜下的组成，密度，结晶性等的不均匀性和可见性）相关联） 层。

    Magneto-optical recording medium
    3.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：US5565278A

    公开(公告)日：1996-10-15

    申请号：US129578

    申请日：1993-09-30

    申请人： Masahiro Birukawa ,  Motoyoshi Murakami ,  Hidetsugu Kawabata

    发明人： Masahiro Birukawa ,  Motoyoshi Murakami ,  Hidetsugu Kawabata

    IPC分类号： G11B11/10 ,  G11B7/257 ,  G11B11/105 ,  G11B5/66

    CPC分类号： G11B7/2578 ,  G11B11/10586 ,  G11B2007/24306 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B7/252 ,  G11B7/2585 ,  Y10S428/90 ,  Y10T428/265

    摘要： A magneto-optical recording medium includes a magneto-optical layer, a reflection layer and an inorganic dielectric layer interposed therebetween. The dielectric layer is extremely thin so that it will exhibit almost no optical effect, thereby allowing a high CN ratio to be obtained. Thermal conductivity of the dielectric layer is so low that the magneto-optical and reflection layers are thermally isolated from each other. That is, if refractive index of the dielectric layer is n, thickness of the dielectric layer is T (nm), and the thermal conductivity of the dielectric layer is C (J (m sec K).sup.-1), then the thickness T is set within a range that satisfies the following equation:5n-4.ltoreq.T.ltoreq.(12n-4)(C/2.1).sup.-0.4where C.ltoreq.4J (m sec K).sup.-1.

    摘要翻译： 磁光记录介质包括磁光层，反射层和介于其间的无机介电层。 电介质层非常薄，因此几乎不发挥光学效果，能够得到高的CN比。 电介质层的导热性很低，使得磁光和反射层彼此热隔离。 也就是说，如果电介质层的折射率为n，则电介质层的厚度为T（nm），电介质层的导热率为C（J（m sec K）-1），则厚度T为 设定在满足以下等式的范围内：5n-4

    Optical disk substrate with land planes of uniform height
    6.
    发明授权
    Optical disk substrate with land planes of uniform height 失效
    光盘基板，平面高度均匀

    公开(公告)号：US5582891A

    公开(公告)日：1996-12-10

    申请号：US76848

    申请日：1993-06-15

    申请人： Motoyoshi Murakami ,  Masahiro Birukawa ,  Yoshihiko Kudoh

    发明人： Motoyoshi Murakami ,  Masahiro Birukawa ,  Yoshihiko Kudoh

    IPC分类号： B29C33/38 ,  B29C59/02 ,  B29L17/00 ,  G11B7/007 ,  G11B7/26 ,  G11B23/00 ,  B32B3/00

    CPC分类号： G11B7/263 ,  G11B7/00745 ,  G11B23/0057 ,  Y10S425/81 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

    摘要： A method of making a stamper uses a photoresist disk cut by the application of a laser beam on the land planes thereof, or a stamper which is different in depth between the land plane on the internal peripheral side with respect to the prepit portion and the land plane on the external peripheral side. A method of making an optical disk substrate includes the steps of using a stamper, and molding a transparent plastic material with an injection molding method. A stamper capable of sufficiently transferring the prepits and guide grooves on the optical disk substrate with the correction of right and left inequality of the prepits, and the method of making it, and a superior optical disk substrate and a method of making it can be realized.

    摘要翻译： 制造压模的方法使用通过在其平面上施加激光束切割的光致抗蚀剂盘，或者在内周侧上的平面平面之间相对于预凹坑部分和焊盘之间的深度不同的压模 平面。 制造光盘基板的方法包括以下步骤：使用压模，并用注射成型方法模制透明塑料材料。 能够通过校正预凹坑的左右不等式来充分地转印光盘基板上的预凹坑和引导槽的压模及其制造方法，以及优异的光盘基板及其制造方法 。

    Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same
    7.
    发明授权
    Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same 失效
    用于畴壁位移检测系统的磁光记录介质及其制造方法

    公开(公告)号：US06975564B2

    公开(公告)日：2005-12-13

    申请号：US10699937

    申请日：2003-11-03

    申请人： Kiyoshi Uchida ,  Yasumori Hino ,  Motoyoshi Murakami ,  Norio Miyatake

    发明人： Kiyoshi Uchida ,  Yasumori Hino ,  Motoyoshi Murakami ,  Norio Miyatake

    IPC分类号： B32B3/02 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10582 ,  B32B3/02 ,  G11B11/10578 ,  G11B11/10584 ,  G11B11/10586 ,  Y10T428/31

    摘要： An optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first dielectric layer disposed between the substrate and the recording layer and a second dielectric layer disposed on the recording layer opposite to the substrate, wherein the recording layer is initialized with light having a wavelength λ incident from the second dielectric layer side, and the thickness of the second dielectric layer is in a range of λ/(12×n) to λ/(2×n) (where n is a refractive index of the second dielectric layer).

    摘要翻译： 本发明的光盘包括基板和设置在基板上方的记录层，并且使用从基板侧入射的光由DWDD系统再现信息信号。 光盘还包括设置在基板和记录层之间的第一介质层和设置在与基板相对的记录层上的第二介电层，其中记录层由具有从第二介电层入射的波长λ的光初始化 并且第二电介质层的厚度在λ/（12xn）至λ/（2xn）（其中n是第二介电层的折射率）的范围内。