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    • 3. 发明授权
    • Magnetic head device
    • 磁头装置
    • US06339519B1
    • 2002-01-15
    • US09437680
    • 1999-11-10
    • Izumi NomuraHaruyuki MoritaMasashi ShiraishiMitsuyoshi KawaiTakeshi Wada
    • Izumi NomuraHaruyuki MoritaMasashi ShiraishiMitsuyoshi KawaiTakeshi Wada
    • G11B560
    • G11B5/4853G11B5/486
    • There is disclosed a magnetic head device in which a head IC chip may be located relatively closer to a magnetic head and a thermal effect may be controlled to be within a range of acceptable degree. Said magnetic head device comprises a head slider having a magnetic head, a suspension member which is made of thin resilient material and supports the head slider at one end thereof, and a head IC chip, wherein the suspension member is attached to other member at the other end thereof. The IC chip is mounted on the suspension member. When the IC chip is selected to have appropriate disc side area and is mounted on the suspension member, the temperature of the IC chip itself may be maintained within a range of acceptable degree and that of the magnetic head may be also kept to be lower. When the electric power consumption of the IC chip is equal to or less than 410 mW, the disc side area thereof should be equal to or more than 1.1 mm2. The IC chip is mounted on a surface of the suspension member at a side facing to the disc at a position where a relative linear velocity equal to or more than 25 m/sec is generated with respect to said disc.
    • 公开了一种磁头装置,其中头部IC芯片可以相对靠近磁头定位,并且可以将热效应控制在可接受的程度的范围内。 所述磁头装置包括具有磁头的磁头滑动器,由薄弹性材料制成的悬架构件,并在其一端支撑磁头滑块,以及磁头IC芯片,其中所述悬挂构件在所述磁头滑块 的另一端。 IC芯片安装在悬挂构件上。 当IC芯片被选择为具有适当的盘侧面积并安装在悬挂构件上时,IC芯片本身的温度可以保持在可接受的程度的范围内,并且磁头的温度也可以保持较低。 当IC芯片的电力消耗等于或小于410mW时,其盘侧面积应等于或大于1.1mm 2。 IC芯片在相对于所述盘产生相对线速度等于或大于25m / sec的位置处,在面对盘的一侧安装在悬挂构件的表面上。
    • 4. 发明授权
    • Performance test method of head gimgal assembly with precise positioning actuator
    • 具有精确定位执行器的头部吉米马尔组件的性能测试方法
    • US06989949B2
    • 2006-01-24
    • US10346056
    • 2003-01-17
    • Tsz Lok ChengTamon KasajimaMasashi ShiraishiKatsuhiko TomitaTakashi HondaTakeshi Wada
    • Tsz Lok ChengTamon KasajimaMasashi ShiraishiKatsuhiko TomitaTakashi HondaTakeshi Wada
    • G11B27/36
    • G11B5/455G11B2005/001
    • A method of testing a performance of the HGA has a step of writing information from the at least one thin-film magnetic head element onto a magnetic disk with driving the actuator for displacement by applying an alternating drive signal to the actuator, a step of reading out the information of at least one rotation of the magnetic disk by the at least one thin-film magnetic head element without driving the actuator for displacement, a step of storing the information read-out from the magnetic disk as a read-out information along a disk-rotating direction, a step of moving the HGA toward an off-track direction by a predetermined distance, a step of repeatedly executing the reading, storing and moving steps to obtain two-dimensional read-out information along the disk-rotating direction and the off-track direction, and a step of determining, from the two-dimensional read-out information, an off-track position where the read-out information becomes maximum at each position along the disk-rotating direction, the determined off-track positions being recognized as displaced positions of the actuator in response to the applied alternating drive signal.
    • 测试HGA的性能的方法具有将信息从至少一个薄膜磁头元件写入到磁盘上的步骤,通过向致动器施加交替的驱动信号来驱动用于位移的致动器,读取步骤 通过所述至少一个薄膜磁头元件输出磁盘的至少一圈的信息,而不驱动用于移位的致动器;将从磁盘读出的信息作为读出信息存储的步骤 盘旋转方向,将偏移方向移动到离轨道方向预定距离的步骤;重复执行读取,存储和移动步骤以沿盘旋转方向获得二维读出信息的步骤 和偏离磁道方向的步骤,以及从二维读出信息确定读出信息在沿磁盘的每个位置处变为最大的偏离磁道位置的步骤, 响应于所施加的交替驱动信号,所确定的离轨位置被识别为致动器的位移位置。