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1. 发明授权

US06767697B2 Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength 失效
标题翻译：磁光盘及其制造方法，通过用具有预定波长的激光进行初始化
公开(公告)号：US06767697B2
公开(公告)日：2004-07-27
申请号：US10038189
申请日：2001-10-24
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： G11B11105
CPC分类号： G11B11/10582 , B32B3/02 , G11B11/10578 , G11B11/10584 , G11B11/10586 , Y10T428/31
摘要： A magneto-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 &lgr; incident from the second dielectric layer side, and the thickness of the second dielectric layer is in a range of &lgr;/(12×n) to &lgr;/(2×n) (where n is a refractive index of the second dielectric layer).
摘要翻译：本发明的磁光盘包括衬底和设置在衬底上方的记录层，并且使用从衬底侧入射的光由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。

2. 发明授权

US06492035B1 Magneto-optical recording medium with intermediate layer having a controlled saturation magnetization 有权
标题翻译：具有中等层的具有受控饱和磁化强度的磁光记录介质
公开(公告)号：US06492035B1
公开(公告)日：2002-12-10
申请号：US09530497
申请日：2000-05-01
申请人： Atsushi Yamaguchi , Naoyuki Takagi , Kenichiro Mitani , Hitoshi Noguchi
发明人： Atsushi Yamaguchi , Naoyuki Takagi , Kenichiro Mitani , Hitoshi Noguchi
IPC分类号： G11B11105
CPC分类号： G11B11/10586 , G11B11/10515 , G11B11/10584 , Y10T428/12465 , Y10T428/12861 , Y10T428/24942
摘要： A magneto-optical recording medium of magnetic domain enlarging/reproducing system including a recording layer and a reproducing layer, a gate layer selectively extracting each magnetic domain within the recording layer is formed on the recording layer, a magnetic field reinforcement layer reinforcing a leakage magnetic field reaching the reproducing layer is formed on the gate layer, and a blocking layer blocking an exchange coupling force from the magnetic field reinforcement layer to the reproducing layer is formed on the magnetic field reinforcement layer.
摘要翻译：一种包括记录层和再现层的磁畴扩大/再现系统的磁光记录介质，在记录层上形成选择性地提取记录层内的每个磁畴的栅极层，加强漏磁在栅极层上形成到达再现层的场，并且在磁场强化层上形成阻挡从磁场强化层到再生层的交换耦合力的阻挡层。

3. 发明授权

US06802073B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06802073B1
公开(公告)日：2004-10-05
申请号：US09762440
申请日：2003-04-29
申请人： Koyata Takahashi , Toshio Inase , Keiichiro Nishizawa
发明人： Koyata Takahashi , Toshio Inase , Keiichiro Nishizawa
IPC分类号： G11B11105
CPC分类号： G11B11/10584
摘要： Disclosed are magneto-optical recording media including at least a reflection layer, a recording layer and a dielectric layer laminated on a substrate in this order, wherein the thickness of the dielectric layer is not less than 140 nm or wherein the dielectric layer is provided by the lamination of upper dielectric layer and lower dielectric layer in which the thermal conductivity of the upper dielectric layer is higher than that of the lower dielectric layer. By arranging the thickness of the dielectric layer in a specific range, the surface roughness of a media in not more than 1.5 nm, and providing a reflection layer composed of a noble metal alloy, achieved is a magneto-optical recording medium able to record constantly in near-field magneto-optical recording, suitable for narrow track pitch, and having excellent SNR, resolution, and recording sensitivity.
摘要翻译：公开了依次包括至少层叠在基板上的反射层，记录层和电介质层的磁光记录介质，其中介电层的厚度不小于140nm，或者介电层由上介电层和下电介质层的叠层，其中上电介质层的导热率高于下电介质层的导热率。通过将介电层的厚度设置在特定范围内，介质的表面粗糙度不大于1.5nm，并且提供由贵金属合金构成的反射层，是能够恒定记录的磁光记录介质在近场磁光记录中，适用于窄轨道间距，并且具有优异的SNR，分辨率和记录灵敏度。

4. 发明授权

US06623828B1 Optical disk employing integral substrate, and method for manufacturing the same 失效
标题翻译：采用整体式基板的光盘及其制造方法
公开(公告)号：US06623828B1
公开(公告)日：2003-09-23
申请号：US09690830
申请日：2000-10-18
申请人： Myong-do Ro
发明人： Myong-do Ro
IPC分类号： G11B11105
CPC分类号： G11B11/10584 , G11B7/26
摘要： An optical disk, which comprises: a common integral substrate having grooves and/or pits formed on its both sides: and a film structure on at least one side of the integral substrate. They are manufactured by preparing two stampers; simultaneously forming grooves and pits on both sides of an integral substrate by use of said two stampers mounted on a respective fixed mold and moving mold; and forming the film structure on at least one side of said integral substrate by depositing material from targets suspended to both sides of said integral substrate. The disks are superior in mechanical properties and reliability. As for reliability, the present optical disk is prepared without using a bonding process, which overcomes the problem of adhesive out-flow. The presence of only one integral substrate brings about an increased data storage density, twice as much per substrate, while contributing to the lightness of disk and accompanied by various effects including reduction in access time, saving of the bonding process and time in the spin coating, and cost reduction.
摘要翻译：一种光盘，包括：具有在其两侧形成的凹槽和/或凹坑的公共整体衬底;以及在所述整体衬底的至少一侧上的膜结构。它们是通过准备两个压模制造的; 通过使用安装在相应的固定模具和移动模具上的所述两个冲压机同时在整体基板的两侧上形成凹槽和凹坑; 以及通过从悬挂在所述整体基板的两侧的靶的沉积材料在所述一体基板的至少一侧上形成所述膜结构。这些圆盘的机械性能和可靠性都优越。对于可靠性，在不使用粘合工艺的情况下制备本光盘，其克服了粘合剂流出的问题。只有一个整体衬底的存在导致增加的数据存储密度，每个衬底的两倍，同时有助于光盘的亮度，并伴随着各种效果，包括减少访问时间，节省粘合过程和旋涂时间，并降低成本。

5. 发明授权

US06572957B1 Magneto-optical recording medium with four layered recording layer having specific relative magnetic anisotropy values 失效
标题翻译：具有具有特定相对磁各向异性值的四层记录层的磁光记录介质
公开(公告)号：US06572957B1
公开(公告)日：2003-06-03
申请号：US09601092
申请日：2001-03-23
申请人： Katsuhisa Aratani
发明人： Katsuhisa Aratani
IPC分类号： G11B11105
CPC分类号： G11B11/10593 , G11B11/10515 , Y10T428/24942
摘要： A magneto-optical recording medium incorporates a recording layer constituted by a multi-layered magnetic film composed of at least three magnetic layers. Domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light are moved toward the center of the spot in a forward portion in a direction, in which the reproducing light spot is moved, so that a recording magnetic domain is enlarged, and movement of the domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light is inhibited in a rear portion in the direction in which the reproducing light spot is moved. To inhibit movement of the domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light, insertion of a magnetic layer having a predetermined magnetic characteristic into a space between a displacement layer and a switch layer is required.
摘要翻译：磁光记录介质包括由至少三个磁性层构成的多层磁性膜构成的记录层。与再现光照射的部分相邻的磁性层的畴壁沿着再现光点移动的方向向前部向点的中心移动，使得记录磁畴扩大，并且移动在与再现光照射的部分相邻的磁性层的畴壁的后部，在再现光点移动的方向上被抑制。为了抑制与再现光照射的部分相邻的磁性层的畴壁的移动，需要将具有预定磁特性的磁性层插入到位移层和开关层之间的空间中。

6. 发明授权

US06830824B2 Magnetic recording medium with multiple magnetic layers capable of being exchange coupled at elevated temperatures and magnetic recording apparatus 有权
标题翻译：具有能够在高温下交换耦合的多个磁性层的磁记录介质和磁记录装置
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。

7. 发明授权

US06759137B1 Opto-magnetic recording medium with a garnet ferrite recording layer, and opto-magnetic information recording/reproducing device 有权
标题翻译：具有石榴石铁氧体记录层的光磁记录介质和光磁信息记录/再现装置
公开(公告)号：US06759137B1
公开(公告)日：2004-07-06
申请号：US09529919
申请日：2000-04-21
申请人： Akinori Furuya , Hiroshi Yoshikawa , Takaya Tanabe , Manabu Yamamoto , Toshifumi Ohkubo , Laurence Bouet , Philippe Tailhades , Corine Despax , Abel Rousset
发明人： Akinori Furuya , Hiroshi Yoshikawa , Takaya Tanabe , Manabu Yamamoto , Toshifumi Ohkubo , Laurence Bouet , Philippe Tailhades , Corine Despax , Abel Rousset
IPC分类号： G11B11105
CPC分类号： G11B7/1275 , G11B11/10532 , G11B11/10536 , G11B11/10543 , G11B11/10582 , G11B11/10584 , G11B11/10586 , Y10T428/12465 , Y10T428/12646 , Y10T428/12667 , Y10T428/12931 , Y10T428/24479 , Y10T428/2457 , Y10T428/24967 , Y10T428/263 , Y10T428/31
摘要： This invention relates to magneto-optical recording media such as magneto-optical disks and cards, manufacturing methods of the medium and a magneto-optical recording and playback device to record and play back data using the magneto-optical recording media. The magneto-optical recording medium of the present invention has a recording layer and a reflective layer on a substrate, and the recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. The manufacturing method of the present invention comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer. In the magneto-optical recording and playback device to record and play back data of the present invention, the wavelength of light for recording data is different from that for reading data, which is preferable for a magneto-optical recording medium comprising a garnet ferrite layer.
摘要翻译：本发明涉及诸如磁光盘和卡片的磁光记录介质，介质的制造方法以及使用磁光记录介质记录和重放数据的磁光记录和重放装置。本发明的磁光记录介质在基板上具有记录层和反射层，并且记录层具有层状结构，其中至少一个尖晶石铁氧体（或金红石型氧化物或赤铁矿）层至少一个石榴石铁氧体层堆叠在一起。优选地，分层结构形成在记录数据的轨道上。本发明的制造方法包括在形成记录层之后在500-700℃，优选600-630℃的范围内进行热处理的步骤。在用于记录和再现本发明的数据的磁光记录和重放装置中，用于记录数据的光的波长与用于读取数据的光的波长不同，这对于包括石榴石铁氧体层的磁光记录介质是优选的。

8. 发明授权

US06638597B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06638597B1
公开(公告)日：2003-10-28
申请号：US09697473
申请日：2000-10-26
申请人： Masataka Shinoda , Yasuhito Tanaka , Takashi Shimouma
发明人： Masataka Shinoda , Yasuhito Tanaka , Takashi Shimouma
IPC分类号： G11B11105
CPC分类号： G11B11/10582 , G11B11/10515 , G11B11/10584 , Y10T428/24355 , Y10T428/24942 , Y10T428/31
摘要： In order to improve reproduction characteristics of a magneto-optical recording medium in a case of being subject to a magnetically induced super resolution readout process utilizing a blue-violet laser beam, there is provided a magneto-optical recording medium having a surface roughness of 0.3 nm or less on a surface of a substrate on which recording/reproduction magnetic layers are formed or a surface of a dielectric film formed on the substrate.
摘要翻译：为了提高使用蓝紫色激光束的磁感应超分辨率读出处理的情况下提高磁光记录介质的再现特性，提供了表面粗糙度为0.3的磁光记录介质在形成有记录/再现磁性层的基板的表面上或者在基板上形成的电介质膜的表面上。

9. 发明授权

US06534162B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06534162B1
公开(公告)日：2003-03-18
申请号：US09606201
申请日：2000-06-29
申请人： Junji Hirokane , Noboru Iwata
发明人： Junji Hirokane , Noboru Iwata
IPC分类号： G11B11105
CPC分类号： G11B11/10515 , G11B11/10593 , Y10T428/24942
摘要： A magneto-optical recording medium includes at least: a reproducing magnetic layer composed at least of Gd and Co showing an in-plane magnetization state at room temperature and a transition to a perpendicular magnetization state at temperatures of not lower than a critical temperature; and a recording magnetic layer formed of a perpendicular magnetization film, the reproducing magnetic layer and the recording magnetic layer being magneto-statically coupled at least in the vicinity of the critical temperature, the reproducing magnetic layer containing at least either Tb or Dy so as to increase the total magnetization at a temperature at which a perpendicular magnetic anisotropy constant and a diamagnetic field energy are equal to each other.
摘要翻译：磁光记录介质至少包括：至少包含Gd和Co的再现磁性层，其在室温下表现出平面内的磁化状态，并且在不低于临界温度的温度下转变为垂直磁化状态; 以及由垂直磁化膜形成的记录磁性层，再现磁性层和至少在临界温度附近磁记录磁性层磁记录磁性层，至少含有Tb或Dy的再现磁性层以至在垂直磁各向异性常数和反磁场能量彼此相等的温度下增加总磁化强度。

10. 发明授权

US06808823B2 Magneto-optical recording medium and manufacturing method therefor 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US06808823B2
公开(公告)日：2004-10-26
申请号：US09880347
申请日：2001-06-13
申请人： Tetsuo Hosokawa , Shin-ichiro Matsuo
发明人： Tetsuo Hosokawa , Shin-ichiro Matsuo
IPC分类号： G11B11105
CPC分类号： G11B11/10593 , G11B11/10582 , G11B11/10584 , G11B11/10591 , Y10T428/12646 , Y10T428/12931 , Y10T428/12986 , Y10T428/265
摘要： A magneto-optical recording medium including a magnetic recording layer for recording information and a magnetic reproducing layer provided on the magnetic recording layer for reading information. The magnetic reproducing layer is separated into a first reproducing layer having a first composition and a second reproducing layer having a second composition slightly different from the first composition. The first and second reproducing layers have the same principal components. By changing a ratio in film thickness between the first and second reproducing layers, variations in composition of the first and second reproducing layers can be corrected.
摘要翻译：包括用于记录信息的磁记录层和设置在磁记录层上用于读取信息的磁再现层的磁光记录介质。磁性再现层被分离成具有第一组成的第一再现层和具有与第一组成稍微不同的第二组成的第二再现层。第一和第二再现层具有相同的主要成分。通过改变第一和第二再现层之间的膜厚度的比率，可以校正第一和第二再现层的组成变化。

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