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21. 发明授权

US5705286A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5705286A
公开(公告)日：1998-01-06
申请号：US163096
申请日：1993-12-07
申请人： Junji Hirokane , Yoshiteru Murakami , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junji Hirokane , Yoshiteru Murakami , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , Y10S428/90
摘要： A magneto-optical recording medium has an exchange-coupled triplilayer film wherein a readout layer which has in-plane magnetization at room temperature, and in which a transition occurs from in-plane magnetization to perpendicular magnetization when temperature thereof is raised above T.sub.1, an intermediate layer which has perpendicular magnetization at room temperature, the perpendicular magnetization being maintained from room temperature to Curie temperature T.sub.3, and a recording layer which has perpendicular magnetization at room temperature, the perpendicular magnetization been maintained from room temperature to Curie temperature T.sub.2 which are laminated in this order, and the temperatures T.sub.1, T.sub.2 and T.sub.3 satisfy the following inequality: T.sub.1
摘要翻译：磁光记录介质具有交换耦合三层膜，其中在室温下具有面内磁化的读出层，并且其温度升高到T1以上时从平面内磁化转变为垂直磁化的读出层，在室温下具有垂直磁化的中间层，垂直磁化维持在室温至居里温度T3，以及在室温下具有垂直磁化的记录层，垂直磁化维持在室温至居里温度T2之间，层压按照该顺序，温度T1，T2和T3满足以下不等式：T1

22. 发明授权

US4917751A Method of producing double sided optical memory disks 失效
标题翻译：双面光存储盘的制造方法
公开(公告)号：US4917751A
公开(公告)日：1990-04-17
申请号：US328743
申请日：1989-03-20
申请人： Kenji Ohta , Hiroyuki Katayama , Akira Takahashi , Yoshiteru Murakami , Junji Hirokane
发明人： Kenji Ohta , Hiroyuki Katayama , Akira Takahashi , Yoshiteru Murakami , Junji Hirokane
IPC分类号： B29C35/08 , B29C70/08 , G11B7/26 , G11B11/105
CPC分类号： G11B7/26 , B29C35/08 , B29C70/086 , B29C2035/0827 , B29L2017/005 , G11B11/10584 , Y10T156/1097 , Y10T156/1098
摘要： Double sided optical memory disks are produced by dropping a viscous adhesive material hardenable by ultraviolet radiation at predetermined longitudinal intervals onto an elongated cloth material of uniform thickness thereby causing the adhesive material to become absorbed by and contained in the cloth material, thereafter placing this cloth material sandwichedly between two optical disk pieces each containing a recording layer, thereafter applying pressure between these pieces such that the sandwiching pieces remain separated uniformly by a predetermined separation distance, and thereafter applying ultraviolet radiation to and thereby hardening the adhesive material while the disk pieces are maintained at the uniform separation distance.
摘要翻译：双面光学记忆盘是通过将能够以预定的纵向间隔使紫外线辐射固化的粘性粘合剂材料滴落到均匀厚度的细长布料上制成的，从而使粘合剂材料被布料吸收并包含在布料中，然后将该布料夹在两个光盘片之间，每个光盘片均包含记录层，然后在这些片之间施加压力，使得夹持片保持均匀分离预定的间隔距离，然后在保持盘片的同时施加紫外线辐射，从而硬化粘合剂材料在均匀分离距离。

23. 发明授权

US4717628A Magnetooptical storage element 失效
标题翻译：磁光存储元件
公开(公告)号：US4717628A
公开(公告)日：1988-01-05
申请号：US830862
申请日：1986-02-19
申请人： Akira Takahashi , Yoshiteru Murakami , Hiroyuki Katayama , Junji Hirokane , Kenji Ohta
发明人： Akira Takahashi , Yoshiteru Murakami , Hiroyuki Katayama , Junji Hirokane , Kenji Ohta
IPC分类号： G11B11/10 , G11B7/26 , G11B11/105 , G11C13/06 , G11B7/24
CPC分类号： G11B7/26 , G11B11/10589 , Y10S428/90 , Y10S428/928 , Y10T428/31678
摘要： A magnetooptical storage element having a recording layer of a multi-layer construction including a reflective layer. The reflective layer is made of an aluminium-nickel alloy obtained by adding nickel to aluminium such that the aluminium-nickel alloy contains approximately 2 to 10 atomic percent of nickel.
摘要翻译：具有包括反射层的多层结构的记录层的磁光存储元件。反射层由通过将镍添加到铝中而获得的铝 - 镍合金制成，使得铝 - 镍合金含有约2至10原子％的镍。

24. 发明授权

US5530685A Magneto-optical recording apparatus having paired devices for applying external magnetic fields 失效
标题翻译：具有用于施加外部磁场的配对装置的磁光记录装置
公开(公告)号：US5530685A
公开(公告)日：1996-06-25
申请号：US330744
申请日：1994-10-28
申请人： Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi , Kenji Ohta
发明人： Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10554 , G11B11/10521 , G11B11/10523 , G11B11/10552
摘要： A magneto-optical recording apparatus of the present invention is provided with an objective lens for focusing a light beam onto a magneto-optical recording medium. A pair of magnets is disposed on opposite sides of the magneto-optical recording medium and apply a writing magnetic field onto a portion of the magneto-optical recording medium that has been irradiated by the light beam while applying an initializing magnetic field greater than the writing magnetic field onto a portion apart from that irradiated by the light beam.
摘要翻译：本发明的磁光记录装置设置有用于将光束聚焦到磁光记录介质上的物镜。一对磁体设置在磁光记录介质的相对侧上，并将写入磁场施加到已经被光束照射的磁光记录介质的一部分上，同时施加大于写入的初始化磁场磁场到除了被光束照射的部分之外的部分。

25. 发明授权

US5428585A Magneto-optical recording medium comprising first, second and third magnetic layers and method of recording on same 失效
标题翻译：包括第一，第二和第三磁性层的磁光记录介质及其记录方法
公开(公告)号：US5428585A
公开(公告)日：1995-06-27
申请号：US102349
申请日：1993-08-05
申请人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Akira Takahashi , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10586 , G11B11/10515 , G11B11/10521
摘要： A magneto-optical recording medium has (1) a first magnetic layer made of a magnetic material which is changed into a vertical magnetization film in response to a temperature rise while is an in-plane magnetization film at a room temperature; (2) a second magnetic layer made of a vertical magnetization film; and (3) a third magnetic layer made of a vertical magnetic film having a higher Curie temperature than that of the second magnetic layer; and (4) a base substrate on which the first, second, and third magnetic layers are luminated in this order. With the arrangement, the optically modulated overwriting can be carried out with respect to the second magnetic layer and it is not necessary to complete the magnetization direction to one direction for each optically modulated overwriting. Moreover, it is possible to reproduce through the first magnetic layer the information which is recorded on a smaller portion than a light beam spot.
摘要翻译：磁光记录介质具有：（1）由磁性材料制成的第一磁性层，其响应于温度而变成垂直磁化膜，而在室温下为面内磁化膜; （2）由垂直磁化膜制成的第二磁性层; 和（3）由具有比第二磁性层的居里温度更高的居里温度的垂直磁性膜制成的第三磁性层; 和（4）基底基板，其上依次发光第一，第二和第三磁性层。通过该配置，可以相对于第二磁性层执行光调制重写，并且对于每个光调制重写，不需要向一个方向完成磁化方向。此外，可以通过第一磁性层再现记录在比光束点更小的部分上的信息。

26. 发明授权

US5683803A Magneto-optical recording medium and method of recording and reproducing using the same 失效
标题翻译：磁光记录介质及使用其的记录和再现方法
公开(公告)号：US5683803A
公开(公告)日：1997-11-04
申请号：US433088
申请日：1995-05-03
申请人： Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi , Kenji Ohta
发明人： Junichiro Nakayama , Michinobu Mieda , Junji Hirokane , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66 , B32B5/16
CPC分类号： G11B11/10586 , G11B11/10506 , G11B11/10515 , G11B11/10523 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium includes a first magnetic layer and a second magnetic layer being laminated. When information is to be recorded on the first magnetic layer, first, a magnetization direction in the second magnetic layer is arranged in one direction with an application of an initialization magnetic field. Then, an intensity modulated light beam is projected while applying thereto a recording magnetic field so as to change the magnetization direction in the second magnetic layer. Thereafter, the magnetization direction in the second magnetic layer is copied to the first magnetic layer, thereby recording information. The first magnetic layer has a magnetization in an intermediate direction between a perpendicular direction and an in-plane direction at room temperature, while has a perpendicular magnetization at above a predetermined temperature. Therefore, a smaller exchange coupling force is exerted from the first magnetic layer to the second magnetic layer at room temperature, thereby enabling a rewriting information with a smaller initialization magnetic field compared with the conventional method, thereby achieving a reduction in size of the apparatus and power conservation.
摘要翻译：磁光记录介质包括层叠的第一磁性层和第二磁性层。当要在第一磁性层上记录信息时，首先，通过施加初始化磁场，将第二磁性层中的磁化方向布置在一个方向上。然后，施加强度调制光束，同时向其施加记录磁场，以改变第二磁性层中的磁化方向。此后，将第二磁性层中的磁化方向复制到第一磁性层，从而记录信息。第一磁性层在室温下具有在垂直方向和面内方向之间的中间方向上的磁化强度，同时具有高于预定温度的垂直磁化强度。因此，与常规方法相比，在室温下从第一磁性层向第二磁性层施加较小的交换耦合力，从而能够实现与常规方法相比具有较小初始化磁场的重写信息，从而实现装置的尺寸减小省电。

27. 发明授权

US4695514A Magneto-optical memory element 失效
标题翻译：磁光存储元件
公开(公告)号：US4695514A
公开(公告)日：1987-09-22
申请号：US675850
申请日：1984-11-28
申请人： Akira Takahashi , Yoshiteru Murakami , Junji Hirokane , Hiroyuki Katayama , Kenji Ohta
发明人： Akira Takahashi , Yoshiteru Murakami , Junji Hirokane , Hiroyuki Katayama , Kenji Ohta
IPC分类号： H01F10/14 , G11B11/10 , G11B11/105 , G11C13/06 , H01F10/12 , H01F10/13 , G11B7/24
CPC分类号： G11B11/10591 , G11B11/10586 , Y10S428/90 , Y10T428/31678
摘要： A magneto-optical memory element includes a glass substrate and an amorphous Nd-Gd-Fe ternary alloy magnetic recording thin-film having an axis of easy magnetization perpendicular to its surface. The magneto-optical memory element shows a preferable coercive force, a high Kerr rotation angle in the reproduced laser beam, and the Curie temperature suited for a stable operation.
摘要翻译：磁光存储元件包括玻璃基板和具有垂直于其表面的易磁化轴的非晶Nd-Gd-Fe三元合金磁记录薄膜。磁光存储元件显示出优选的矫顽力，再现激光束中的高克尔旋转角以及适于稳定操作的居里温度。

28. 发明授权

US4610912A Magneto-optic memory element 失效
标题翻译：磁光存储元件
公开(公告)号：US4610912A
公开(公告)日：1986-09-09
申请号：US648741
申请日：1984-09-10
申请人： Akira Takahashi , Yoshiteru Murakami , Junji Hirokane , Hiroyuki Katayama , Kenji Ohta , Hideyoshi Yamaoka
发明人： Akira Takahashi , Yoshiteru Murakami , Junji Hirokane , Hiroyuki Katayama , Kenji Ohta , Hideyoshi Yamaoka
IPC分类号： G11B11/105 , H01F10/12 , H01F10/14 , G11B7/24
CPC分类号： G11B11/10593 , H01F10/126 , H01F10/14 , Y10S428/90 , Y10T428/2495 , Y10T428/24975
摘要： A magneto-optic memory element includes a transparent substrate, a first transparent nitride film, a GdTbFe recording layer, a second transparent nitride film, and a reflection film formed in this order. The first transparent nitride film has an index of refraction higher than that of the second transparent nitride film. In a preferred form, the first transparent nitride film is a SiN film having the index of refraction of about 2.0, and the second transparent nitride film is an AlN film having the index of refraction of about 1.8 to 1.9.
摘要翻译：磁光存储元件包括透明衬底，第一透明氮化物膜，GdTbFe记录层，第二透明氮化物膜和依次形成的反射膜。第一透明氮化物膜的折射率高于第二透明氮化物膜的折射率。在优选形式中，第一透明氮化物膜是折射率为约2.0的SiN膜，第二透明氮化物膜是折射率为约1.8至1.9的AlN膜。

29. 发明授权

US5644566A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5644566A
公开(公告)日：1997-07-01
申请号：US432683
申请日：1995-05-02
申请人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Junji Hirokane , Akira Takahashi , Kenji Ohta
发明人： Junichiro Nakayama , Michinobu Mieda , Hiroyuki Katayama , Junji Hirokane , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/105 , G11B7/00
CPC分类号： G11B11/10586 , G11B11/10517
摘要： An intermediate layer is formed between a memory layer and a writing layer. The intermediate layer shows in-plane magnetization at room temperature, and perpendicular magnetization within a temperature range within which the coercive force of the memory layer is lower than that of the writing layer. The Curie point of the intermediate layer is lower than that of the memory layer. Like a conventional method, light-intensity modulation overwriting is performed by irradiating laser light whose intensity has been modulated between high level and low level while applying a recording magnetic field after performing an initialization. Even when there are variations in the raised temperature by the irradiation of laser light of high level, it is possible to perform stable overwriting with light-intensity modulation by satisfactorily restraining the exchange forces between the intermediate layer and the writing layer from causing coupling.
摘要翻译：在存储层和写入层之间形成中间层。中间层在室温下显示出平面内的磁化强度，在存储层的矫顽力低于书写层的温度范围内的垂直磁化强度。中间层的居里点低于存储层的居里点。像传统方法一样，通过在执行初始化之后照射记录磁场的同时照射强度已经被调制在高电平和低电平之间的激光来执行光强调制重写。即使通过高水平的激光照射而升高的温度存在变化，也可以通过令人满意地抑制中间层与书写层之间的交换作用而进行光强调制来进行稳定的重写。

30. 发明授权

US5422865A Light modulation method for magneto-optical recording device 失效
标题翻译：磁光记录装置的光调制方法
公开(公告)号：US5422865A
公开(公告)日：1995-06-06
申请号：US163355
申请日：1993-12-07
申请人： Hiroyuki Katayama , Junji Hirokane , Junichiro Nakayama , Akira Takahashi , Kenji Ohta
发明人： Hiroyuki Katayama , Junji Hirokane , Junichiro Nakayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10506 , G11B11/10521
摘要： A magneto-optical recording method includes the steps of applying an external magnetic field perpendicularly onto the magnetic thin film with perpendicular magnetization of a magneto-optical recording medium and projecting a light beam onto the magneto-optical recording medium; and modulating the intensity of the light beam between the first light intensity and the second light intensity in response to the information to be recorded while shifting a spot of the light beam, thereby recording information. In the above method, the first light intensity is set such that by reducing the coercive force of the magnetic thin film with perpendicular magnetization, a magnetic domain is formed on the magnetic thin film with perpendicular magnetization, and that the magnetic domain is moved as the spot of the light beam is shifted. The second light intensity is set such that by increasing the coercive force of the magnetic thin film with perpendicular magnetization, the magnetic domain is fixed to the position.
摘要翻译：磁光记录方法包括以下步骤：利用磁光记录介质的垂直磁化将磁场垂直地施加到磁性薄膜上并将光束投射到磁光记录介质上; 以及响应于要移动光束的点而要记录的信息，调制第一光强度和第二光强度之间的光束的强度，从而记录信息。在上述方法中，第一光强度被设定为通过以垂直磁化强度降低磁性薄膜的矫顽力，在磁性薄膜上以垂直磁化形成磁畴，并且磁畴作为光束的光斑被移动。第二光强度被设定为通过以垂直磁化强度增加磁性薄膜的矫顽力，将磁畴固定在该位置上。

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