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1.发明授权
公开(公告)号：US5412627A
公开(公告)日：1995-05-02
申请号：US61538
申请日：1993-05-14
申请人： Katsutaro Ichihara , Sumio Ashida , Akira Kikitsu , Yumi Mizusawa
发明人： Katsutaro Ichihara , Sumio Ashida , Akira Kikitsu , Yumi Mizusawa
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10521 , G11B11/10586
摘要： Light beams having two different power levels are radiated on a magneto-optical medium having a recording layer and a bias layer magnetostatically coupled to the recording layer, thereby recording and erasing information. Upon radiation of a high level beam, a beam irradiated portion of the recording layer is heated to reach a magnetization reversal temperature, and the direction of magnetization of the irradiated portion follows a direction of a leakage field generated by a magnetization distribution formed by heating of the bias layer. Upon radiation of a low level beam, a beam irradiated portion of the recording layer is heated to reach a magnetization reversal temperature to cause the bias layer to generate a leakage field having a magnitude smaller than that upon radiation of the high level beam. In this case, the direction of magnetization of the recording layer is opposite to that of the leakage field obtained upon radiation of the high level beam. The directions of magnetization of the bias layer are kept unchanged before and after the radiation of the high level beam and before and after the radiation of the low level beam.
摘要翻译： 具有两个不同功率电平的光束被辐射在具有静磁耦合到记录层的记录层和偏置层的磁光介质上，从而记录和擦除信息。 在高电平光束的辐射下，记录层的光束照射部分被加热以达到磁化反转温度，并且照射部分的磁化方向遵循由通过加热形成的磁化分布产生的泄漏场的方向 偏置层。 在低电平光束的辐射下，记录层的光束照射部分被加热以达到磁化反转温度，以使偏置层产生的幅度小于高电平光束辐射时的泄漏场。 在这种情况下，记录层的磁化方向与在高电平光束的辐射时获得的泄漏场的方向相反。 在高电平光束的辐射之前和之后以及在低电平光束的辐射之前和之后，偏置层的磁化方向保持不变。
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公开(公告)号：US06296915B1
公开(公告)日：2001-10-02
申请号：US09419609
申请日：1999-10-18
申请人： Keiichiro Yusu , Sumio Ashida , Akira Kikitsu , Toshihiko Nagase , Katsutaro Ichihara , Naomasa Nakamura , Naoki Morishita , Katsumi Suzuki
发明人： Keiichiro Yusu , Sumio Ashida , Akira Kikitsu , Toshihiko Nagase , Katsutaro Ichihara , Naomasa Nakamura , Naoki Morishita , Katsumi Suzuki
IPC分类号： B32B300
CPC分类号： G11B7/24 , G11B7/00557 , G11B7/252 , G11B7/2534 , G11B7/2578 , G11B7/2585 , G11B7/2595 , G11B7/26 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25711 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： In a phase change optical recording medium, by determining heat conductivity relatively higher in one of interference layers on and under the recording layer, heat absorbed into the recording layer can be released moderately through an interference layer. Thereby, cross erasure caused by heating of adjacent tracks can be prevented, and at the same time, excessive heat radiation is prevented from a part of the recording layer nearer to the substrate to thereby maintain appropriate heat in the recording layer. As a result, cross-erasure is prevented, and data can be rewritten with the supply of typical recording/erasure power.
摘要翻译： 在相变光记录介质中，通过在记录层上和下方的干涉层之一中确定相对较高的热导率，可以通过干涉层适度释放吸收到记录层中的热量。 因此，可以防止由相邻轨道的加热引起的交叉擦除，并且同时，防止来自更靠近基板的记录层的一部分的过多的热辐射，从而在记录层中保持适当的热量。 结果，防止交叉擦除，并且可以通过提供典型的记录/擦除功率来重写数据。
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公开(公告)号：US06240060B1
公开(公告)日：2001-05-29
申请号：US09395573
申请日：1999-09-14
IPC分类号： G11B724
CPC分类号： G11B7/257 , G11B7/007 , G11B7/00718 , G11B7/00745 , G11B7/24 , G11B7/243 , G11B7/2542 , G11B7/2585 , G11B7/2595 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： A phase change recording medium comprises a substrate, an interference layer formed on the substrate and a recording layer formed on the interference layer. In this, the reflectance of the crystalline region in the recording layer is lower than that of amorphous region therein, and the interference layer comprises at least three layers of which the dielectric constant differs from that of the adjacent layers. With that constitution, the optical characteristics and the thermal characteristics of the medium are all optimized.
摘要翻译： 相变记录介质包括基板，形成在基板上的干涉层和形成在干涉层上的记录层。 在此，记录层中的结晶区域的反射率低于其中的非晶区域的反射率，并且干涉层包括介电常数与相邻层的介电常数不同的至少三层。 利用该结构，介质的光学特性和热特性都被优化。
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4.发明授权Optical recording medium, optical recording and/or reproducing method, and optical recording and/or reproducing system 失效光学记录介质，光学记录和/或再现方法以及光学记录和/或再现系统公开(公告)号：US06826144B1
公开(公告)日：2004-11-30
申请号：US09648475
申请日：2000-08-25
IPC分类号： G11B700
CPC分类号： G11B7/1263 , G11B7/0045 , G11B7/005 , G11B7/1267 , G11B7/24065 , G11B7/24067 , G11B7/243 , G11B7/246 , G11B2007/24304 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/2432 , G11B2007/24324
摘要： An optical recording medium comprises a superresolution film which has a light transmittance varying in accordance with the intensity of incident light and which has a superresolution function for optically masking part of incident light to form an optical aperture having a smaller size than a spot size of incident light, the superresolution film including at least two kinds of superresolution films having different response times until the superresolution function occurs after being irradiated with light. Thus, it is possible to easily and surely reduce the light spot size to greatly enhance the recording density. In addition, it is possible to extend the operating wavelength range by providing at least two kinds of superresolution films having different operating wavelengths causing the superresolution function.
摘要翻译： 光学记录介质包括具有根据入射光强度而变化的光透射率的超分辨膜，其具有用于光学地掩蔽部分入射光以形成具有比入射光斑大小更小的光学孔径的超分辨率功能 光，超分辨率膜包括至少两种具有不同响应时间的超分辨率膜，直到在用光照射之后发生超分辨函数。 因此，可以容易且可靠地减小光斑尺寸，大大提高记录密度。 此外，通过提供具有不同工作波长的至少两种超分辨率膜，可以延长工作波长范围，导致超分辨率功能。
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公开(公告)号：US06174597B1
公开(公告)日：2001-01-16
申请号：US08900581
申请日：1997-07-25
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/64 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/858 , G11B2005/0002 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording apparatus includes a magnetic recording medium including a substrate and a magnetic recording layer formed on the substrate and having a structure in which magnetic grains are dispersed in a nonmagnetic matrix, a means for recording magnetic information on the magnetic recording medium, and a means for reproducing magnetic information from the magnetic recording medium wherein the magnetic grains are separated from the substrate by a part of the matrix and form a substantially single layer parallel to the main surface of the substrate.
摘要翻译： 磁记录装置包括磁记录介质，其包括基板和磁记录层，该磁记录层形成在基板上，并且具有将磁性颗粒分散在非磁性矩阵中的结构，在磁记录介质上记录磁信息的装置， 用于从磁记录介质再现磁信息的装置，其中磁性颗粒通过基体的一部分与衬底分离，并形成平行于衬底主表面的基本单层。
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公开(公告)号：US07272107B2
公开(公告)日：2007-09-18
申请号：US10958403
申请日：2004-10-06
IPC分类号： G11B7/24
CPC分类号： G11B7/1263 , G11B7/0045 , G11B7/005 , G11B7/1267 , G11B7/24065 , G11B7/24067 , G11B7/243 , G11B7/246 , G11B2007/24304 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/2432 , G11B2007/24324
摘要： A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying electric power from the outside, and able to be changed automatically, provided with a machining tool for machining a workpiece, a motor for driving the machining tool, a generator for generating electric power to drive the motor by the rotation of the spindle, and a breaker for breaking a supply line of electric current from the generator to the motor when electric current over a predetermined value flows in the supply line.
摘要翻译： 可以与普通工具相同的方式安装在机床的主轴上的工具，能够不与外部电源等连接而被驱动，给出比机床的主轴更高的转速，而不需要供电 能够自动地更换，设置有用于加工工件的加工工具，用于驱动加工工具的马达，用于通过主轴的旋转产生电力来驱动马达的发电机，以及断路器 当电流超过预定值的电流在供应管线中时，将电流从发电机断开到电动机。
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7.发明授权
公开(公告)号：US6014296A
公开(公告)日：2000-01-11
申请号：US681409
申请日：1996-07-23
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3967 , G11B5/5526 , G11B5/743 , G11B5/82 , G11B2005/0002 , G11B2005/0018 , G11B2005/3996 , G11B5/40 , G11B5/59683
摘要： A magnetic disk including a substrate, a recording track section which is made of a magnetic member for recording and reproducing information magnetically and is provided on the substrate, and a guard band member which is provided between the recording track sections adjacent to each other so that they are substantially continued in a track direction and is harder than the magnetic member and is made of a non-magnetic material. Moreover, the magnetic member is not provided or magnetic members with a different thickness from the magnetic member forming the recording track section is provided on a lower area of the guard band member.
摘要翻译： 一种包括基板的磁盘，由用于磁性地记录和再现信息并设置在基板上的磁性部件制成的记录轨道部分，以及设置在彼此相邻的记录轨道部分之间的保护带部件，使得 它们在轨道方向上基本上继续并且比磁性构件更硬并且由非磁性材料制成。 另外，在保护带部件的下部区域不设置磁性部件，而是形成与形成记录轨道部分的磁性部件不同厚度的磁性部件。
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公开(公告)号：US5780135A
公开(公告)日：1998-07-14
申请号：US712434
申请日：1996-09-11
申请人： Akira Kikitsu , Katsutaro Ichihara
发明人： Akira Kikitsu , Katsutaro Ichihara
CPC分类号： G11B5/656 , G11B5/72 , Y10T428/265
摘要： A magnetic disc apparatus includes a magnetic recording medium and member for recording/reproducing information in/out of the magnetic recording medium, the magnetic recording medium including a recording layer of a magnetic thin film formed on a non-magnetic substrate, and a non-magnetic protective layer formed on and thicker than the recording layer. The particular construction permits diminishing the thickness of the recording layer, making it possible to achieve a high density recording.
摘要翻译： 磁盘装置包括磁记录介质和用于在磁记录介质中记录/再现信息的构件，该磁记录介质包括形成在非磁性基板上的磁性薄膜的记录层， 磁性保护层形成在记录层上并且比记录层更厚。 具体的结构允许减小记录层的厚度，使得可以实现高密度记录。
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9.发明授权Magnetic recording media having a magnetic thin film made of magnetic metals grains and nonmagnetic matrix 失效具有由磁性金属颗粒和非磁矩阵制成的磁性薄膜的磁记录介质
公开(公告)号：US5652054A
公开(公告)日：1997-07-29
申请号：US500365
申请日：1995-07-10
IPC分类号： G11B5/64
CPC分类号： G11B5/653 , G11B5/656 , Y10S428/90 , Y10T428/256
摘要： This invention provides a magnetic recording medium having a magnetic thin film made of magnetic metal grains and a nonmagnetic matrix, wherein the hardness of the nonmagnetic matrix is larger than that of the magnetic metal grains, the magnetic metal grains have shape magnetic anisotropy and magneto-crystalline anisotropy, and in the nonmagnetic matrix the content of a magnetic metal element in a central portion between the magnetic metal grains is 20 atomic % or less. This invention also provides a magnetic recording/reproduction apparatus including a magnetic recording medium consisting of a nonmagnetic matrix, which is continuously present in the direction of film thickness and the in-plane direction of a magnetic thin film, and magnetic metal grains held in the nonmagnetic matrix, and a magnetic head for reproducing a signal from the magnetic recording medium by using a resistance change caused by a magnetic field.
摘要翻译： 本发明提供一种具有由磁性金属颗粒和非磁性基体制成的磁性薄膜的磁记录介质，其中非磁性基体的硬度大于磁性金属颗粒的硬度，磁性金属颗粒具有磁各向异性和磁 - 晶体各向异性，在非磁性基体中，磁性金属颗粒之间的中心部分的磁性金属元素的含量为20原子％以下。 本发明还提供一种磁记录/再现装置，其包括磁性记录介质，该磁记录介质由薄膜厚度方向和磁性薄膜的面内方向连续存在的非磁性矩阵组成，并且磁性金属颗粒保持在 非磁性矩阵，以及用于通过使用由磁场引起的电阻变化来再现来自磁记录介质的信号的磁头。
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10.发明授权公开(公告)号：US06636460B2
公开(公告)日：2003-10-21
申请号：US09749808
申请日：2000-12-28
IPC分类号： G11B1100
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/127 , G11B5/314 , G11B5/6088 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021 , G11B2005/3996
摘要： In a thermally-assisted magnetic recorder configured to heat a medium with a heat source like a light beam and thereby decrease the coercive force of a recording portion so as to magnetically record information on the recording portion decreased in coercive force by applying a recording magnetic field from a recording magnetic pole thereto, relative timing between heating of the medium and magnetic recording is optimized by locating a reversing point of magnetization, in which the coercive force of the recording portion equals the intensity of the recording magnetic field, in the leading side of the trailing edge of the recording magnetic pole.
摘要翻译： 在热辅助磁记录器中，构造成加热具有像光束的热源的介质，从而降低记录部分的矫顽力，从而通过施加记录磁场来磁记录在矫顽力减小的记录部分上的信息 从记录磁极到介质的加热和磁记录之间的相对定时通过在磁记录的前方定位记录部分的矫顽力等于记录磁场的强度的磁化反转点而被优化 记录磁极的后缘。
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