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21. 发明授权

US5353278A Magneto-optical disk and method of manufacturing the same 失效
标题翻译：磁光盘及其制造方法
公开(公告)号：US5353278A
公开(公告)日：1994-10-04
申请号：US694990
申请日：1991-05-02
申请人： Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
发明人： Yoshiteru Murakami , Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Hirotaka Toki
IPC分类号： G11B11/105 , G11B23/00 , G11B5/54
CPC分类号： G11B23/0042 , G11B11/10582 , G11B11/10584
摘要： A magneto-optical disk comprising a substrate whereon a recording medium is formed, and a depression is formed on the substrate on the inside of the recording medium of the substrate. A center hub is installed on the depression such that the center hub is substantially level with a protective resin layer covering the recording medium. On the center hub, a flying head performs CSS (Contact Start and Stop). This configuration of the disk eliminates the occurrence of dust due to the abrasion and head crash, and achieves stable CSS. A method of manufacturing the magneto-optical disk, wherein the protective resin layer is formed after installing the center hub on the depression. In this method, since a space is not produced between the center hub and the protective resin layer, the stable flying characteristics is obtained. And a magneto-optical disk whereon small physical bumps and pits are formed on the substrate on the inside of the recording medium, which prevents the flying head from sticking to the disk. A method of manufacturing the magneto-optical disk by using a stamper, which permits the disk to be mass produced.
摘要翻译：一种磁光盘，包括形成记录介质的基板，并且在基板的记录介质的内侧上的基板上形成凹陷。中心毂安装在凹陷处，使得中心毂基本上与覆盖记录介质的保护树脂层水平。在中心枢纽上，飞头执行CSS（联系人启动和停止）。盘的这种配置消除了由于磨损和头部碰撞引起的灰尘的发生，并且实现了稳定的CSS。一种制造磁光盘的方法，其中在将中心毂安装在凹陷部之后形成保护树脂层。在该方法中，由于在中心轮毂和保护树脂层之间不产生空间，因此获得了稳定的飞行特性。另外，在记录介质的内侧的基板上形成小的物理凸点和凹坑的磁光盘，防止飞头粘附到盘上。通过使用压模来制造磁光盘的方法，该压模允许大量生产盘。

22. 发明授权

US5343448A External magnetic field device for a magnetooptical information recording and reproducing apparatus 失效
标题翻译：用于磁光信息记录和再现装置的外部磁场装置
公开(公告)号：US5343448A
公开(公告)日：1994-08-30
申请号：US949335
申请日：1992-09-22
申请人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Takahiro Miyake , Kenji Ohta , Shozo Kobayashi
发明人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Takahiro Miyake , Kenji Ohta , Shozo Kobayashi
IPC分类号： G11B11/105 , G11B11/00 , G11B11/10
CPC分类号： G11B11/10508
摘要： An external magnetic field device for a magnetooptical information recording and reproducing apparatus in which an external magnetic field to be applied to a magnetooptical information recording medium is modulated by supplying to a magnetic head an alternate current the polarity of which is changed according to information to be recorded. The device comprises an offset circuit for producing an offset in the alternate current. The direction of the offset is selected so as to increase the current level of the polarity by which the initial magnetization of the information recording medium is reversed. The direction of the offset may be selected so as to cancel the leakage magnetic field.
摘要翻译：一种用于磁光信息记录和再现装置的外部磁场装置，其中通过向磁头提供施加到磁光信息记录介质的外部磁场，该极性的极性根据要被改变的信息而改变记录。该装置包括用于在交流电中产生偏移的偏置电路。选择偏移的方向，以便增加信息记录介质的初始磁化反转的极性的电流电平。可以选择偏移的方向以抵消泄漏磁场。

23. 发明授权

US5338646A Optical memory device having an improved light reflection or optical memory layer 失效
标题翻译：具有改进的光反射或光存储层的光存储器件
公开(公告)号：US5338646A
公开(公告)日：1994-08-16
申请号：US15066
申请日：1993-02-08
申请人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kazuo Van , Kenji Ohta
发明人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kazuo Van , Kenji Ohta
IPC分类号： G11B7/24 , G11B7/244 , G11B7/247 , G11B7/248 , G11B7/251 , G11B7/254 , G11B7/257 , G11B7/258 , G03C1/72 , G11B5/702 , G11B5/706
CPC分类号： G11B7/258 , G11B7/244 , G11B7/2472 , G11B7/248 , G11B7/251 , G11B2007/24308 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/259 , G11B7/2595 , Y10S428/90 , Y10S430/146
摘要： An optical memory device comprising at least one transparent substrate and a light reflection layer or an optical memory layer laminated on one surface of the substrate, in which the light reflection layer or the optical memory layer is constituted with a UV-ray or electron-ray cured resin dispersingly containing a light reflective metal powder or an optical recording material.
摘要翻译：一种光学存储器件，包括至少一个透明基板和层叠在基板的一个表面上的光反射层或光学存储器层，其中光反射层或光学存储器层由UV射线或电子射线分散含有光反射金属粉末或光学记录材料的固化树脂。

24. 发明授权

US5303100A Magnetic disk device with floating-type magnetic head 失效
标题翻译：带浮动磁头的磁盘装置
公开(公告)号：US5303100A
公开(公告)日：1994-04-12
申请号：US752052
申请日：1991-08-29
申请人： Junichiro Nakayama , Hiroyuki Katayama , Tomoyuki Miyake , Kenji Ohta
发明人： Junichiro Nakayama , Hiroyuki Katayama , Tomoyuki Miyake , Kenji Ohta
IPC分类号： G11B21/21 , G11B5/54 , G11B11/10 , G11B11/105 , G11B19/20 , G11B21/12 , G11B5/55
CPC分类号： G11B19/20 , G11B11/10556 , G11B11/1058 , G11B11/10586 , G11B11/10595 , G11B5/54
摘要： A magnetic disk device having a floating-type magnetic head, for use with a disk-shaped recording medium having a sliding area for the floating-type magnetic head formed outside a recording area. The length in the disk radial direction of a suspension supporting the floating-type magnetic head is varied depending on individual magnetic disk devices. In another arrangement, a control means is provided for setting two reference values so that a radial position of the floating-type magnetic head detected by a detection section is compared with these reference values, and for alternating one of the preset reference values to the other reference value upon receiving a rotation stop signal. In still another arrangement, control means is provided, whereby a radial position for sliding of the floating-type magnetic head is randomly varied within the sliding area. According to these arrangements, since the radial position for sliding of the floating-type magnetic head is varied within the sliding area without being located at the same position, abrasion within the sliding area can be dispersed. As a result, it becomes possible to extend the longevities of the floating-type magnetic head and the recording medium.
摘要翻译：一种具有浮动型磁头的磁盘装置，与形成在记录区域之外的浮动型磁头的滑动区域的盘形记录介质一起使用。支撑浮动型磁头的悬架的盘径方向上的长度根据各个磁盘装置而变化。在另一种布置中，提供控制装置用于设置两个参考值，使得由检测部分检测到的浮动型磁头的径向位置与这些参考值进行比较，并且将一个预设参考值与另一个参考值交替接收到旋转停止信号时的参考值。在另一种布置中，提供控制装置，由此浮动式磁头的滑动的径向位置在滑动区域内随机变化。根据这些布置，由于浮动型磁头的滑动的径向位置在滑动区域内变化而不位于相同的位置，所以可以分散滑动区域内的磨损。结果，可以延长浮动型磁头和记录介质的寿命。

25. 发明授权

US5270994A Magneto-optical recording and reading method 失效
标题翻译：磁光记录和读取方法
公开(公告)号：US5270994A
公开(公告)日：1993-12-14
申请号：US931990
申请日：1992-08-19
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： G11B11/105 , G11B19/02 , G11B7/00
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. A control 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.
摘要翻译：提供磁光存储器元件的记录和读取方法和装置，用于通过发光元件记录和读取与包含至少两个磁耦合的磁层的磁光存储元件的信息信号，采用记录磁场和初始化磁场的强度调制重写方法。包括控制特征，用于在将磁光存储元件移动到记录或读取位置，完成读取或记录之间的时间点之间的至少一个时间将初始化磁场施加到磁光存储元件，并且确定所选择的操作如记录或擦除以及后续记录开始的时间点，使得初始化磁场不与记录磁场同时施加。

26. 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.

27. 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。

28. 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。

29. 发明授权

US5081614A Magneto-optical head utilizing central and peripheral portions of reflected light flux for different purposes 失效
标题翻译：用于不同目的的反射光通量的中心和外围部分的磁光头
公开(公告)号：US5081614A
公开(公告)日：1992-01-14
申请号：US577817
申请日：1990-09-04
申请人： Akira Takahashi , Toshihisa DeGuchi , Yoshiteru Murakami , Michinobu Mieda , Kazuo Van , Kenji Ohta , Hiroyuki Katayama , Tomoyuki Miyake
发明人： Akira Takahashi , Toshihisa DeGuchi , Yoshiteru Murakami , Michinobu Mieda , Kazuo Van , Kenji Ohta , Hiroyuki Katayama , Tomoyuki Miyake
IPC分类号： G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B11/10532 , G11B7/12 , G11B7/1381
摘要： A magneto-optical head wherein a light flux, which is reflected from a recording medium, is separated into its central portion and remaining portion. The central light flux portion is only used as a magneto-optical signal while the remaining light flux portion is only used as an optical servo signal.
摘要翻译：一种磁光头，其中从记录介质反射的光束被分离成其中心部分和剩余部分。中央光束部分仅用作磁光信号，而剩余光通量部分仅用作光伺服信号。

30. 发明授权

US4985885A Optical memory device 失效
标题翻译：光存储设备
公开(公告)号：US4985885A
公开(公告)日：1991-01-15
申请号：US213817
申请日：1988-06-30
申请人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Hiroyuki Katayama , Junji Hirokane , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B19/12 , G11B19/20
CPC分类号： G11B19/12 , G11B11/10584 , G11B11/10586 , G11B19/20
摘要： An optical memory device comprising a first light-permeable substrate, a second light-permeable substrate and a plurality of strip-shaped optical recording layers that are disposed with a gap between the first substrate and the second substrate, wherein the optical path length from the outer surface of the first substrate to the recording layers is approximately equal to the optical path length from the outer surface of the second surface to the recording layers.

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