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1. 发明授权

US4719137A Magneto-optic memory element 失效
标题翻译：磁光存储元件
公开(公告)号：US4719137A
公开(公告)日：1988-01-12
申请号：US721707
申请日：1985-04-10
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B7/24
CPC分类号： G11B11/10586 , G11B11/10593 , Y10S428/90 , Y10S430/146 , Y10T428/22 , Y10T428/31678
摘要： A magneto-optic memory element includes a GdTbFe recording layer sandwiched between a pair of transparent AlN dielectric layers. At least one of the pair of transparent AlN dielectric layers is extended to have a size larger than the GdTbFe recording layer so as to cover the peripheral edge of the GdTbFe recording layer, thereby protecting the GdTbFe recording layer from oxygen and moisture. An Al-Ni alloy reflection film is formed on one of the pair of transparent AlN dielectric layers in order to increase the apparent Kerr rotation angle produced by the magneto-optic memory element.

2. 发明授权

US4740947A Dual surface optical memory disc 失效
标题翻译：双面光学记忆盘
公开(公告)号：US4740947A
公开(公告)日：1988-04-26
申请号：US61034
申请日：1987-06-12
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirogane , Yoshiteru Murakami
IPC分类号： B29C65/48 , G11B7/24 , G11B11/105
CPC分类号： G11B11/10586 , B29C65/1406 , B29C65/4845 , B29C65/4875 , B29C66/452 , B29C66/73366 , G11B7/24015 , G11B7/24024 , B29C65/4885 , B29C65/7826 , B29C66/8322 , B29L2017/005
摘要： A first optical memory disc and a second optical memory disc are fixed to each other by an adhesive layer so as to form a dual-surface optical memory disc. In a manufacturing step, an adhesive, preferably pre-cured photo-polymer mixed with spherical spacer elements, is painted on either one of or both of the first and second optical memory discs. When a predetermined pressure is applied between the two optical memory discs, the thickness of the adhesive layer is fixed by the diameter of the spherical spacer elements. While the pressure is applied between the two optical memory discs, ultraviolet rays are applied to the adhesive layer through one of the first or second optical memory discs so as to cure the photo-polymer, thereby tightly joining the first and second optical memory discs to each other.
摘要翻译：第一光存储盘和第二光存储盘通过粘合剂层彼此固定，以形成双表面光存储盘。在制造步骤中，将粘合剂，优选与球形间隔元件混合的预固化光聚合物涂覆在第一和第二光学存储盘的一个或两个上。当在两个光学存储盘之间施加预定的压力时，粘合剂层的厚度由球形间隔元件的直径固定。当在两个光学存储盘之间施加压力时，通过第一或第二光学存储盘中的一个将紫外线施加到粘合剂层，以便固化光聚合物，从而将第一和第二光学存储盘紧密连接到彼此。

3. 再颁专利

USRE35629E Magneto-optical memory element 失效
标题翻译：磁光存储元件
公开(公告)号：USRE35629E
公开(公告)日：1997-10-14
申请号：US136019
申请日：1993-10-14
申请人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
发明人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B7/24
CPC分类号： G11B11/10584 , G11B11/10586
摘要： A magneto-optical memory element has a multi-layer construction in the order from a side first receiving light from a light-source which includes a first transparent dielectric film, a rare earth transition metal alloy film, a second transparent dielectric film and a reflective film. The magneto-optical device uses circular dichroism effect of a magnetic mater for reading information. The rare earth transition metal alloy film has a refractive index represented by n.+-..DELTA.n wherein n=3.2-3.55i and .DELTA.n=0.05-0.03i. The thickness of film is about 18 to 46 nm. The second transparent dielectric film has a refractive index of 2.0.+-.0.2 and a film thickness of 80 to 108 nm.
摘要翻译：磁光存储元件具有从第一次接收来自光源的一侧的顺序的多层结构，该光源包括第一透明电介质膜，稀土过渡金属合金膜，第二透明电介质膜和反射电影。磁光装置使用磁性体的圆二色性来读取信息。稀土过渡金属合金膜的折射率为n +/- DELTA n，n = 3.2-3.55i，DELTA n = 0.05-0.03i。膜的厚度为约18至46nm。第二透明电介质膜的折射率为2.0 +/- 0.2，膜厚为80〜108nm。

4. 发明授权

US5053611A Device for reducing mechanical vibrations when utilizing a magneto-optical card as a recording medium 失效
标题翻译：使用磁光卡作为记录介质时减少机械振动的装置
公开(公告)号：US5053611A
公开(公告)日：1991-10-01
申请号：US287053
申请日：1988-12-21
申请人： Akira Takahashi , Yoshiteru Murakami , Junichiro Nakayama , Kenji Ohta , Hiroyuki Katayama , Michinobu Mieda
发明人： Akira Takahashi , Yoshiteru Murakami , Junichiro Nakayama , Kenji Ohta , Hiroyuki Katayama , Michinobu Mieda
IPC分类号： G11B11/10 , G11B7/0033 , G11B11/105 , G11B17/34
CPC分类号： G11B11/10565 , G11B11/10556 , G11B11/1056 , G11B11/10563 , G11B17/34 , G11B7/0033
摘要： A recording and reproducing device for a magneto-optical card includes an optical head for irradiating a magneto-optical recording medium of a magneto-optical card placed into the device with a laser beam. A magnetic field generator applies a biased magnetic field to the magneto-optical recording medium, and an optical system manipulating mechanism for the optical system of the above-mentioned optical head varies the spot irradiated by the laser beam. The optical head is fixed to the main frame of the device. The magneto-optical card is also supported where it is irradiated by the laser beam emitted from the optical head. The magneto-optical card is moved in a plane parallel to the surface of the magneto-optical card for rough searching and then a part of or the whole magnetic field generator is moved to come into contact with the magneto-optical card to stop the vibration of the magneto-optical card. The spot to be irradiated by the laser beam is then varied by means of the optical system of the optical head.

5. 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。

6. 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

7. 发明授权

US5305254A Magneto-optic memory device 失效
标题翻译：磁光存储器件
公开(公告)号：US5305254A
公开(公告)日：1994-04-19
申请号：US993517
申请日：1992-12-17
申请人： Yoshiteru Murakami , Junichiro Nakayama , Ichiro Hiramatsu , Akira Takahashi , Kenji Ohta , Kazuo Van , Hiroyuki Katayama
发明人： Yoshiteru Murakami , Junichiro Nakayama , Ichiro Hiramatsu , Akira Takahashi , Kenji Ohta , Kazuo Van , Hiroyuki Katayama
IPC分类号： G11B5/64 , G11B11/105 , G11C13/04
CPC分类号： G11B5/64 , G11B11/10582
摘要： A magneto-optic memory device, such as a magneto-optic disk or magneto-optic card having a pair of opposed substrates at least one of which is transparent. Between the substrates is a magneto-optic memory layer made of a stack of dielectric film, a rear earth-transition metal alloy thin film, a dielectric film and a light reflecting film built on the surface of the transparent substrate opposed to the other substrate. An adhesive layer covers the memory layer and bonds the transparent substrate to the other substrate. Lastly, a metal nitride film interposed between the light reflecting film of the memory layer and the adhesive layer.
摘要翻译：磁光存储器件，例如磁光盘或磁光卡，其具有一对相对的衬底，其中至少一个是透明的。在基板之间是由与介质膜叠层构成的磁光存储层，后置接地 - 过渡金属合金薄膜，电介质膜和反射膜构成在与其他基板相对的透明基板的表面上。粘合剂层覆盖存储层并将透明基底粘合到另一个基底上。最后，介于存储层的光反射膜和粘合剂层之间的金属氮化物膜。

8. 发明授权

US5002813A Substrate with protective film and method of manufacturing optical memory device using the same 失效
标题翻译：具有保护膜的基板和使用其制造光学存储器件的方法
公开(公告)号：US5002813A
公开(公告)日：1991-03-26
申请号：US384254
申请日：1989-07-21
申请人： Junichiro Nakayama , Kenji Ohta , Hiroyuki Katayama , Akira Takahashi , Yoshiteru Murakami
发明人： Junichiro Nakayama , Kenji Ohta , Hiroyuki Katayama , Akira Takahashi , Yoshiteru Murakami
IPC分类号： B42D15/10 , G06K19/06 , G11B7/24 , G11B7/26
CPC分类号： G11B7/26 , Y10S428/913 , Y10S430/146 , Y10T156/10 , Y10T428/239 , Y10T428/31507
摘要： A substrate for manufacturing an optical memory device includes one surface covered with a protective film provided with openings only in portions corresponding to recording layers to be formed on the substrate, thereby allowing the protective film to function as a mask for forming the recording layers in a recording layer forming process. Also disclosed is a method of manufacturing an optical memory device including the steps of continuously feeding a substrate covered with a protective film provided with openings only in portions corresponding to recording layers to be formed on the substrate, forming the recording layers through the openings on the substrate, forming guide tracks on the substrate, stripping the protective film from the substrate, cutting the substrate to a predetermined size, and forming a protective layer on the substrate.
摘要翻译：用于制造光学存储器件的衬底包括一个被保护膜覆盖的表面，该保护膜仅在对应于要形成在衬底上的记录层的部分中具有开口，从而允许保护膜用作掩模，用于形成记录层记录层形成过程。还公开了一种制造光学存储器件的方法，包括以下步骤：将覆盖有保护膜的衬底连续地供给到仅在对应于要形成在衬底上的记录层的部分上的开口，通过上述开口形成记录层基板，在基板上形成引导轨道，从基板剥离保护膜，将基板切割成预定尺寸，以及在基板上形成保护层。

9. 发明授权

US5662988A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5662988A
公开(公告)日：1997-09-02
申请号：US387294
申请日：1995-02-10
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Yoshiteru Murakami
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B11/10 , G11B13/04
CPC分类号： G11B11/10586 , G11B11/10506 , G11B11/10515 , Y10S428/90 , Y10S430/146 , Y10T428/12632 , Y10T428/12861 , Y10T428/12986 , Y10T428/24942 , Y10T428/31678
摘要： The magneto-optical recording medium is provided with a readout layer which shows the in-plane magnetization and which changes from the in-plane magnetization to the vertical magnetization when its temperature rises higher than a predetermined temperature by irradiation of the light beam, a memory layer which records information thereon magneto-optically, an intermediate layer which keeps in-plane magnetization from room temperatures to its Curie temperature, and an writing layer which has a Curie temperature higher than that of the memory layer and has coercive force lower than that of the memory layer. Since the intermediate layer becomes a domain wall in optical modulation recording, it prevents the memory layer and the writing layer from forming a domain wall, so information can be recorded in good condition. Moreover, a portion of the readout layer besides a center portion of the light beam shows the in-plane magnetization and masks the memory layer at playback. Therefore, a recording bit can be made small and recording density can be improved without increasing interference of signals from neighboring recording bits, which causes noises.
摘要翻译：磁光记录介质设置有读出层，该读出层显示平面内的磁化强度，并且当读出层的温度通过照射光束而升高到高于预定温度时，其从平面内磁化强度变化到垂直磁化强度;存储器在磁光上记录信息的层，将室内的平面磁化保持到其居里温度的中间层，以及具有比存储层的居里温度高的居里温度并具有低于存储层的矫顽力的矫顽力的写层内存层。由于中间层成为光调制记录中的畴壁，因此防止存储层和写入层形成畴壁，因此可以将信息记录在良好状态。此外，除了光束的中心部分之外，读出层的一部分表示平面内磁化，并且在重放时掩蔽存储层。因此，可以使记录位小，并且可以提高记录密度，而不会增加来自相邻记录位的信号的干扰，这导致噪声。

10. 发明授权

US5637394A Magneto-optical recording medium and method of reproducing magneto-optical information using thereof 失效
标题翻译：磁光记录介质及其再现磁光信息的方法
公开(公告)号：US5637394A
公开(公告)日：1997-06-10
申请号：US356857
申请日：1994-12-15
申请人： Junsaku Nakajima , Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Hiroyuki Katayama , Kenji Ohta
发明人： Junsaku Nakajima , Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , G11B11/10515 , G11B11/10584 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium comprising a readout layer and a recording layer has a relationship that an external magnetic field H1 is smaller than an external magnetic field H4, where the H1 is a minimum external magnetic field necessary to make a magnetization direction of the readout layer direct to the direction reverse to a magnetization direction of the recording layer substantially at the room temperature, and the H4 is a maximum external magnetic field necessary to make the magnetization direction of the readout layer direct to the direction same as the magnetization direction of the recording layer at an high temperature not lower than a predetermined temperature. Moreover, the magneto-optical disk is provided, between the readout layer and the recording layer, with an intermediate layer which inhibits an effective bias magnetic field from the recording layer to the readout layer at the room temperature. Since it is possible to reproduce only the information in the high-temperature area close to the center of the laser beam irradiated during reproducing, recording density is improved. Furthermore, since an initializing magnetic field at reproducing is not necessary and the reproducing magnetic field can be made smaller, the apparatus can be made smaller and the electric power consumption can be decreased.
摘要翻译：包括读出层和记录层的磁光记录介质具有外部磁场H1小于外部磁场H4的关系，其中H1是使读出磁化方向发生所需的最小外部磁场层直接与基本上在室温下的记录层的磁化方向相反的方向，并且H4是使读出层的磁化方向直到与磁化方向相同的方向所需的最大外部磁场记录层在不低于预定温度的高温下进行。此外，在读出层和记录层之间设置磁光盘，其中间层在室温下抑制从记录层到读出层的有效偏置磁场。由于只能再现靠近在再现期间照射的激光束的中心的高温区域的信息，所以记录密度提高。此外，由于不需要再现时的初始化磁场并且可以使再现磁场更小，所以可以使装置更小，并且可以降低电力消耗。

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