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    • 66. 发明授权
    • Magnetic disk device with floating-type magnetic head
    • 带浮动磁头的磁盘装置
    • US5303100A
    • 1994-04-12
    • US752052
    • 1991-08-29
    • Junichiro NakayamaHiroyuki KatayamaTomoyuki MiyakeKenji Ohta
    • Junichiro NakayamaHiroyuki KatayamaTomoyuki MiyakeKenji Ohta
    • G11B21/21G11B5/54G11B11/10G11B11/105G11B19/20G11B21/12G11B5/55
    • G11B19/20G11B11/10556G11B11/1058G11B11/10586G11B11/10595G11B5/54
    • 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.
    • 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。
    • 68. 发明授权
    • Optical recording element having a plurality of thin film filtering
layers and optical recording element having an electrically conductive
layer
    • 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
    • US5214636A
    • 1993-05-25
    • US421757
    • 1989-10-16
    • Toshio IshikawaHiroyuki KatayamaKazuo VanTomoyuki MiyakeJunichiro NakayamaKenji OhtaHideyoshi Yamaoka
    • Toshio IshikawaHiroyuki KatayamaKazuo VanTomoyuki MiyakeJunichiro NakayamaKenji OhtaHideyoshi Yamaoka
    • G11B7/24053G11B7/253G11B7/254
    • G11B7/253G11B7/24053G11B7/254
    • 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.
    • 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。
    • 69. 发明授权
    • Floating type magnetic head device
    • 浮动式磁头装置
    • US5157568A
    • 1992-10-20
    • US624404
    • 1990-12-07
    • Hiroyuki KatayamaJunichiro NakayamaTomoyuki MiyakeKenji Ohta
    • Hiroyuki KatayamaJunichiro NakayamaTomoyuki MiyakeKenji Ohta
    • G11B5/105G11B5/60G11B11/105
    • G11B5/6005G11B11/1058G11B5/105
    • 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.
    • 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。