Dual mask process for making second pole piece layer of write head with high resolution narrow track width second pole tip
    122.
    发明授权
    Dual mask process for making second pole piece layer of write head with high resolution narrow track width second pole tip 失效
    用于制作具有高分辨率窄轨道宽度的第二极尖的写头的第二极片层的双掩模处理

    公开(公告)号:US06286200B1

    公开(公告)日:2001-09-11

    申请号:US09360863

    申请日:1999-07-23

    Abstract: A method of making a second pole piece layer that has a yoke portion between a pole tip portion and a back gap portion comprising the steps of forming a first photoresist layer that is sensitive to a first bandwidth of light, forming a second photoresist layer on the first photoresist layer that is sensitive to a second bandwidth of light that is different from the first bandwidth of light, after forming the first and second photoresist layers, photopatterning the second photoresist layer with the second bandwidth of light to provide an opening at pole tip, yoke and back gap sites wherein the pole tip, yoke and back gap sites define perimeters for the pole tip, yoke and back gap portions respectively, after photopatterning the second photoresist layer, photopatterning the first photoresist layer with the first bandwidth of light to provide openings at the pole tip, yoke and back gap sites and then plating the pole tip, yoke and back gap portions of the second pole piece layer in the openings of the first and second photoresist layers.

    Abstract translation: 一种制造在极尖部分和后间隙部分之间具有轭部分的第二极片层的方法,包括以下步骤:形成对第一带宽光敏感的第一光致抗蚀剂层,在第一光致抗蚀剂层上形成第二光致抗蚀剂层 在形成第一和第二光致抗蚀剂层之后,在形成第一和第二光致抗蚀剂层之后,对与第一带宽光不同的第二带宽敏感的第一光致抗蚀剂层,以第二带宽光对第二光致抗蚀剂层进行光图案化以在极尖提供开口, 磁轭和后间隙位置,其中磁极末端,磁轭和后间隙位置分别在对第二光致抗蚀剂层进行图案化之后分别限定极尖,磁轭和后间隙部分的周长,对第一光致抗蚀剂层进行第一带宽光图案化以提供开口 在极尖,磁轭和后隙位置,然后电镀第二极片层的极尖,磁轭和后间隙部分 第一和第二光致抗蚀剂层的结合。

    COMPENSATION FOR VIBRATION IN A DATA STORAGE SYSTEM
    130.
    发明申请
    COMPENSATION FOR VIBRATION IN A DATA STORAGE SYSTEM 有权
    数据存储系统中的振动补偿

    公开(公告)号:US20130003219A1

    公开(公告)日:2013-01-03

    申请号:US13173841

    申请日:2011-06-30

    CPC classification number: G11B19/042 G11B5/5582 G11B5/59694

    Abstract: A plurality of sensors are used to sense disturbances in a data storage system. An adaptive gain component is associated with each of the sensors and provides a gain for each of the sensor signals. The gain of each sensor signal is adapted, individually, based on a correlation of each given sensor signal to the position error signal. This adaptation produces a position correction signal. The position correction signal is applied to a position signal that is used to position the reading and writing components and the storage medium relative to one another. This compensates for both rotary and linear vibration disturbances at the same time.

    Abstract translation: 多个传感器用于感测数据存储系统中的干扰。 自适应增益分量与每个传感器相关联,并为每个传感器信号提供增益。 每个传感器信号的增益分别基于每个给定传感器信号与位置误差信号的相关性来适应。 该适配产生位置校正信号。 位置校正信号被施加到用于将读取和写入部件和存储介质相对于彼此定位的位置信号。 这可以同时补偿旋转和线性振动干扰。

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