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1.发明授权公开(公告)号：US06830824B2
公开(公告)日：2004-12-14
申请号：US09878384
申请日：2001-06-12
申请人： Akira Kikitsu , Junichi Akiyama , Katsutaro Ichihara , Tadashi Kai , Toshihiko Nagase , Tomoyuki Maeda
发明人： Akira Kikitsu , Junichi Akiyama , Katsutaro Ichihara , Tadashi Kai , Toshihiko Nagase , Tomoyuki Maeda
IPC分类号： G11B11105
CPC分类号： G11B5/00 , G11B5/66 , G11B2005/0002 , G11B2005/0021 , Y10T428/12861 , Y10T428/12875 , Y10T428/12986 , Y10T428/265
摘要： A magnetic recording medium has a substrate, a base layer formed on the substrate and including a magnetic material, a switching layer formed on the base layer and including a nonmagnetic material, and a recording layer formed on the switching layer and having a structure comprising magnetic particles and a nonmagnetic wall buried between the magnetic particles. The medium meets the condition of TcB>Tsw, where TcB is a Curie temperature of the base layer, and Tsw is a temperature at which the recording layer and the base layer begin to exert exchange coupling interaction.
摘要翻译： 磁记录介质具有基板，形成在基板上的基层，包括磁性材料，形成在基层上的包含非磁性材料的开关层以及形成在开关层上的具有包括磁性的结构的记录层 颗粒和埋在磁性颗粒之间的非磁性壁。 介质满足TcB> Tsw的条件，其中TcB是基层的居里温度，Tsw是记录层和基层开始发生交换耦合相互作用的温度。
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2.发明授权公开(公告)号：US07372648B2
公开(公告)日：2008-05-13
申请号：US10920182
申请日：2004-08-18
IPC分类号： G11B11/00
CPC分类号： G11B5/4826 , G11B5/127 , G11B5/3103 , G11B5/3967 , G11B5/4833 , G11B7/00 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A pair of members opposed to each other via a gap are commonly used as an evanescent light probe and a writing magnetic head. When the spacing and width of the gap are smaller than the wavelength λ of injected light, highly intensive evanescent light is generated from the gap position of the opposite surface. Magnetic writing is carried out by applying a recording magnetic field from the pair of members to a medium heated by the evanescent light.
摘要翻译： 经由间隙彼此相对的一对构件通常用作渐逝光探针和写入磁头。 当间隙的间隔和宽度小于注入的光的波长λ时，从相对表面的间隙位置产生高度强烈的消逝光。 通过将记录磁场从一对构件施加到由渐逝光加热的介质来进行磁写入。
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3.发明授权Magnetic recording medium and magnetic recording/reproducing apparatus using the same 失效磁记录介质及使用其的磁记录/再现装置公开(公告)号：US06972923B2
公开(公告)日：2005-12-06
申请号：US10396514
申请日：2003-03-26
申请人： Junichi Akiyama , Akira Kikitsu , Tadashi Kai , Toshihiko Nagase , Tomoyuki Maeda , Hisanori Aikawa
发明人： Junichi Akiyama , Akira Kikitsu , Tadashi Kai , Toshihiko Nagase , Tomoyuki Maeda , Hisanori Aikawa
CPC分类号： G11B5/66 , G11B5/59633 , G11B5/59683 , G11B5/667 , G11B5/74 , G11B5/82 , G11B2005/0029
摘要： A magnetic recording medium has a substrate, and a servo signal recording magnetic layer whose magnetization is oriented in a direction perpendicular to a surface thereof, a non-magnetic layer and a data recording magnetic layer, which are stacked on the substrate in the order mentioned. The servo signal recording magnetic layer has a coercivity higher than that of the data recording magnetic layer. The servo signal recording magnetic layer has servo tracks formed with a track pitch Tps, the servo tracks adjacent to each other in a track width direction being magnetized to opposite directions perpendicular to the film surface.
摘要翻译： 磁记录介质具有基板，磁化沿与其表面垂直的方向取向的伺服信号记录磁性层，非磁性层和数据记录磁性层，按照所述顺序堆叠在基板上 。 伺服信号记录磁性层的矫顽力高于数据记录磁性层的矫顽力。 伺服信号记录磁性层具有形成有磁道间距Tps的伺服磁道，在磁道宽度方向上彼此相邻的伺服磁道被磁化成垂直于膜表面的相反方向。
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4.发明申请公开(公告)号：US20050018547A1
公开(公告)日：2005-01-27
申请号：US10920182
申请日：2004-08-18
IPC分类号： G11B11/10 , G11B5/00 , G11B5/02 , G11B5/127 , G11B5/31 , G11B5/39 , G11B7/00 , G11B13/04 , G11B11/00
CPC分类号： G11B5/4826 , G11B5/127 , G11B5/3103 , G11B5/3967 , G11B5/4833 , G11B7/00 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A pair of members opposed to each other via a gap are commonly used as an evanescent light probe and a writing magnetic head. When the spacing and width of the gap are smaller than the wavelength λ of injected light, highly intensive evanescent light is generated from the gap position of the opposite surface. Magnetic writing is carried out by applying a recording magnetic field from the pair of members to a medium heated by the evanescent light.
摘要翻译： 经由间隙彼此相对的一对构件通常用作渐逝光探针和写入磁头。 当间隙的间隔和宽度小于注入的光的波长λ时，从相对表面的间隙位置产生高度强烈的消逝光。 通过将记录磁场从一对构件施加到由渐逝光加热的介质来进行磁写入。
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公开(公告)号：US20050036225A1
公开(公告)日：2005-02-17
申请号：US10944882
申请日：2004-09-21
IPC分类号： G11B5/65 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/127 , G11B5/64 , G11B5/66 , G11B5/73 , G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B5/7325 , G11B5/00 , G11B5/012 , G11B5/127 , G11B5/64 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.
摘要翻译： 磁记录再现装置具有具有非磁性基板的磁记录介质和形成在非磁性基板上的功能层和记录层，记录层呈现磁各向异性能量密度KuRL，功能层在照射光时显现出铁磁性 以便表现出低于磁各向异性能量密度KuRL的磁各向异性能量密度KuFL以及当功能层被光照射时通过与记录层的交换耦合相互作用来降低记录层的磁各向异性能量密度的功能层 ，用光照射功能层的光源，以及具有通过向记录层施加磁场而具有写入信号磁化的写入头的磁头以及读取记录在记录层中的信号磁化的读取头。
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公开(公告)号：US07054087B2
公开(公告)日：2006-05-30
申请号：US10944882
申请日：2004-09-21
CPC分类号： G11B5/7325 , G11B5/00 , G11B5/012 , G11B5/127 , G11B5/64 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.
摘要翻译： 磁记录再现装置具有磁记录介质，其具有非磁性基板，以及在非磁性基板上形成的功能层和记录层，所述记录层呈现磁各向异性能量密度Ku <！ - SIPO
的功能层，而功能层用于降低 当功能层被光照射时通过与记录层的交换耦合相互作用的记录层的磁各向异性能量密度，用光照射功能层的光源以及具有写入头写入信号磁化的磁头通过施加 记录层的磁场和读取记录在记录层中的信号磁化的读取头。 -
7.发明授权公开(公告)号：US06795380B2
公开(公告)日：2004-09-21
申请号：US10108503
申请日：2002-03-29
IPC分类号： G11B1100
CPC分类号： G11B5/4826 , G11B5/127 , G11B5/3103 , G11B5/3967 , G11B5/4833 , G11B7/00 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A pair of members opposed to each other via a gap are commonly used as an evanescent light probe and a writing magnetic head. When the spacing and width of the gap are smaller than the wavelength &lgr; of injected light, highly intensive evanescent light is generated from the gap position of the opposite surface. Magnetic writing is carried out by applying a recording magnetic field from the pair of members to a medium heated by the evanescent light.
摘要翻译： 经由间隙彼此相对的一对构件通常用作渐逝光探针和写入磁头。 当间隙的间隔和宽度小于注入的光的波长λ时，从相对表面的间隙位置产生高度强烈的消逝光。 通过将记录磁场从一对构件施加到由渐逝光加热的介质来进行磁写入。
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公开(公告)号：US06930847B2
公开(公告)日：2005-08-16
申请号：US10236931
申请日：2002-09-09
IPC分类号： G11B5/65 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/127 , G11B5/64 , G11B5/66 , G11B5/73 , G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B5/7325 , G11B5/00 , G11B5/012 , G11B5/127 , G11B5/64 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording-reproducing apparatus has a magnetic recording medium having a nonmagnetic substrate, and a functional layer and a recording layer formed on the nonmagnetic substrate, the recording layer exhibiting a magnetic anisotropy energy density KuRL, the functional layer developing ferromagnetism upon irradiation with light so as to exhibit a magnetic anisotropy energy density KuFL lower than the magnetic anisotropy energy density KuRL and the functional layer serving to lower the magnetic anisotropy energy density of the recording layer through exchange coupling interaction with the recording layer when the functional layer is irradiated with light, a light source which irradiates the functional layer with light, and a magnetic head having a writing head writing signal magnetization by applying a magnetic field to the recording layer and a reading head reading the signal magnetization recorded in the recording layer.
摘要翻译： 磁记录再现装置具有磁记录介质，其具有非磁性基板，以及在非磁性基板上形成的功能层和记录层，所述记录层呈现磁各向异性能量密度Ku <！ - SIPO
的功能层，而功能层用于降低 当功能层被光照射时通过与记录层的交换耦合相互作用的记录层的磁各向异性能量密度，用光照射功能层的光源以及具有写入头写入信号磁化的磁头通过施加 记录层的磁场和读取记录在记录层中的信号磁化的读取头。 -
9.发明授权Magnetic recording medium with L10 crystal grains including three or more elements 有权具有L10晶粒的磁记录介质包括三个或更多个元件公开(公告)号：US06777078B2
公开(公告)日：2004-08-17
申请号：US10050118
申请日：2002-01-18
IPC分类号： G11B565
摘要： A magnetic recording medium has a substrate, an underlayer formed on the substrate, a magnetic layer formed on the underlayer and including crystal grains having an L10 structure mainly including Fe and Pt, mainly including Fe and Pd, or mainly including Co and Pt, and the crystal grains further including 0.1 to 50 atomic percent of at least one additive element dissolved therein.
摘要翻译： 磁记录介质具有衬底，在衬底上形成的底层，形成在底层上的磁性层，并且包括主要包含Fe和Pt或主要包括Co和Pt的具有主要包括Fe和Pt的L10结构的晶粒，以及 晶粒还包含溶解在其中的至少一种添加元素的0.1至50原子％。
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10.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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