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1. 发明授权

US06521357B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06521357B1
公开(公告)日：2003-02-18
申请号：US09612896
申请日：2000-07-10
申请人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
IPC分类号： G11B11105
CPC分类号： G11B11/10591 , G11B11/10523 , G11B11/10584 , Y10T428/1143 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/24942 , Y10T428/265
摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force; and a controlling magnetic film, provided between the recording magnetic film and the readout magnetic film, for controlling the exchange-coupling force. The controlling magnetic film has in-plane magnetic anisotropy at room temperature.
摘要翻译：公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 用于光学读出信息的读出磁膜，读出磁膜能够通过交换耦合力与记录磁性膜磁耦合; 以及设置在记录磁性膜和读出磁性膜之间的用于控制交换耦合力的控制磁性膜。控制磁性膜在室温下具有面内磁各向异性。

2. 发明授权

US5391431A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5391431A
公开(公告)日：1995-02-21
申请号：US24317
申请日：1993-03-01
申请人： Yoshihiko Kudoh , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Masahiro Birukawa
IPC分类号： G11B11/10 , G11B11/105 , B32B5/16 , G11B5/66
CPC分类号： G11B11/10586 , Y10S428/90 , Y10T428/12465 , Y10T428/12632 , Y10T428/12771 , Y10T428/265
摘要： A magneto-optical recording medium comprises a base film having a certain crystal plane oriented in parallel to a substrate and a recording film formed on the base film. The recording film is composed of plural pairs of Mn alloy group magnetic thin film layer having a C-axis-oriented crystalline magnetic anisotropy and a nonmagnetic thin film layer having an interatomic spacing approximate to that of the base film, alternately laminated each other, so that the Mn alloy group magnetic film having a C-axis-oriented crystalline magnetic anisotropy is epitaxially grown on the substrate at a low temperature through the base film with high thermal stability and great magneto-optical effect.
摘要翻译：磁光记录介质包括具有与基板平行取向的某个晶面的基膜和形成在基膜上的记录膜。记录膜由具有C轴取向结晶磁各向异性的多对Mn合金组磁性薄膜层和具有接近于基膜的原子间距的非磁性薄膜层交替层叠而成，因此具有C轴取向的结晶磁各向异性的Mn合金组磁性膜在低温下通过具有高热稳定性和大的磁光效应的基膜在衬底上外延生长。

3. 发明授权

US06811889B2 Magneto-optical recording medium having a GDFECO readout magnetic film 失效
标题翻译：具有GDFECO读出磁性膜的磁光记录介质
公开(公告)号：US06811889B2
公开(公告)日：2004-11-02
申请号：US10121780
申请日：2002-04-12
申请人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
IPC分类号： G11B11105
CPC分类号： G11B11/10591 , G11B11/10523 , G11B11/10584 , Y10T428/1143 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/24942 , Y10T428/265
摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; and a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force. The composition of the readout magnetic film may be chosen such that the exchange coupling force from the recording magnetic film does not affect the magnetization around the surface of the readout magnetic film on the side on which the readout light is incident.
摘要翻译：公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 以及用于光学地读取信息的读出磁性膜，读出的磁性膜能够通过交换耦合力与记录磁性膜磁耦合。可以选择读出磁性膜的组成，使得来自记录磁性膜的交换耦合力不影响在读出光入射侧的读出磁性膜的表面周围的磁化。

4. 发明授权

US5582891A Optical disk substrate with land planes of uniform height 失效
标题翻译：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。

5. 发明授权

US06399227B1 Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US06399227B1
公开(公告)日：2002-06-04
申请号：US08160976
申请日：1993-11-30
申请人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
发明人： Yoshihiko Kudoh , Yasumori Hino , Yuuichi Fukamachi , Masahiro Birukawa
IPC分类号： B32B1518
CPC分类号： G11B11/10591 , G11B11/10523 , G11B11/10584 , Y10T428/1143 , Y10T428/12646 , Y10T428/12861 , Y10T428/12931 , Y10T428/24942 , Y10T428/265
摘要： A magneto-optical recording medium including a recording layer for recording information and a substrate for supporting the recording layer is disclosed. The recording layer includes: a recording magnetic film for recording the information, the recording magnetic film being formed of a perpendicular magnetic anisotropy film; a readout magnetic film for optically reading out the information, the readout magnetic film being capable of being magnetically coupled with the recording magnetic film by an exchange-coupling force; and a controlling magnetic film, provided between the recording magnetic film and the readout magnetic film, for controlling the exchange-coupling force. The controlling magnetic film has in-plane magnetic anisotropy at room temperature, thereby suppressing the exchange-coupling force between the recording magnetic film and the readout magnetic film, and when the temperature of the controlling magnetic film reaches a predetermined temperature by a readout light irradiation, the controlling magnetic film stops the suppression of the exchange-coupling force, whereby the information recorded in the recording magnetic film is magnetically transferred to the readout magnetic film.
摘要翻译：公开了包括用于记录信息的记录层和用于支撑记录层的基板的磁光记录介质。记录层包括：用于记录信息的记录磁性膜，记录磁性膜由垂直磁各向异性膜形成; 用于光学读出信息的读出磁膜，读出磁膜能够通过交换耦合力与记录磁性膜磁耦合; 以及设置在记录磁性膜和读出磁性膜之间的用于控制交换耦合力的控制磁性膜。控制磁性膜在室温下具有面内的磁各向异性，从而抑制记录磁性膜与读出的磁性膜之间的交换耦合力，并且当控制磁性膜的温度通过读出光照射达到预定温度时控制磁膜阻止了交换耦合力的抑制，由此记录在记录磁膜中的信息被磁性地传送到读出的磁性膜。

6. 发明授权

US5821004A Magneto-optical recording medium and recording and reading out process using the same 失效
标题翻译：磁光记录介质和使用其的记录和读出过程
公开(公告)号：US5821004A
公开(公告)日：1998-10-13
申请号：US983128
申请日：1992-11-30
申请人： Yasumori Hino , Yoshihiko Kudoh , Masahiro Birukawa , Norio Miyatake
发明人： Yasumori Hino , Yoshihiko Kudoh , Masahiro Birukawa , Norio Miyatake
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10593 , G11B11/10584 , Y10S428/90
摘要： A magneto-optical recording medium having a recording layer which has a first magnetic film, a second magnetic film and a third magnetic film in this order from a laser beam incident side, in which the second magnetic film has a perpendicular anisotropy in a temperature range from room temperature to a Curie temperature, the first magnetic film has an in-plane anisotropy when there is no temperature increase by the irradiation of a laser beam or a perpendicular anisotropy when the temperature is raised by the irradiation of the laser beam, and an exchange coupled force is present between the first magnetic film and the second magnetic film.
摘要翻译：一种具有记录层的磁光记录介质，其具有从激光束入射侧开始依次具有第一磁性膜，第二磁性膜和第三磁性膜，其中第二磁性膜在温度范围内具有垂直各向异性从室温到居里温度时，当通过激光束的照射升高温度时，通过激光束的照射或垂直各向异性不存在温度升高时，第一磁性膜具有面内各向异性，并且交换耦合力存在于第一磁性膜和第二磁性膜之间。

7. 发明授权

US5724338A Rewritable disk-shaped optical recording medium 失效
标题翻译：可重写盘形光学记录介质
公开(公告)号：US5724338A
公开(公告)日：1998-03-03
申请号：US712804
申请日：1996-09-13
申请人： Masahiro Birukawa , Norio Miyatake , Yuuichi Fukamachi , Yoshihiko Kudoh , Yasumori Hino
发明人： Masahiro Birukawa , Norio Miyatake , Yuuichi Fukamachi , Yoshihiko Kudoh , Yasumori Hino
IPC分类号： G11B11/10 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B20/12 , G11B27/19 , G11B27/30
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10563 , G11B11/10578 , G11B20/1217 , G11B27/19 , G11B27/3027 , G11B7/00718 , G11B7/00745 , G11B7/261
摘要： A magneto-optical recording medium includes at least a reading layer and a writing layer on a substrate. A track guide groove is formed in the medium so as to include in-groove portions and on-land portions. Only a portion where a temperature has been raised by optical beam irradiation is read, while a domain of a writing layer is copied on the writing layer, whereby a writing/reading operation can be effected with narrower track pitches. By this arrangement, there can be realized a narrow track pitch which is narrower than the diameter of a laser beam.
摘要翻译：磁光记录介质至少包括读取层和衬底上的书写层。在介质中形成轨道导向槽，以便包括槽内部分和陆上部分。只读取通过光束照射而升高了温度的部分，同时在写入层上复制写入层的区域，从而能够以更窄的轨道间距进行写入/读取操作。通过这种布置，可以实现比激光束的直径窄的窄轨道间距。

8. 发明授权

US5993937A Magneto-optic recording medium and method of fabricating the same 失效
标题翻译：磁光记录介质及其制造方法
公开(公告)号：US5993937A
公开(公告)日：1999-11-30
申请号：US348203
申请日：1994-11-28
申请人： Masahiro Birukawa , Yoshihiko Kudoh
发明人： Masahiro Birukawa , Yoshihiko Kudoh
IPC分类号： G11B11/105 , G11B11/00
CPC分类号： G11B11/10586 , G11B11/10584 , G11B11/10515 , Y10S428/90 , Y10T428/24355 , Y10T428/24942
摘要： A read-only disk and a write-only disk recorded at high density having a magneto-optical film differing in coercive force depending on the information to be recorded disposed on a substrate. In the read-only and write-once disks, signals can be read employing only part of the irradiation beam, and thus super-resolution reading is realized.
摘要翻译：根据待记录的信息设置在基板上，以高密度记录的只读磁盘和只写磁盘具有矫顽力不同的磁光膜。在只读和一次写入磁盘中，只能使用部分照射光束读取信号，从而实现超分辨率读取。

9. 发明授权

US5679386A Optical disk formation member for making an optical disk substrate 失效
标题翻译：用于制造光盘基片的光盘形成件
公开(公告)号：US5679386A
公开(公告)日：1997-10-21
申请号：US429481
申请日：1995-04-25
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 , B29D11/00
CPC分类号： G11B7/263 , G11B7/00745 , G11B23/0057 , Y10S425/81 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： An optical disk formation member has a center and an outer periphery. A tracking guide groove formation portion and a prepit formation portion are provided on the member. A first land plane on an internal peripheral side of the prepit formation has a depth that is different from a second land plane on the external peripheral side of the prepit formation portion. The second land plane, furthermore, is deeper than the first land plane on the internal peripheral side of the prepit formation portion.
摘要翻译：光盘形成构件具有中心和外周。跟踪引导槽形成部分和预凹坑形成部分设置在该部件上。预置坑形成部的内周侧的第一平坦面的深度与预制坑形成部的外周侧的第二平台面不同。此外，第二平面平面比预制凹坑形成部分的内周侧上的第一平面平面更深。

10. 发明授权

US6146740A Magnetic recording medium and method of fabricating the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US6146740A
公开(公告)日：2000-11-14
申请号：US271340
申请日：1999-03-18
申请人： Masahiro Birukawa , Yoshihiko Kudoh
发明人： Masahiro Birukawa , Yoshihiko Kudoh
IPC分类号： G11B5/00 , G11B5/74 , G11B11/105 , G11B5/66
CPC分类号： G11B5/74 , G11B11/10504 , G11B11/10515 , G11B11/10582 , G11B11/10584 , G11B11/10586 , G11B11/10523 , G11B2005/0002 , G11B2005/0029 , Y10S428/90 , Y10T428/24355
摘要： A read-only disk and a write-only disk recorded at high density having a magneto-optical film differing in coercive force depending on the information to be recorded disposed on a substrate. In the read-only and write-once disks, signals can be read employing only part of the irradiation beam, and thus super-resolution reading is realized.
摘要翻译：根据待记录的信息设置在基板上，以高密度记录的只读磁盘和只写磁盘具有矫顽力不同的磁光膜。在只读和一次写入磁盘中，只能使用部分照射光束读取信号，从而实现超分辨率读取。

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