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1. 发明授权

US06490115B1 Error recovery in unit using GMR sensor 失效
标题翻译：使用GMR传感器进行单位误差恢复
公开(公告)号：US06490115B1
公开(公告)日：2002-12-03
申请号：US09218724
申请日：1998-12-22
申请人： Hiroaki Suzuki , Koji Kurachi , Katsumi Suda , Hideo Asano , Kenji Okada , Makoto Takase , Akira Kibashi , Hiromi Nishimiya , Takao Matsui , Tatsuya Endo , Kenji Kuroki
发明人： Hiroaki Suzuki , Koji Kurachi , Katsumi Suda , Hideo Asano , Kenji Okada , Makoto Takase , Akira Kibashi , Hiromi Nishimiya , Takao Matsui , Tatsuya Endo , Kenji Kuroki
IPC分类号： G11B2102
CPC分类号： G11B5/09 , G11B19/04
摘要： A method and apparatus for recovering from operation errors arising in an information recording and reproducing unit using a head with a GMR sensor is described. The read and write operations of the unit comprise executing a first error recovery procedure for recovering the operation error, executing a first GMR evaluation procedure for evaluating the performance of the GMR sensor when the operation error cannot be recovered by the first error recovery procedure, and applying a resetting pulse to the GMR sensor in accordance with the first GMR evaluation procedure.
摘要翻译：描述了使用具有GMR传感器的头的信息记录和再现单元中出现的操作错误恢复的方法和装置。该单元的读写操作包括执行用于恢复操作错误的第一错误恢复过程，当通过第一错误恢复过程无法恢复操作错误时，执行用于评估GMR传感器的性能的第一GMR评估过程，以及根据第一GMR评估程序将复位脉冲施加到GMR传感器。

2. 发明授权

US06275028B1 Methods for initializing and/or resetting GMR heads by applying oppositely directed magnetic fields 失效
标题翻译：通过施加相反方向的磁场来初始化和/或复位GMR磁头的方法
公开(公告)号：US06275028B1
公开(公告)日：2001-08-14
申请号：US09220808
申请日：1998-12-23
申请人： Takao Matsui , Tatsuya Endo , Hiroaki Suzuki , Kenji Kuroki , Katsushi Yamaguchi , Hideo Asano
发明人： Takao Matsui , Tatsuya Endo , Hiroaki Suzuki , Kenji Kuroki , Katsushi Yamaguchi , Hideo Asano
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/3166 , G11B5/3189 , G11B5/455 , G11B5/465 , G11B5/4806 , G11B2005/0008 , G11B2005/0016 , G11B2005/3996 , Y10T29/49034
摘要： In accordance with the present invention, the initialization for orienting the magnetized directions of the free layers of GMR heads (mounted on the diagonally shaded surface of sliders 14) by an external magnetic field is again executed also for the opposite direction, thereby to increase the yield of the GMR heads. Further, it is determined whether the magnetized direction of the pinned layer of GMR heads can be once reversed to the opposite direction, thereby to select damaged GMR heads at an early stage. Then, by performing a reset while performing a quasi-static test for seeing the read back response of the GMR head after restoring the magnetized direction of the pinned layer to a positive rotation, a safe and efficient reset is executed. The reset can be executed not only by applying only a pulse, but also while providing an external magnetic field in the pinning direction, or only by giving a high magnetic field. A tool 500 can be commonly used for the initialization, reset, or read back response through each process level. For the quasi-static test, coils 531, 532, and 533 are selectively used as Helmholz coils.
摘要翻译：根据本发明，用于通过外部磁场定向GMR磁头自由层（安装在滑块14的斜面阴影表面上）的磁化方向的初始化也对于相反方向也被执行，从而增加产量的GMR头。此外，确定GMR磁头的被钉扎层的磁化方向是否可以反向一个相反的方向，从而在早期阶段选择损坏的GMR磁头。然后，通过在将被钉扎层的磁化方向恢复到正旋转之后执行用于观察GMR头的回读响应的准静态测试执行复位，执行安全且有效的复位。该复位不仅可以通过仅施加脉冲而且可以在钉扎方向上提供外部磁场，或者仅通过施加高磁场来执行。工具500可以通常用于通过每个处理级别的初始化，复位或回读响应。对于准静态测试，线圈531,532和533被选择性地用作Helmholz线圈。

3. 发明授权

US5615063A Magnetoresistive head bias current switching based on skew angle 失效
标题翻译：基于偏斜角的磁阻头偏置电流切换
公开(公告)号：US5615063A
公开(公告)日：1997-03-25
申请号：US445513
申请日：1995-05-22
申请人： Kenji Kuroki , Takao Matsui
发明人： Kenji Kuroki , Takao Matsui
IPC分类号： G11B5/39 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/55 , G11B5/596 , G11B5/03
CPC分类号： G11B5/59683 , G11B5/012 , G11B2005/0018 , G11B5/39 , G11B5/553
摘要： A controller 40 of an HDC 30 is connected to a drive 28, and an arm is rotated through a predetermined angle. A magnetic head 20 on the arm comprises a recording element and a reproduction element. A bias current is supplied to the magnetic head 20 from the controller 40 through a driver 36A and a switching circuit 32A, and the magnetic field of the disk 18A is detected in a detector 38A through a switching circuit 32A. The switching circuit 32A inverts the polarity of a current applied to the magnetic head 20A, by a signal from the controller 40 corresponding to a skew angle. Accordingly, the direction of the bias magnetic field is changed, the effective sensitivity position of the reproduction element approaches the recording element, and off-track can be reduced.
摘要翻译： HDC 30的控制器40连接到驱动器28，并且臂旋转预定角度。臂上的磁头20包括记录元件和再现元件。通过驱动器36A和开关电路32A从控制器40向磁头20提供偏置电流，并且通过开关电路32A在检测器38A中检测盘18A的磁场。开关电路32A通过来自控制器40的对应于偏斜角的信号来反转施加到磁头20A的电流的极性。因此，偏置磁场的方向改变，再现元件的有效灵敏度位置接近记录元件，并且偏离磁道可以减小。

4. 发明授权

US08837994B2 Method for controlling image forming apparatus, and image forming apparatus 有权
标题翻译：用于控制图像形成装置的方法和图像形成装置
公开(公告)号：US08837994B2
公开(公告)日：2014-09-16
申请号：US13327629
申请日：2011-12-15
申请人： Kenji Kuroki , Hiroto Nishihara , Hiroyuki Eda , Hideyuki Ikegami , Tsuyoshi Shiga
发明人： Kenji Kuroki , Hiroto Nishihara , Hiroyuki Eda , Hideyuki Ikegami , Tsuyoshi Shiga
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G2215/0129 , G03G2215/0161
摘要： If any of a plurality of conditions is satisfied, an image forming apparatus having a plurality of image forming units that form images on an intermediate transfer member in a superimposed manner detects, using a pattern detection sensor, the amount of color misregistration of the images formed by the plurality of image forming units on the intermediate transfer member and corrects the color misregistration of the images formed by the plurality of image forming units in accordance with the amount of color misregistration that is smaller than a color misregistration correction tolerance, which varies depending on the plurality of conditions, and that has been detected by the pattern detection sensor.
摘要翻译：如果满足多种条件中的任何一种，则具有多个图像形成单元的图像形成装置以叠加的方式在中间转印部件上形成图像，使用图案检测传感器检测形成的图像的颜色重合失调量通过中间转印部件上的多个图像形成单元，并且根据颜色重合不足的颜色对准量校正由多个图像形成单元形成的图像的颜色不对齐，该颜色对准不足于根据多个条件，并且已经由图案检测传感器检测到。

5. 发明授权

US08427785B2 Head-slider including a low-surface-energy film that prevents lubricant accumulation, head-arm assembly including the head-slider, and hard-disk drive including the head-arm assembly 有权
标题翻译：头部滑块包括防止润滑剂积聚的低表面能膜，包括头部滑块的头臂组件和包括头臂组件的硬盘驱动器
公开(公告)号：US08427785B2
公开(公告)日：2013-04-23
申请号：US12639013
申请日：2009-12-16
申请人： Yoshihiko Ooeda , Kenji Kuroki , Katsuhide Tanaka
发明人： Yoshihiko Ooeda , Kenji Kuroki , Katsuhide Tanaka
IPC分类号： G11B5/60
CPC分类号： G11B5/6005
摘要： The head-slider is configured to receive an air-stream produced by rotation of a magnetic-recording disk and is configured to fly in proximity with a recording surface of the magnetic-recording disk. The head-slider includes a trailing edge on an outflow side of the air-stream, and a disk-facing surface that is configured to face the recording surface of the magnetic-recording disk. A low-surface-energy film is disposed on a portion of a trailing-edge side of the head-slider that is in contact with a boundary between the trailing edge and the disk-facing surface. The low-surface-energy film has a lower surface energy than other portions of the trailing-edge side where the low-surface-energy film is not disposed.
摘要翻译：头部滑块被配置为接收由磁记录盘的旋转产生的空气流，并且被配置为在磁记录盘的记录表面附近飞行。头部滑动器包括在空气流的流出侧上的后缘和构造成面对磁记录盘的记录表面的面向盘的表面。低表面能膜被设置在与后缘和面向盘的表面之间的边界接触的头部滑块的后缘侧的一部分上。低表面能膜比不设置低表面能膜的后缘侧的其它部分具有较低的表面能。

6. 发明申请

US20110102933A1 DISK DRIVE AND METHOD FOR MEASURING CLEARANCE CHANGE IN THE DISK DRIVE 有权
标题翻译：磁盘驱动器和用于测量磁盘驱动器中的间隙变化的方法
公开(公告)号：US20110102933A1
公开(公告)日：2011-05-05
申请号：US12558435
申请日：2009-09-11
申请人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
发明人： Masayuki Kurita , Kenji Kuroki , Kenichi Kuramoto , Yoshihiko Maeda
IPC分类号： G11B27/36 , G11B21/02
CPC分类号： G11B5/6029 , G11B5/6064
摘要： A method for measuring a change of a clearance between a head and a disk. The method includes reading a preliminarily written data string for clearance measurement on a disk to obtain a first measured value corresponding to a clearance, and writing a new data string for deterioration check onto the disk and reading the data string for deterioration check to obtain a second measured value corresponding to the clearance. The method also includes determining a deterioration of the data string for clearance measurement from a difference between the first measured value and the second measured value, measuring a clearance change using the data string for clearance measurement by a normal operation if the determination is that the data string for clearance measurement has not deteriorated, and measuring a clearance change by an operation different operation if the determination is that the data string for clearance measurement has deteriorated.
摘要翻译：一种用于测量磁头和磁盘之间的间隙变化的方法。该方法包括在盘上读取用于间隙测量的预先写入的数据串，以获得与间隙相对应的第一测量值，并将用于劣化检查的新数据串写入盘并读取用于劣化检查的数据串，以获得第二测量值对应于间隙。该方法还包括从第一测量值和第二测量值之间的差异确定用于间隙测量的数据串的劣化，如果确定数据是通过正常操作，则使用用于间隙测量的数据串来测量间隙变化用于间隙测量的琴弦没有劣化，并且如果确定用于间隙测量的数据串已经劣化，则通过操作不同的操作来测量间隙变化。

7. 发明申请

US20100092193A1 METHOD FOR CONTROLLING IMAGE FORMING APPARATUS 失效
标题翻译：控制图像形成装置的方法
公开(公告)号：US20100092193A1
公开(公告)日：2010-04-15
申请号：US12641026
申请日：2009-12-17
申请人： Takashi Fujimori , Kenji Kuroki , Hiroyuki Eda
发明人： Takashi Fujimori , Kenji Kuroki , Hiroyuki Eda
IPC分类号： G03G15/043
CPC分类号： G02B26/127 , G03G15/50 , Y10S359/90
摘要： An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.
摘要翻译：提供一种图像形成装置，其在开始工作之前预先旋转多面镜驱动电动机，并且通过使用包括多面镜驱动电动机的光学扫描单元形成潜像。图像形成装置包括：控制单元，其被配置为执行控制，使得在确定先前旋转开始之前的每个彩色调色剂的存在或不存在时，如果确定任何一个彩色调色剂不存在，则仅预先旋转对应于黑色调色剂的多面镜驱动马达。

8. 发明申请

US20100091350A1 METHOD FOR CONTROLLING IMAGE FORMING APPARATUS 有权
公开(公告)号：US20100091350A1
公开(公告)日：2010-04-15
申请号：US12640978
申请日：2009-12-17
申请人： Takashi Fujimori , Kenji Kuroki , Hiroyuki Eda
发明人： Takashi Fujimori , Kenji Kuroki , Hiroyuki Eda
IPC分类号： G02B26/12 , G03G15/06
CPC分类号： G02B26/127 , G03G15/50 , Y10S359/90
摘要： An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.

9. 发明授权

US07551389B2 Disk drive and method of retracting head thereof 失效
标题翻译：磁盘驱动器及其回缩头的方法
公开(公告)号：US07551389B2
公开(公告)日：2009-06-23
申请号：US11975516
申请日：2007-10-18
申请人： Shingo Tsuda , Kenji Kuroki , Toshiroh Unoki , Minoru Hashimoto
发明人： Shingo Tsuda , Kenji Kuroki , Toshiroh Unoki , Minoru Hashimoto
IPC分类号： G11B21/02
CPC分类号： G11B5/54 , G11B21/12
摘要： Embodiments of the present invention relate to retracting a magnetic head of a disk drive device to a retract position in accordance with a fall state, and to suppressing the performance degradation due to erroneous fall determinations as well as occurrence of damage by a head-disk crash. According to one embodiment of the present invention, in a Hard Disk Drive (HDD), a servo controller moves a head slider to a cylinder at the side of a ramp at a predetermined timing that a fall determiner determines that it is falling and an unload controller starts an unload process. This shortens the time between determination by the fall determiner that it is falling to retraction of the head slider to the retract position. Furthermore, it prevents increase of the erroneous determinations by relaxing the fall determination condition for safety. Also, it shortens the time that the head slider returns to the initial position before the seek in case that it is not determined that it is falling.
摘要翻译：本发明的实施例涉及根据跌倒状态将盘驱动装置的磁头回缩到缩回位置，并且抑制由于错误的下降判定引起的性能下降以及头盘崩溃的损坏的发生。根据本发明的一个实施例，在硬盘驱动器（HDD）中，伺服控制器在预定定时将磁头滑块移动到斜坡侧的气缸，以便下降确定器确定其正在下降并且卸载控制器启动卸载过程。这缩短了下降确定器确定其下降到头部滑块缩回到缩回位置之间的时间。此外，通过放松用于安全的跌倒判定条件，防止了错误判定的增加。而且，如果没有确定它正在下降，它会缩短磁头滑块在搜索之前返回到初始位置的时间。

10. 发明授权

US07245457B2 Magnetic disk drive using femto slider and having predetermined linear velocity and gram load configuration 失效
标题翻译：使用毫微微滑块的磁盘驱动器具有预定的线速度和克负载配置
公开(公告)号：US07245457B2
公开(公告)日：2007-07-17
申请号：US10902821
申请日：2004-07-30
申请人： Kenji Kuroki , Taichi Nakamura , Akira Tokizono , Akihiro Sera
发明人： Kenji Kuroki , Taichi Nakamura , Akira Tokizono , Akihiro Sera
IPC分类号： G11B5/48 , G11B17/02 , G11B5/60 , G11B5/54
CPC分类号： G11B5/4826 , G11B5/4833
摘要： A magnetic disk drive includes a magnetic disk and a femto slider. The magnetic disk has a minimum track linear velocity of 1 to 5 m/s. In one embodiment, the magnetic disk drive includes a negative pressure type femto slider and adopts a load/unload method. A gram load “GL” of a head suspension assembly HSA is set at a value exceeding about 3 mN and smaller than about 15 mN and a pitch static attitude “PSA” (deg) and pitch stiffness “Kp” (Nm/deg) satisfy the expression ((PSA×Kp)/GL)
摘要翻译：磁盘驱动器包括磁盘和毫微微滑块。磁盘具有1至5m / s的最小轨道线速度。在一个实施例中，磁盘驱动器包括负压型毫微微滑块，并采用加载/卸载方法。磁头悬挂组件HSA的克负载“GL”被设定为超过约3mN且小于约15mN的值，并且俯仰静态姿态“PSA”（deg）和俯仰刚度“Kp”（Nm / deg）满足表达式（（PSAxKp）/ GL）<0.25mm。结果，可以防止毫微微滑块假定称为双稳态高度的元稳定飞越高状态。此外，通过将俯仰静止姿态“PSA”设定为大于0度的值，可以防止滑块与称为半稳定阻力的磁盘表面发生元稳定接触的状态。

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