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71. 发明授权

US5233597A Magneto-optical disk having a layer of varying thickness 失效
标题翻译：具有变化厚度的MAGNETO-OPTICAL DISK
公开(公告)号：US5233597A
公开(公告)日：1993-08-03
申请号：US714933
申请日：1991-06-13
申请人： Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/105 , G11B23/00
CPC分类号： G11B23/0021 , G11B11/10584 , Y10S430/146
摘要： A magneto-optical disk according to the present invention has a substrate (12), a recording layer (13) formed on the substrate and an outer layer (14) formed on the recording layer, above which a floating head is hovered. The outer layer is constituted of a protective layer, an antisticking layer for head, having a texture formed on its surface and other layers. The magneto-optical disk is designed such that, when rotated at a constant angular velocity, the thickness of the outer layer (14) is substantially inversely proportional to a radial position r on the magneto-optical disk raised to the 1/2nd power. In the formation of the outer layer, a screen whose meshes become gradually finer from the innermost portion toward the circumferential portion of the magneto-optical disk is employed based on the screen printing technique. Further, photo hardening resin is used as the outer layer, and simply by changing a wavelength or irradiation amount of light to be applied thereto, a texture is readily formed on the surface of the outer layer. By the use of the present invention, stable recording, erasing and re-writing operations are achieved, and it becomes possible to prevent the floating head from sticking to the magneto-optical disk and reduce the cost thereof.

72. 发明授权

US5214636A Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer 失效
标题翻译：具有多个薄膜滤光层的光学记录元件和具有导电层的光学记录元件
公开(公告)号：US5214636A
公开(公告)日：1993-05-25
申请号：US421757
申请日：1989-10-16
申请人： Toshio Ishikawa , Hiroyuki Katayama , Kazuo Van , Tomoyuki Miyake , Junichiro Nakayama , Kenji Ohta , Hideyoshi Yamaoka
发明人： Toshio Ishikawa , Hiroyuki Katayama , Kazuo Van , Tomoyuki Miyake , Junichiro Nakayama , Kenji Ohta , Hideyoshi Yamaoka
IPC分类号： G11B7/24053 , G11B7/253 , G11B7/254
CPC分类号： G11B7/253 , G11B7/24053 , G11B7/254
摘要： An optical recording element according to the present invention comprising: (i) a transparent substrate through which light passes; (ii) a transparent low-resistance layer having a specific resistance so as to prevent the adhesion of dust to the surface of the element caused by a static charge, the layer being formed on the surface, on which a light beam is incident, of the transparent substrate; and (iii) an optical thin film composed of at least one layer, formed on the other surface of the transparent substrate so as to transmit light beams used for recording, erasing and playback, and reflect lights which have wavelengths different from the wavelength of the above light beams and are within a specified visible region of the spectrum. With this arrangement, lights within a specified visible region of the spectrum are reflected so that the element appears to be colored according to the wavelengths of the reflected lights. Also, a problem often found in a conventional optical recording element having a transparent substrate of a resin material that the surface of the element is hardened by a light beam, can be solved. Even if a static charge is generated on the surface of such an element, the conductive transparent low-resistance substrate can eliminate the static charge outward whereby a static charge is less likely to be accumulated and the surface can be kept clean in order to improve the reliability.
摘要翻译：根据本发明的光学记录元件包括：（i）光通过的透明基板; （ii）具有电阻率的透明低电阻层，以防止由静电引起的灰尘附着在元件表面上，该层形成在光束入射的表面上的层是透明基板; 和（iii）由至少一层构成的光学薄膜，形成在透明基板的另一个表面上，以透射用于记录，擦除和重放的光束，并且反射具有与波长不同的波长的光在光束之上，并且在光谱的指定可视区域内。通过这种布置，光谱的指定可视区域内的光被反射，使得该元件看起来根据反射光的波长着色。而且，通过在具有树脂材料的透明基板的光学记录元件中经常发现的问题在于，元件的表面被光束硬化。即使在这种元件的表面上产生静电荷，导电透明低电阻基板也可以向外消除静电荷，由此静电荷不易累积，并且表面可以保持清洁以改善可靠性。

73. 发明授权

US5157568A Floating type magnetic head device 失效
标题翻译：浮动式磁头装置
公开(公告)号：US5157568A
公开(公告)日：1992-10-20
申请号：US624404
申请日：1990-12-07
申请人： Hiroyuki Katayama , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
发明人： Hiroyuki Katayama , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
IPC分类号： G11B5/105 , G11B5/60 , G11B11/105
CPC分类号： G11B5/6005 , G11B11/1058 , G11B5/105
摘要： A floating type magnetic head device of the present invention includes a slider capable of floating above a recording medium while moving relatively to the recording medium, and a magnetic head. The magnetic head is incorporated inside a cavity section formed substantially in the center of the slider. By incorporating the magnetic head inside the cavity section, the magnetic head can be protected, thereby reducing a possibility of head crash of the magnetic head due to its contact with dust or a projecting object existing on the surface of the recording medium. Further, by disposing the magnetic head substantially in the center of the slider, it can be avoided that the direction of an air stream at the center of the slider varies depending on an instantaneous position in a radial direction of the recording medium, thereby providing stable floating characteristics of the floating type magnetic head device and improving accuracy of recording.
摘要翻译：本发明的浮动式磁头装置包括能够在相对于记录介质移动的同时在记录介质上漂浮的滑块和磁头。磁头装在基本上形成在滑块中心的空腔部分内。通过将磁头结合在空腔部分内，可以保护磁头，从而减少磁头由于与灰尘或存在于记录介质表面上的突出物体的接触而头部碰撞的可能性。此外，通过将磁头设置在滑块的中心，可以避免滑块中心处的空气流的方向根据记录介质的径向方向上的瞬时位置而变化，从而提供稳定的浮动式磁头装置的浮动特性，提高记录精度。

74. 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

75. 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。

76. 发明授权

US5175721A Magneto-optical recording and reading device with initilization 失效
标题翻译：具有启动的磁光记录和读取装置
公开(公告)号：US5175721A
公开(公告)日：1992-12-29
申请号：US575013
申请日：1990-08-30
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： G11B11/10 , G11B11/105 , G11B19/02
CPC分类号： G11B11/10595 , G11B11/10517 , G11B11/10523 , G11B11/1056 , G11B19/02
摘要： A recording and reading method and device of magneto-optical memory elements are provided to record and read an information signal to and from the magneto-optical memory elements, which contain at least two magnetic layers that are magnetically coupled, by means of a light-intensity modulated overwriting method employing a recording magnetic field and an initializing magnetic field feature is included for applying the initializing magnetic field to the magneto-optical memory elements at least one time between the point of time when moving the magneto-optical memory elements to a recording or reading position, finishing a reading or recording, and ascertaining the selected operation such as recording or erasing and the point of time when subsequent recording begins such that the initializing magnetic field is not applied at the same time as the recording magnetic field.

77. 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。

78. 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。

79. 发明授权

US5107471A Magnetic head having a rectangular configuration for use in a magneto-optical recording system 失效
标题翻译：具有用于磁光记录系统的矩形配置的磁头
公开(公告)号：US5107471A
公开(公告)日：1992-04-21
申请号：US594302
申请日：1990-10-09
申请人： Tomoyuki Miyake , Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama
发明人： Tomoyuki Miyake , Kenji Ohta , Hiroyuki Katayama , Junichiro Nakayama
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/1058 , G11B11/10536
摘要： A floating type magnetic head for magneto-optical recording, the magnetic head being positioned opposite to an optical head with a magneto-optical recording medium inserted therebetween. The magnetic head is supported out of contact with the magneto-optical recording medium and includes a slider and a head core. The head core has an end section located parallel to the magneto-optical medium. The end section is formed to be longer in the direction orthogonal to the tracks contained on the medium than in the direction parallel to the tracks.

80. 发明授权

US06804822B2 Magnetic recording medium and magnetic recording apparatus using same 有权
标题翻译：磁记录介质和使用其的磁记录装置
公开(公告)号：US06804822B2
公开(公告)日：2004-10-12
申请号：US10132775
申请日：2002-04-25
申请人： Junichi Sato , Kosuke Watanabe , Kunio Kojima , Hiroyuki Katayama , Hiroshi Fuji , Kenji Ohta
发明人： Junichi Sato , Kosuke Watanabe , Kunio Kojima , Hiroyuki Katayama , Hiroshi Fuji , Kenji Ohta
IPC分类号： G11B724
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/74 , G11B5/82 , G11B11/10508 , G11B11/10584 , G11B11/10591 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording medium, which includes a substrate and an amorphous magnetic layer, made of an amorphous magnetic material, for magnetic recording of data, is provided with an underlayer between the substrate and the amorphous magnetic layer, the underlayer being made of amorphous metal element, and having a mean thickness of 10 nm or less. In this manner, movement of magnetic domain walls of the amorphous magnetic layer is effectively limited by minute irregularities on a surface of the underlayer. This realizes a stable formation of a minute recording mark. This realizes recording having a sufficient signal quality, even when the high-density recording is performed by forming such a minute recording mark that a shortest length of the recording mark is less than 100 nm. Moreover, this allows the magnetic recording medium to have a simplified layer structure. Further, a magnetic recording apparatus magnetically records data onto a magnetic recording medium having the above arrangement, by heating a portion of the magnetic layer by radiating a light beam locally, and by applying a magnetic field on at least part of the portion of the magnetic layer on which the light beam is radiated. This provides a magnetic recording apparatus for high-density recording.
摘要翻译：包括由非晶磁性材料制成的用于磁记录数据的基板和非晶磁性层的磁记录介质在基板和非晶磁性层之间设置有底层，底层由非晶金属元件平均厚度为10nm以下。以这种方式，非晶磁性层的磁畴壁的运动被有效地限制在底层表面上的微小凹凸。这实现了一个稳定的分钟记录标记的形成。这实现了具有足够的信号质量的记录，即使当通过形成记录标记的最短长度小于100nm的这种微小记录标记来执行高密度记录时。此外，这允许磁记录介质具有简化的层结构。此外，磁记录装置将数据磁记录到具有上述结构的磁记录介质上，通过局部辐射光束加热磁性层的一部分，并且通过在磁体的至少一部分上施加磁场光束辐射的层。这提供了用于高密度记录的磁记录装置。

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