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    Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer
    2.
    发明授权
    Magneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layer 失效
    磁光记录介质具有比记录层中的记录位大的再现层的信号再现区域

    公开(公告)号：US5982715A

    公开(公告)日：1999-11-09

    申请号：US116328

    申请日：1998-07-15

    申请人： Go Mori ,  Naoyasu Iketani ,  Michinobu Mieda ,  Ippei Suzuki ,  Junji Hirokane ,  Akira Takahashi

    发明人： Go Mori ,  Naoyasu Iketani ,  Michinobu Mieda ,  Ippei Suzuki ,  Junji Hirokane ,  Akira Takahashi

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10584 ,  G11B11/10593 ,  G11B11/10515

    摘要： A magneto-optical recording medium with a reproducing layer that exhibits in-plane magnetization at room temperature and that comes to exhibit perpendicular magnetization as temperature rises. The second shielding layer is used to block the magnetization of record bits other than a record bit to be reproduced from being copied on a signal reproducing area in the reproducing layer. Consequently, even in the case of high-density record bits in the recording layer, only the magnetization of the record bit to be reproduced is copied on the reproducing layer. Therefore, the application of the magneto-optical recording medium makes it possible to produce superior reproducing signals even in the case where the records bits with high density are formed on the recording layer.

    摘要翻译： 一种具有再现层的磁光记录介质，其在室温下表现出平面内的磁化，并且随着温度升高而呈现垂直磁化强度。 第二屏蔽层用于阻止除被再现的记录位之外的记录位的磁化被复制在再现层中的信号再现区上。 因此，即使在记录层中的高密度记录位的情况下，只有将再现的记录位的磁化复制在再现层上。 因此，即使在记录层上形成具有高密度的记录位的情况下，也可以应用磁光记录介质来产生优良的再现信号。

    Method for forming micropatterns
    3.
    发明授权
    Method for forming micropatterns 失效
    形成微图案的方法

    公开(公告)号：US06872511B2

    公开(公告)日：2005-03-29

    申请号：US10076972

    申请日：2002-02-15

    申请人： Junji Hirokane ,  Michinobu Mieda ,  Go Mori

    发明人： Junji Hirokane ,  Michinobu Mieda ,  Go Mori

    IPC分类号： G03C5/00 ,  G03F7/00 ,  G11B7/26

    CPC分类号： G11B7/261 ,  G11B7/263 ,  Y10S430/146

    摘要： A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

    摘要翻译： 用于形成微图案的方法包括在基板上形成由单层或多层构成的薄膜，向薄膜照射能量束以将区域的温度升高到预定温度或更高，从而改变 并且至少以这样的方式使薄膜图案化以离开改质区域。

    Optical disk having virtually constant width recording track and optical disk apparatus
    4.
    发明授权
    Optical disk having virtually constant width recording track and optical disk apparatus 失效
    具有实际上恒定宽度的记录轨道和光盘装置的光盘

    公开(公告)号：US06122233A

    公开(公告)日：2000-09-19

    申请号：US15011

    申请日：1998-01-28

    申请人： Naoyasu Iketani ,  Go Mori ,  Michinobu Mieda ,  Yoshiteru Murakami ,  Junji Hirokane ,  Akira Takahashi

    发明人： Naoyasu Iketani ,  Go Mori ,  Michinobu Mieda ,  Yoshiteru Murakami ,  Junji Hirokane ,  Akira Takahashi

    IPC分类号： G11B7/24 ,  G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B11/105 ,  G11B7/09

    CPC分类号： G11B7/00745 ,  G11B11/10563 ,  G11B11/10565 ,  G11B7/00718

    摘要： In an optical disk, grooves and lands serving as recording tracks are provided, the grooves are shaped so as to have virtually the same width, and in a first region, the two side walls of each groove wind in accordance with address information. The first region of the groove is formed with its leading portion located at the same angular position as the leading portion of at least one of the first regions of the adjacent grooves. Moreover, the winding portions corresponding to respective bits of the address information are formed in a manner so as to synchronize to the adjacent grooves. With this arrangement, it becomes possible to easily detect address information from the grooves and lands, and consequently to obtain an information reproducing signal with high quality.

    摘要翻译： 在光盘中，设置有用作记录轨迹的凹槽和凹槽，这些凹槽成形为具有实质上相同的宽度，并且在第一区域中，每个凹槽的两个侧壁根据地址信息而变风。 凹槽的第一区域形成有其前端部分位于与相邻凹槽的第一区域中的至少一个的前端部分相同的角位置。 此外，与地址信息的各个位对应的绕组部分以与相邻槽同步的方式形成。 利用这种布置，可以容易地从凹槽和平台检测地址信息，从而获得高质量的信息再现信号。

    Method for forming micropatterns
    5.
    发明授权
    Method for forming micropatterns 有权
    形成微图案的方法

    公开(公告)号：US07223505B2

    公开(公告)日：2007-05-29

    申请号：US11054244

    申请日：2005-02-08

    申请人： Junji Hirokane ,  Michinobu Mieda ,  Go Mori

    发明人： Junji Hirokane ,  Michinobu Mieda ,  Go Mori

    IPC分类号： G03C5/00 ,  G01D9/00

    CPC分类号： G11B7/261 ,  G11B7/263 ,  Y10S430/146

    摘要： A method for forming micropatterns includes forming a thin film consisting of a single layer or of plural layers on a substrate, irradiating an energy beam to the thin film to elevate the temperature of a region to a predetermined temperature or higher to thereby modify the region of the thin film, and patterning the thin film at least in such a manner to leave over the modified region.

    摘要翻译： 用于形成微图案的方法包括在基板上形成由单层或多层构成的薄膜，向薄膜照射能量束以将区域的温度升高到预定温度或更高，从而改变 并且至少以这样的方式使薄膜图案化以离开改质区域。

    Magneto-optical recording medium having intermediate layer of in plane magnetization
    6.
    发明授权
    Magneto-optical recording medium having intermediate layer of in plane magnetization 有权
    具有平面磁化中间层的磁光记录介质

    公开(公告)号：US06272077B1

    公开(公告)日：2001-08-07

    申请号：US09479256

    申请日：2000-01-07

    申请人： Akira Takahashi ,  Michinobu Mieda ,  Naoyasu Iketani ,  Go Mori ,  Junsaku Nakajima ,  Yoshiteru Murakami ,  Junji Hirokane

    发明人： Akira Takahashi ,  Michinobu Mieda ,  Naoyasu Iketani ,  Go Mori ,  Junsaku Nakajima ,  Yoshiteru Murakami ,  Junji Hirokane

    IPC分类号： G11B1110

    CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586 ,  G11B11/10593

    摘要： A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light beam; a recording layer, which is magnetostatically coupled to the reproducing layer; and an in-plane magnetized layer, provided adjacent to the recording layer, which has a Curie temperature at the above-mentioned predetermined temperature. In this medium, at temperatures below the predetermined temperature, signals recorded at high density in the recording layer are masked, and the above-mentioned magnetostatic coupling is suppressed, by magnetic masking by the in-plane magnetized layer. At temperatures above the predetermined temperature, however, within a domain forming part of the in-plane magnetized layer, the recording layer and the reproducing layer are magnetostatically coupled, and a recording bit of the recording layer is copied and expanded to a magnetic domain in the reproducing layer. Accordingly, with this medium, by reproducing from an expanded magnetic domain of the reproducing layer, even information from recording bits recorded at high density can be reproduced with high signal quality.

    摘要翻译： 根据本发明的磁光存储介质包括再现层，其在室温下具有面内磁化并且通过再现光束被加热到高于预定温度时的垂直磁化; 记录层，其被静磁耦合到再现层; 以及与记录层相邻的面内磁化层，居里温度在上述预定温度。 在该介质中，在低于预定温度的温度下，记录层中以高密度记录的信号被屏蔽，并且通过面内磁化层的磁屏蔽来抑制上述静磁耦合。 然而，在高于预定温度的温度下，在形成面内磁化层的一部分的区域内，磁静电耦合记录层和再现层，并且将记录层的记录位复制并扩展到磁畴中 再现层。 因此，利用该介质，通过从再现层的扩展磁畴再现，可以以高信号质量再现以高密度记录的记录位的信息。

    Magneto-optical recording medium having intermediate layer of in-plane magnetization
    7.
    发明授权
    Magneto-optical recording medium having intermediate layer of in-plane magnetization 失效
    具有平面内磁化中间层的磁光记录介质

    公开(公告)号：US06147939A

    公开(公告)日：2000-11-14

    申请号：US32985

    申请日：1998-03-02

    申请人： Akira Takahashi ,  Michinobu Mieda ,  Naoyasu Iketani ,  Go Mori ,  Junsaku Nakajima ,  Yoshiteru Murakami ,  Junji Hirokane

    发明人： Akira Takahashi ,  Michinobu Mieda ,  Naoyasu Iketani ,  Go Mori ,  Junsaku Nakajima ,  Yoshiteru Murakami ,  Junji Hirokane

    IPC分类号： G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586 ,  G11B11/10593

    摘要： A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light beam; a recording layer, which is magnetostatically coupled to the reproducing layer; and an in-plane magnetized layer, provided adjacent to the recording layer, which has a Curie temperature at the above-mentioned predetermined temperature. In this medium, at temperatures below the predetermined temperature, signals recorded at high density in the recording layer are masked, and the above-mentioned magnetostatic coupling is suppressed, by magnetic masking by the in-plane magnetized layer. At temperatures above the predetermined temperature, however, within a domain forming part of the in-plane magnetized layer, the recording layer and the reproducing layer are magnetostatically coupled, and a recording bit of the recording layer is copied and expanded to a magnetic domain in the reproducing layer. Accordingly, with this medium, by reproducing from an expanded magnetic domain of the reproducing layer, even information from recording bits recorded at high density can be reproduced with high signal quality.

    摘要翻译： 根据本发明的磁光存储介质包括再现层，其在室温下具有面内磁化并且通过再现光束被加热到高于预定温度时的垂直磁化; 记录层，其被静磁耦合到再现层; 以及与记录层相邻的面内磁化层，居里温度在上述预定温度。 在该介质中，在低于预定温度的温度下，记录层中以高密度记录的信号被屏蔽，并且通过面内磁化层的磁屏蔽来抑制上述静磁耦合。 然而，在高于预定温度的温度下，在形成面内磁化层的一部分的区域内，磁静电耦合记录层和再现层，并且将记录层的记录位复制并扩展到磁畴中 再现层。 因此，利用该介质，通过从再现层的扩展磁畴再现，可以以高信号质量再现以高密度记录的记录位的信息。

    Optical disk and optical disk recording and reproducing device
    8.
    发明授权
    Optical disk and optical disk recording and reproducing device 失效
    光盘和光盘记录和再现装置

    公开(公告)号：US07859983B2

    公开(公告)日：2010-12-28

    申请号：US10890916

    申请日：2004-07-13

    申请人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    发明人： Junji Hirokane ,  Michinobu Mieda ,  Masanori Shimo

    IPC分类号： G11B7/00

    CPC分类号： G11B7/24038 ,  G11B7/263

    摘要： An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets are laminated by adhesive layers in such a manner that between adjacent two disk sheets, a back surface of one of the disk sheets, on the opposite side of the surface where the recording face is formed, faces the disk surface of the other disk sheet. The foregoing structure realizes an optical disk of desirable recording/reproducing characteristics, which is flat and has a fixed interval between recording faces, and which permits the problems of coma aberration, spherical aberration, etc., to be suppressed.

    摘要翻译： 光盘包括层叠的多个盘片，并且每个盘片在其一个表面上具有记录面和平坦的后表面，其中所述多个盘片以粘合层层压，使得在相邻 在形成有记录面的表面的相对侧上的一个盘片的背面的两个盘片面对另一盘片的盘表面。 上述结构实现了平坦的并且在记录面之间具有固定间隔的期望的记录/再现特性的光盘，并且允许抑制彗差，球面像差等问题。

    Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization
    9.
    发明授权
    Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization 失效
    具有在面内磁化和垂直磁化之间的磁化可变的磁光记录介质

    公开(公告)号：US5629908A

    公开(公告)日：1997-05-13

    申请号：US536168

    申请日：1995-09-29

    申请人： Junji Hirokane ,  Junichiro Nakayama ,  Michinobu Mieda ,  Akira Takahashi

    发明人： Junji Hirokane ,  Junichiro Nakayama ,  Michinobu Mieda ,  Akira Takahashi

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B11/00

    CPC分类号： G11B11/10586 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595

    摘要： A magneto-optical recording medium comprising a readout layer, an intermediate layer, and a recording layer. Two light beams having high and low light intensities respectively are applied while applying an external magnetic field. The magnetization direction of the recording layer is changed according to information, by reversing the sub-lattice magnetic moment of the readout layer in the case of the high light intensity. The intermediate layer exhibits a perpendicular magnetization during the irradiation, and also exhibits an in-plane magnetization at room temperature. Since it is not necessary to provide a device for generating a magnetic field for initializing every recording, it is possible to avoid increase in the size of the recording and reproducing apparatus. Moreover, the magnetization direction of the readout layer can be easily controlled with an external magnetic field, and the optical modulation overwriting property can be stabilized.

    摘要翻译： 包括读出层，中间层和记录层的磁光记录介质。 在施加外部磁场的同时施加具有高和低光强度的两个光束。 在高光强度的情况下，通过反转读出层的亚晶格磁矩，根据信息改变记录层的磁化方向。 中间层在照射期间表现出垂直磁化，并且在室温下也表现出平面内的磁化强度。 由于不需要提供用于产生用于初始化每个记录的磁场的装置，因此可以避免记录和再现装置的尺寸的增加。 此外，可以通过外部磁场容易地控制读出层的磁化方向，并且可以稳定光学调制重写特性。