公开(公告)号：US5043833A

公开(公告)日：1991-08-27

申请号：US535113

申请日：1990-06-08

申请人： Shinichi Aikawa ,  Fumio Nagase ,  Yoshiaki Sakai

发明人： Shinichi Aikawa ,  Fumio Nagase ,  Yoshiaki Sakai

IPC分类号： G11B5/265 ,  G11B5/10 ,  G11B5/60 ,  G11B17/32 ,  G11B21/21

CPC分类号： G11B17/32 ,  G11B5/10

摘要： A magnetic head assembly comprises a base defined with a flat slide surface on which a magnetic disk is contacted and a magnetic core embedded on the base surface so as to form a flush surface on the slide surface. The slide surface extends in a direction of rotation of the magnetic disk for a length B and has a width A in which the ration B/A is chosen equal to or larger than 4. The length B is set so as to satisfy a relation 0.35 m.ltoreq.B.ltoreq.0.55 m, where m is the length of an access opening in the housing for the disk in the rotational direction of the disk. At the same time, the slide surface is finished with such a precision that the slide surface shows a specular gloss. With such a magnetic head, the vibration of magnetic head assembly associated with rotation of the magnetic disk is successfully suppressed.

摘要翻译： 磁头组件包括限定有平坦的滑动表面的基座，磁盘接触在其上，并且磁芯嵌入在基座表面上，以在滑动表面上形成平齐的表面。 滑动表面沿磁盘的旋转方向延伸长度B，并且具有其中B / A选择为等于或大于4的宽度A.长度B设定为满足0.35的关系 m

公开(公告)号：US5032934A

公开(公告)日：1991-07-16

申请号：US395736

申请日：1989-08-18

申请人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

发明人： Shinichi Aikawa ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Fumio Nagase

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/10

CPC分类号： G11B20/10212 ,  G11B20/10009 ,  G11B5/012 ,  G11B5/09

摘要： A magnetic disc apparatus comprises a single write/read magnetic head for carrying out write/read with respect to either one of a low-density magnetic disc and a high-density magnetic disc, and a cosine equalizer supplied with a read signal from the write/read magnetic head. The write/read magnetic head has a core gap length which is between 0.60 and 1.20 times a minimum field conversion length for high-density write by a write/read signal.

摘要翻译： 磁盘装置包括用于执行相对于低密度磁盘和高密度磁盘中的任一个的写入/读取的单个写入/读取磁头和被提供有来自写入的读取信号的余弦均衡器 /读磁头。 写入/读取磁头具有通过写入/读取信号进行高密度写入的最小场转换长度的0.60到1.20倍的磁芯间隙长度。

公开(公告)号：US5329510A

公开(公告)日：1994-07-12

申请号：US983116

申请日：1992-11-30

申请人： Hiroshi Tsuyuguchi ,  Shinichi Aikawa ,  Fumio Nagase

发明人： Hiroshi Tsuyuguchi ,  Shinichi Aikawa ,  Fumio Nagase

IPC分类号： G11B19/12 ,  G11B19/04 ,  G11B20/12 ,  G11B20/18 ,  G11B5/012

CPC分类号： G11B19/04 ,  G11B19/12 ,  G11B20/1252 ,  G11B20/1833

摘要： A data transfer system of the type including a disk drive for selective use with flexible magnetic disk cartridges of first and second storage capacities (e.g. 1 MB and 4 MB), the first storage capacity being less than the second storage capacity, a host computer, and a controller for controlling the operation of the disk drive under the direction of the host computer. The controller is factory preprogrammed to discriminate between unformatted disk cartridges of the two different storage capacities as either of the two types of disk cartridges is loaded in the disk drive. The program is such that, in response to the first of a series of formatting commands at the first storage capacity from the host computer, the controller causes the disk drive to write track format for the second storage capacity on a preassigned track (e.g. inmost track) on the disk and then immediately to read the track format. If the retrieved track format contains errors, it follows that the loaded disk cartridge is of the first storage capacity. Accordingly, the controller proceeds to format the disk cartridge at the first storage capacity. If the retrieved track format does not contain errors, on the other hand, then the loaded disk cartridge is of the second storage capacity. Thereupon the controller signals the host computer to that effect.

摘要翻译： 一种数据传输系统，包括用于选择性地使用第一和第二存储容量（例如1MB和4MB）的柔性磁盘盒的磁盘驱动器，第一存储容量小于第二存储容量，主计算机， 以及用于在主计算机的方向上控制磁盘驱动器的操作的控制器。 控制器出厂预编程，以区分两种不同存储容量的未格式化的磁盘盒，因为两种类型的磁盘盒都装载在磁盘驱动器中。 该程序使得响应于来自主计算机的第一存储容量的一系列格式化命令中的第一个，控制器使得磁盘驱动器在预分配的轨道（例如，最前面的轨迹）上写入用于第二存储容量的磁道格式 ）在磁盘上，然后立即读取轨道格式。 如果检索到的磁道格式包含错误，则装载的磁盘盒是第一个存储容量。 因此，控制器以第一存储容量进行格式化盘盒。 另一方面，如果检索到的磁道格式不包含错误，则装入的磁盘盒具有第二存储容量。 因此，控制器向主机发出信号。

公开(公告)号：US4811140A

公开(公告)日：1989-03-07

申请号：US139066

申请日：1987-12-21

申请人： Katsuya Enami ,  Sinobu Kawamura ,  Fumio Nagase ,  Shinichi Aikawa

发明人： Katsuya Enami ,  Sinobu Kawamura ,  Fumio Nagase ,  Shinichi Aikawa

IPC分类号： G11B17/32 ,  G11B5/11 ,  G11B5/17 ,  G11B5/48 ,  G11B5/60 ,  G11B25/04 ,  G11B21/16

CPC分类号： G11B5/4826 ,  G11B5/11 ,  G11B5/17

摘要： An apparatus having a pair of magnetic transducer head assemblies for data transfer with both sides of a recording medium such as a flexible magnetic disk. One of the head assemblies is mounted via a planar flexure seat on a carriage movable radially of the medium, whereas the other head assembly is mounted via another planar flexure seat on a load arm which is hingedly mounted on the carriage for pivotal motion toward and away from the medium. At least one, preferably both, of the head assemblies has a data transfer coil such as a read/write coil at least partly, preferably wholly, disposed on that side of the flexure seat which is directed toward the recording medium. An erase coil, if any, of each head assembly may also be disposed on the same side of the flexure seat. This coil arrangement affords a significant reduction in the thickness of the apparatus.

摘要翻译： 一种具有一对磁传感器头组件的装置，用于与诸如柔性磁盘的记录介质的两侧进行数据传送。 其中一个头部组件通过平面弯曲座安装在可在介质上径向移动的滑架上，而另一个头部组件通过另一个平面弯曲座安装在负载臂上，负载臂铰接地安装在滑架上用于枢转运动朝向和远离 从媒介。 至少一个，优选两个头部组件具有数据传输线圈，例如读/写线圈，至少部分地，优选地完全地设置在柔性座的朝向记录介质的那一侧上。 每个头部组件的擦除线圈（如果有的话）也可以设置在挠性座的同一侧上。 该线圈装置显着降低了装置的厚度。

公开(公告)号：US4709285A

公开(公告)日：1987-11-24

申请号：US774337

申请日：1985-09-10

申请人： Katsuya Enami ,  Sinobu Kawamura ,  Fumio Nagase ,  Shinichi Aikawa

发明人： Katsuya Enami ,  Sinobu Kawamura ,  Fumio Nagase ,  Shinichi Aikawa

IPC分类号： G11B17/32 ,  G11B5/48 ,  G11B5/54 ,  G11B5/58 ,  G11B21/20 ,  G11B25/04 ,  G11B5/016 ,  G11B5/596

CPC分类号： G11B5/54 ,  G11B5/4826 ,  G11B5/58

摘要： An apparatus having a pair of magnetic transducer head assemblies for data transfer contact with the opposite faces of a flexible magnetic disk. One of the head assemblies has its disk engaging surface disposed at an angle to the normal plane of the magnetic disk in order to hold the disk engaging surfaces of both head assemblies in proper data transfer contact with the magnetic disk in spite of its wobbling movements during rotation. The disk engaging surface of that one head assembly slants away from the normal disk plane in a direction that can be anywhere between a radially inward direction of the magnetic disk and a tangential direction of a notional circle drawn concentrically on the magnetic disk, the tangential direction being upstream of the magnetic disk with respect to its predetermined direction of rotation. As the other head assembly is gimbaled and sprung against the slanting head assembly via the intervening magnetic disk, both head assemblies can be held in proper data transfer engagement with the disk despite its undulations in both radial and tangential directions.

摘要翻译： 一种具有一对磁传感器头组件的装置，用于与柔性磁盘的相对面进行数据传送接触。 头部组件中的一个具有与磁盘的法线平面成一定角度的盘啮合表面，以便将两个头部组件的盘接合表面保持在与磁盘适当的数据传送接触，尽管其摆动运动 回转。 该一个头部组件的盘接合表面沿着可以在磁盘的径向向内的方向和同心地在磁盘上卷取的概念圆的切线方向之间的任何方向从普通盘平面倾斜，切向方向 相对于其预定的旋转方向在磁盘的上游。 当另一个头部组件被平衡并通过中间磁盘弹簧抵靠倾斜头部组件时，两个头部组件可以保持与盘的适当数据传送接合，尽管其在径向和切向两个方向上都起伏。

公开(公告)号：US5309628A

公开(公告)日：1994-05-10

申请号：US992134

申请日：1992-12-17

申请人： Kiyoshi Fukuchi ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Takashi Numata ,  Fumio Nagase

发明人： Kiyoshi Fukuchi ,  Yoshiaki Sakai ,  Hiroshi Tsuyuguchi ,  Takashi Numata ,  Fumio Nagase

IPC分类号： G11B25/04 ,  G11B5/55 ,  G11B33/12 ,  B23P19/04

CPC分类号： G11B5/5521 ,  Y10S29/028 ,  Y10T29/49025 ,  Y10T29/53165 ,  Y10T29/53261 ,  Y10T29/53265

摘要： An assembling position-adjusting mechanism of a magnetic disk apparatus able to adjust the azimuth, radial alignment, and index of a magnetic head by adjusting a position thereof during the assembling process of a spindle motor. A positioning head movable in a direction perpendicular to a top surface of a table is provided. A plurality of positioning pins are provided on the bottom of the positioning head. Moving mechanisms are provided in the positioning head so that the bottom surface of the positioning head is movable and rotatable parallel to the top surface of the table. Each positioning pin of the positioning head is inserted into a respective positioning hole of a motor assembly so as to move the motor assembly with a movement of the positioning head so that the spindle motor of the motor assembly is at an appropriate position relative to the magnetic head of the main body of the magnetic disk apparatus.

摘要翻译： 一种磁盘装置的组装位置调节机构，其能够通过在主轴电动机的组装过程中调节其位置来调节磁头的方位角，径向取向和折射率。 提供了可在与桌子的顶面垂直的方向上移动的定位头。 多个定位销设置在定位头的底部。 移动机构设置在定位头中，使得定位头的底面能够平行于工作台的顶面移动和旋转。 定位头的每个定位销插入到马达组件的相应定位孔中，以便随着定位头的运动而使马达组件移动，使得马达组件的主轴马达相对于磁铁位于适当的位置 磁盘装置的主体的头部。

公开(公告)号：US6097576A

公开(公告)日：2000-08-01

申请号：US383658

申请日：1995-02-02

申请人： Kiyoshi Fukuchi ,  Fumio Nagase ,  Yoshiaki Sakai

发明人： Kiyoshi Fukuchi ,  Fumio Nagase ,  Yoshiaki Sakai

IPC分类号： G11B5/60 ,  G11B5/016 ,  G11B5/10 ,  G11B5/48 ,  G11B5/58 ,  G11B17/32

CPC分类号： G11B5/10 ,  G11B17/32 ,  G11B5/48 ,  G11B5/4806 ,  G11B5/4886 ,  G11B5/58 ,  G11B5/016

摘要： A miniaturized magnetic head which can reduce running torque of a disk driving motor while head-touch and penetration margin of the magnetic head remain effective. The magnetic head comprises a slider which slides on a flexible magnetic disk, a head core, integrally formed with the slider, to perform recording/reproducing of information on/from the flexible magnetic disk, and a groove, having a width of less than 0.4 mm, formed on a sliding surface of the slider, the groove extending in a tangential direction of the rotation of the flexible magnetic disk and reaching from one end of the slider to the other end of the slider.

摘要翻译： 一种小型化的磁头可以减小磁盘驱动电动机的运行扭矩，而磁头的头部接触和穿透边缘保持有效。 磁头包括在柔性磁盘上滑动的滑块，与滑块一体形成的磁头芯，用于在柔性磁盘上进行信息的记录/再现，以及宽度小于0.4的凹槽 mm，形成在滑块的滑动表面上，凹槽沿着柔性磁盘的旋转的切线方向延伸并且从滑块的一端到达滑块的另一端。

公开(公告)号：US06859426B1

公开(公告)日：2005-02-22

申请号：US09913302

申请日：2000-07-18

申请人： Toshihiro Ogawa ,  Fumio Nagase

发明人： Toshihiro Ogawa ,  Fumio Nagase

IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736

摘要： An optical disk drive unit performing write power calibration which performs recording on a given test area of an optical disk by changing a write power and sets an optimum write power based on characteristic values obtained from reproduced signals from the given test area includes average calculation means for dividing the given test area into a plurality of areas, performing recording on the areas by changing the write power equally, and calculating averages of characteristic values obtained from reproduced signals from the areas, and optimum write power setting means for setting the optimum write power based on the averages of the characteristic values calculated by the average calculation means. Thereby, with the averages of the characteristic values obtained from the areas of the optical disk which areas are in angularly different positions, the effects of the periodic variation of the optical disk can be reduced and the optimum write power can be set with good accuracy.

摘要翻译： 一种执行写入功率校准的光盘驱动单元，其通过改变写入功率在光盘的给定测试区域上进行记录，并且基于从给定测试区域的再现信号获得的特征值来设置最佳写入功率，包括平均计算装置 将给定的测试区域划分成多个区域，通过等效地改变写入功率来对区域进行记录，以及计算从区域的再现信号获得的特征值的平均值，以及用于基于最佳写入功率设置最佳写入功率设置装置 对由平均计算装置计算的特征值的平均值。 因此，利用从光盘的各个区域的角度不同的位置获得的特征值的平均值，可以降低光盘的周期性变化的影响，并且可以以高精度设置最佳写入功率。

公开(公告)号：US5473487A

公开(公告)日：1995-12-05

申请号：US243298

申请日：1994-05-17

申请人： Fumio Nagase

发明人： Fumio Nagase

IPC分类号： G11B5/48 ,  G11B17/32 ,  G11B21/20

CPC分类号： G11B5/4826 ,  G11B17/32

摘要： A flexure seat for gimbaling a magnetic head is fabricated from sheet steel, comprising a central portion to which the head is to be mounted, an intermediate portion of annular shape around the central portion, and an outer portion of semiannular shape around the intermediate portion. The central portion is joined to the intermediate portion via a first pair of bridge portions in a first direction, and the intermediate portion to the outer portion via a second pair of bridge portions aligned in a second direction at right angles with the first direction. In order to suppress the unwanted oscillation, and prevent the resonance, of the central portion, a pair of dampers, as of silicone elastomer, are formed across the spacing between the central and intermediate portions, in positions on both sides of the central portion and in alignment with the second pair of bridge portions. The damper material is applied in fluid form and solidified by exposure to light. Any excessive spreading of the damper material before solidification is prevented by providing a pair of tapering tongues projecting from at least either of the central portion and the intermediate portion toward, and terminating short of, the other.

摘要翻译： 一种用于使磁头伸展的弯曲座由钢板制成，包括一个中心部分，头部要安装在该中心部分上，围绕中心部分形成环形中间部分，以及围绕中间部分的半环形外部部分。 中心部分经由第一对桥接部分沿第一方向连接到中间部分，并且经由第二对桥接部分将中间部分连接到与第一方向成直角的第二方向上的第二对桥接部分。 为了抑制中心部分的不希望的振荡并防止共振，在中心部分和中间部分之间的间隔处，在中心部分的两侧的位置上形成一对阻挡件，如硅氧烷弹性体，并且 与第二对桥接部分对准。 阻尼材料以流体形式施加并通过曝光固化。 通过设置从中心部分和中间部分中的至少一个突出的一对锥形舌片，并且终止于另一个，阻止了固化之前阻尼材料的任何过度扩散。

公开(公告)号：USD346160S

公开(公告)日：1994-04-19

申请号：US789157

申请日：1991-11-06

申请人： Fumio Nagase ,  Kazuhiko Inoue ,  Hidetoshi Kabasawa

设计人： Fumio Nagase ,  Kazuhiko Inoue ,  Hidetoshi Kabasawa