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11. 发明授权

US5077714A Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam 失效
标题翻译：使用磁场和光束的强度调制的磁光记录和再现装置
公开(公告)号：US5077714A
公开(公告)日：1991-12-31
申请号：US340771
申请日：1989-04-20
申请人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
发明人： Hiroyuki Katayama , Kenji Ohta , Junichiro Nakayama , Tomoyuki Miyake , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/1051 , G11B11/10515 , G11B11/10521 , G11B11/10528
摘要： A magneto-optical recording and reproducing device for recording and reproducing data determined by negative magnetized areas in a magneto-optical recording medium. The device including a laser beam output level control means for controlling the intensity of a laser beam when recording data on the medium. The device prevents the causes of false signals and incorrect detection influenced by residual negative magnetized domains by increasing laser beam intensity when rewriting positive magnetized areas to erase residual negative magnetized areas.

12. 发明授权

US5193082A Optical/magnetic composite head having magnetic and optical heads in one integrated unit 失效
标题翻译：在一个集成单元中具有磁性和光学头的光学/磁性复合头
公开(公告)号：US5193082A
公开(公告)日：1993-03-09
申请号：US502104
申请日：1990-03-29
申请人： Tomoyuki Miyake , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Tomoyuki Miyake , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B5/02 , G11B5/127 , G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1353 , G11B11/10532 , G11B11/10536 , G11B11/10554 , G11B7/124 , G11B11/1058 , G11B2007/13722
摘要： A photomagnetic composite head comprising a magnetic head and an optical head that are integrated into one unit, an optical waveguide path of the optical head being located in the surface of the magnetic head that faces a recording medium, and a laser beam that passes through the optical waveguide path being irradiated on a point on the recording medium where a magnetic field is impressed from the magnetic head, whereby recording can be performed under a condition in which the coercivity of the recording medium has been lowered by the laser beam, thus making it possible to achieve high density recording by using a recording medium with a high coercivity.

13. 发明授权

US5386400A Magneto-optical head device having a lubricated member 失效
标题翻译：具有润滑部件的磁光头装置
公开(公告)号：US5386400A
公开(公告)日：1995-01-31
申请号：US183259
申请日：1994-01-19
申请人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B5/40 , G11B5/60 , G11B11/105 , G11B23/50 , G11B33/14 , G11B13/04
CPC分类号： G11B5/6005 , G11B11/1058 , G11B23/505 , G11B33/148 , G11B5/6082 , G11B5/40 , G11B5/6011
摘要： A magneto-optical recording device has a flying head that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on both sides of the bottom surface of the head slider, since the magneto-optical disk comes into contact with the head smoothly, the reliability and the durability of the magneto-optical recording device can improve.
摘要翻译：磁光记录装置具有根据磁光盘的旋转而浮动在磁光盘上的飞头。飞头包括头滑块。将固体润滑剂施加到面向磁光盘的磁头滑块的底表面上。由于固体润滑剂使飞头与磁光盘平滑地接触，所以磁光盘和飞头的划伤和磨损减小。因此，可以提高磁光记录装置的可靠性和耐久性。可以形成其中包含氟碳油的物理突起和凹陷或孔，而不是固体润滑剂。在这种情况下，飞头和磁光盘之间的接触面积也小于没有形成物理突起和凹陷的情况。此外，由于磁头与磁头滑块底面的两侧形成具有优异的润滑性的氟碳树脂制成的薄膜层，所以由于磁光盘顺利地与磁头接触，所以，可以提高磁光记录装置的可靠性和耐久性。

14. 发明授权

US5082690A Process for manufacturing a magneto-optic disc 失效
标题翻译：制造磁光盘的方法
公开(公告)号：US5082690A
公开(公告)日：1992-01-21
申请号：US523756
申请日：1990-05-15
申请人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Yoshiteru Murakami , Kenji Ohta
发明人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Yoshiteru Murakami , Kenji Ohta
IPC分类号： G11B11/10 , F26B13/10 , G11B11/105
CPC分类号： F26B13/103 , G11B11/10584
摘要： The present invention provides a process for manufacturing a magneto-optic disc comprising at least a transparent substrate, a magneto-optic recording film, and a protecting film made of resin for protecting the magneto-optic recording film, comprising the steps of forming the magneto-optic recording film over the entire one side surface of the transparent substrate; providing in a portion adjacent to the peripheral edge of the magneto-optic recording film an annular groove extending in depth through the magneto-optic recording film to the transparent substrate; and forming the protecting film over the surfaces of the magneto-optic recording film and the annular groove.

15. 发明授权

US5554436A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5554436A
公开(公告)日：1996-09-10
申请号：US341310
申请日：1994-11-16
申请人： Hiroyuki Katayama , Junichiro Nakayama , Naoyasu Iketani , Kenji Ohta
发明人： Hiroyuki Katayama , Junichiro Nakayama , Naoyasu Iketani , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10586 , Y10S428/90 , Y10S430/146 , Y10T428/12632 , Y10T428/12861 , Y10T428/12986 , Y10T428/24942 , Y10T428/31678
摘要： A magneto-optical recording medium is composed of first through fourth magnetic layers laminated in this order in such a way that an exchange coupling exists between any adjacent layers of the first through fourth magnetic layers so that a magnetization direction can be copied, wherein the first magnetic layer is a memory layer, the second magnetic layer is a writing layer, the third magnetic layer is a switching layer, and the fourth magnetic layer is an initializing layer. Further, respective Curie temperatures Tci satisfy an inequation Tc.sub.3
摘要翻译：磁光记录介质由依次层叠的第一至第四磁性层组成，使得在第一至第四磁性层的任何相邻层之间存在交换耦合，使得可以复制磁化方向，其中第一磁性层是存储层，第二磁性层是写入层，第三磁性层是开关层，第四磁性层是初始化层。此外，各居里温度Tci满足不等式Tc3

16. 发明授权

US5425008A Magneto-optical memory device whereon overwriting operation can be carried out through light intensity modulation and method for recording and erasing using it 失效
标题翻译：可以通过光强度调制和使用它进行记录和擦除的方法进行重写操作的磁光存储器件
公开(公告)号：US5425008A
公开(公告)日：1995-06-13
申请号：US965358
申请日：1992-10-23
申请人： Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama
发明人： Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10504 , G11B11/10517 , G11B11/10584
摘要： A magneto-optical memory device is provided with a recording track having a recording film and a guide track wherein a perpendicular magnetic film, whose magnetization direction is arranged in one direction, is formed, the recording track and the guide track being alternatively disposed. A recording operation is carried out using a circular magnetic field generated from the perpendicular magnetic film by projecting a light beam only on the recording track so as to raise the temperature of the recording film. When erasing, the light beam is projected on the recording track and respective portions of the guide tracks located on both sides of the recording track so as to raise the temperature thereof. As the temperature rises, the magnetization of the perpendicular magnetic film becomes smaller, and an erasing operation is therefore performed using an external magnetic field.
摘要翻译：磁光存储装置具有记录磁道，该记录磁道具有记录膜和导轨，其中形成磁化方向沿一个方向布置的垂直磁膜，记录磁道和导轨交替设置。使用由垂直磁性膜产生的圆形磁场，通过仅将光束投射在记录轨道上以提高记录膜的温度来执行记录操作。当擦除时，光束被投射在记录轨道上，并且位于记录轨道两侧的引导轨道的各个部分以升高其温度。随着温度升高，垂直磁性膜的磁化变小，因此使用外部磁场进行擦除操作。

17. 发明授权

US5278810A Magneto-optical recording medium whereon recording is carried out with an overwriting function 失效
标题翻译：以覆盖功能进行记录的磁光记录介质
公开(公告)号：US5278810A
公开(公告)日：1994-01-11
申请号：US909969
申请日：1992-07-07
申请人： Akira Takahashi , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
发明人： Akira Takahashi , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10519 , G11B11/10584 , G11B11/10586
摘要： A magneto-optical recording medium is consisted of a recording layer, a readout layer and a writing layer. The readout layer is made of rare earth-transition metal alloys wherein an easy magnetization axis is parallel to the recording layer at room temperature, and the easy magnetization axis is perpendicular to the recording layer as the temperature of the readout layer is raised above a predetermined temperature by irradiating thereon with a light beam. The writing layer is made of rare earth-transition metal alloys having such coercive force that a magnetization direction thereof is switched by an external magnetic field at room temperature and Curie temperature that is above Curie temperature of the recording layer. With the above arrangement, an overwriting function can be achieved by adjusting a light intensity of the light beam so that the temperature falls within the range between the Curie temperature of the writing layer and the Curie temperature of the recording layer, or above the Curie temperature of the writing layer.
摘要翻译：磁光记录介质由记录层，读出层和书写层构成。读出层由稀土 - 过渡金属合金制成，其中容易的磁化轴在室温下平行于记录层，随着读出层的温度升高到预定的温度，易磁化轴垂直于记录层通过用光束照射其上的温度。书写层由具有这样的矫顽力的稀土 - 过渡金属合金制成，其磁化方向由室温下的外部磁场和高于记录层的居里温度的居里温度切换。通过上述配置，可以通过调节光束的光强度使得温度落在书写层的居里温度和记录层的居里温度之间或居里温度以上的范围内来实现重写功能的写作层。

18. 发明授权

US5160572A Optical memory device and apparatus for manufacturing the same 失效
标题翻译：光存储装置及其制造装置
公开(公告)号：US5160572A
公开(公告)日：1992-11-03
申请号：US734919
申请日：1991-07-24
申请人： Junichiro Nakayama , Kazuhiro Kimura , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Kazuhiro Kimura , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B7/26
CPC分类号： G11B7/26 , Y10T156/1057 , Y10T156/12
摘要： An apparatus for manufacturing an optical memory device, which includes supplying rolls for continuously supplying a sheet-like substrate, a masking endless belt having a plurality of windows of size corresponding to the optical memory device, rolls for moving the sheet-like substrate and the masking endless belt in the same direction and at the same speed, a recording portion forming device for forming recording portions on the substrate through the masking endless belt, a guide track providing device for providing along the substrate guide tracks for guiding a light beam, and a cutting device for cutting the substrate to a predetermined size.
摘要翻译：一种用于制造光学存储器件的设备，其包括供应用于连续供应片状衬底的辊，具有与光学存储器件相对应的尺寸的多个窗口的掩模环形带，用于移动片状衬底的辊和在相同的方向和相同的速度下掩蔽环形带，用于通过掩模环形带在基板上形成记录部分的记录部分形成装置，用于沿着用于引导光束的基板引导轨道提供的导轨提供装置，以及用于将基板切割成预定尺寸的切割装置。

19. 发明授权

US5117415A Optical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card 失效
标题翻译：光卡，卡座和用于在光卡上记录，再现和擦除信息的装置
公开(公告)号：US5117415A
公开(公告)日：1992-05-26
申请号：US735685
申请日：1991-07-29
申请人： Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama , Kazuhiro Kimura , Hirotsugu Matoba , Shozo Kobayashi
发明人： Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama , Kazuhiro Kimura , Hirotsugu Matoba , Shozo Kobayashi
IPC分类号： G11B7/0033 , G11B7/08 , G11B7/24 , G11B17/34 , G11B25/04
CPC分类号： G11B7/24 , G11B17/34 , G11B25/04 , G11B7/0033 , G11B7/08
摘要： An optical card including an optical storage medium and a single or a plurality of members made of a magnetic material which are incorporated with the optical card is set forth. A card holder for holding the optical card consists of a table for supporting the optical card and a single member or a plurality of members made of a magnetic material for attracting the optical card. An apparatus for recording and reproducing information on and from the optical card held by the card holder includes a light-irradiating unit for emitting light beams onto the optical storage medium of the optical card and a drive unit for relatively moving the card holder and the light-irradiating unit for tracking, with which the recording, reproducing, or erasing operation can be accurately carried out.
摘要翻译：阐述了包括光学存储介质和与光学卡结合在一起的由磁性材料制成的单个或多个构件的光学卡。用于保持光卡的卡夹包括用于支撑光卡的台和用于吸引光卡的单个构件或由磁性材料制成的多个构件。用于在由卡保持器保持的光卡上记录和再现信息的设备包括：用于将光束发射到光卡的光存储介质上的光照射单元和用于相对移动卡夹和光的驱动单元用于跟踪的照射单元，可以准确地执行记录，再现或擦除操作。

20. 发明授权

US5674583A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5674583A
公开(公告)日：1997-10-07
申请号：US461164
申请日：1995-06-05
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/66
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer; the light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably; further, the optical tape is provided with a layer to form guiding grooves for tracking control, which layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层; 反映投影到记录层上的光的光反射性的磁性层也可以在其上进行磁记录或磁光记录，从而显着地增加了光带的存储容量。此外，光带设置有层以形成用于跟踪控制的引导槽，其中形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。

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