利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

188 条记录 (耗时 0.023 秒)

    Writer and reader arrangements for shingled writing
    1.
    发明授权
    Writer and reader arrangements for shingled writing 有权
    作家和读者安排书写的书写

    公开(公告)号：US08134802B2

    公开(公告)日：2012-03-13

    申请号：US12589829

    申请日：2009-10-29

    申请人： Zhigang Bai ,  Yan Wu ,  Kenichi Takano

    发明人： Zhigang Bai ,  Yan Wu ,  Kenichi Takano

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3967 ,  G11B2005/0005

    摘要： A sloped reader is disclosed that reduces skew between reader and written transitions in shingled writing. The reader is formed between surfaces of S1 and S2 shields that are aligned parallel to the sloped reader. A PMR writer is described that straightens transition curvature and reduces signal-to-noise ratio in shingled writing. In one embodiment, a symmetrical writer with a bowed trailing edge where two corners have a greater pole height than a center portion may be used for either right corner or left corner shingled writing. In a second embodiment, an asymmetrical writer is formed with a straight and sloped trailing edge such that the write corner has a greater pole height than the opposite corner on the trailing edge. The bowed angle in the symmetrical writer and slope angle in the asymmetrical writer is between 5 and 45 degrees and preferably between 10 and 30 degrees.

    摘要翻译： 公开了一种倾斜的读取器，其减少读写器与书写的转换之间的偏差。 读取器形成在平行于倾斜的读取器的S1和S2屏蔽的表面之间。 描述了一种PMR写入器，用于矫正转换曲率并降低带状写入中的信噪比。 在一个实施例中，具有弓形后缘的对称写入器，其中两个角具有比中心部分更大的极高度，可以用于右拐角或左角贴图写入。 在第二实施例中，非对称写入器形成为具有直的和倾斜的后缘，使得写入角具有比后缘上的相对角更大的极高度。 对称写入器中的弯曲角度和不对称写入器中的倾斜角度在5度到45度之间，最好在10度到30度之间。

    Writer and reader arrangements for shingled writing
    2.
    发明申请
    Writer and reader arrangements for shingled writing 有权
    作家和读者安排书写的书写

    公开(公告)号：US20110102942A1

    公开(公告)日：2011-05-05

    申请号：US12589829

    申请日：2009-10-29

    申请人： Zhigang Bai ,  Yan Wu ,  Kenichi Takano

    发明人： Zhigang Bai ,  Yan Wu ,  Kenichi Takano

    IPC分类号： G11B5/127 ,  B44C1/22

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3967 ,  G11B2005/0005

    摘要： A sloped reader is disclosed that reduces skew between reader and written transitions in shingled writing. The reader is formed between surfaces of S1 and S2 shields that are aligned parallel to the sloped reader. A PMR writer is described that straightens transition curvature and reduces signal-to-noise ratio in shingled writing. In one embodiment, a symmetrical writer with a bowed trailing edge where two corners have a greater pole height than a center portion may be used for either right corner or left corner shingled writing. In a second embodiment, an asymmetrical writer is formed with a straight and sloped trailing edge such that the write corner has a greater pole height than the opposite corner on the trailing edge. The bowed angle in the symmetrical writer and slope angle in the asymmetrical writer is between 5 and 45 degrees and preferably between 10 and 30 degrees.

    摘要翻译： 公开了一种倾斜的读取器，其减少了读写器与书写的转换之间的偏差。 读取器形成在平行于倾斜的读取器的S1和S2屏蔽的表面之间。 描述了一种PMR写入器，用于矫正转换曲率并降低带状写入中的信噪比。 在一个实施例中，具有弓形后缘的对称写入器，其中两个角具有比中心部分更大的极高度，可以用于右拐角或左角贴图写入。 在第二实施例中，非对称写入器形成为具有直的和倾斜的后缘，使得写入角具有比后缘上的相对角更大的极高度。 对称写入器中的弯曲角度和不对称写入器中的倾斜角度在5度到45度之间，最好在10度到30度之间。

    Method of forming a PMR writer device with multi-level tapered write pole
    3.
    发明授权
    Method of forming a PMR writer device with multi-level tapered write pole 有权
    用多级锥形写柱形成PMR写入器的方法

    公开(公告)号：US09105287B2

    公开(公告)日：2015-08-11

    申请号：US13608308

    申请日：2012-09-10

    申请人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    发明人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    IPC分类号： G11B5/127 ,  G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/398 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3186 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49048

    摘要： A method of fabricating a perpendicular magnetic recording (PMR) head with a multi-level tapered write pole which creates an efficient channeling of magnetic flux to the pole tip. A tapered bottom yoke is first formed in an etched substrate and a write pole is formed on the tapered bottom yoke. The write pole comprises a main pole with a tapered tip. A tapered top yoke is then formed on the write pole and symmetrically positioned relative to the bottom yoke. The edge of each yoke is recessed from the ABS of the tapered tip, giving the write pole a stepped profile. The tapered tip can be two sloped surfaces that are symmetric about a mid-plane of the main pole or a single sloped edge on the leading side or the trailing side of the pole.

    摘要翻译： 一种制造具有多级锥形写磁极的垂直磁记录（PMR）磁头的方法，其产生磁极到极尖的有效沟道。 首先在蚀刻的衬底中形成锥形底部磁轭，并且在锥形底部磁轭上形成写入磁极。 写入极包括具有锥形尖端的主极。 然后，锥形顶部磁轭形成在写入磁极上并相对于底部磁轭对称地定位。 每个轭的边缘从锥形尖端的ABS凹入，给写极一个阶梯轮廓。 锥形尖端可以是关于主极的中间平面对称的两个倾斜表面或在极的前侧或后侧的单个倾斜边缘。

    PMR writer device with multi-level tapered write pole
    4.
    发明授权
    PMR writer device with multi-level tapered write pole 有权
    PMR写入器，具有多级锥形写入极

    公开(公告)号：US08670212B2

    公开(公告)日：2014-03-11

    申请号：US13608321

    申请日：2012-09-10

    申请人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    发明人： Zhigang Bai ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    IPC分类号： G11B5/31

    CPC分类号： G11B5/398 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3183 ,  G11B5/3186 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49044 ,  Y10T29/49048

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a multi-level tapered write pole. The write pole comprises a main pole with a tapered tip on a leading edge or a trailing edge, on which is formed at least one yoke that has a tapered edge. The edge of the yoke is recessed from the ABS of the main pole, giving the head a stepped profile. The yoke can be a single yoke formed on one side of the main pole or it can be two yokes formed on both the leading and trailing sides of the main pole. The write pole structure creates an efficient channeling of magnetic flux to the ABS surface of the pole tip which produces magnetic recording field at high area densities.

    摘要翻译： 垂直磁记录（PMR）头用多级锥形写柱制造。 写极包括在前缘或后缘具有锥形尖端的主极，在其上形成有至少一个具有锥形边缘的轭。 轭的边缘从主极的ABS凹入，使头部呈阶梯状。 轭可以是形成在主极的一侧上的单个磁轭，或者它可以是形成在主极的前侧和后侧的两个轭。 写磁极结构产生磁通量到磁极尖端的ABS表面的有效的通道，其产生高区域密度的磁记录场。

    Writer shields with modified shapes for reduced flux shunting
    7.
    发明授权
    Writer shields with modified shapes for reduced flux shunting 有权
    作者盾牌具有改进的形状，用于减少通量分流

    公开(公告)号：US08542461B2

    公开(公告)日：2013-09-24

    申请号：US12806803

    申请日：2010-08-20

    申请人： Zhigang Bai ,  Moris Dovek ,  Yan Wu

    发明人： Zhigang Bai ,  Moris Dovek ,  Yan Wu

    IPC分类号： G11B5/147 ,  G11B5/187

    CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/312 ,  G11B5/3146

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a configuration of leading edge shields and trailing edge shields that reduce the leakage of flux between the main pole and the shields. The reduction of leakage is achieved by eliminating the sharp 90° corner between the backside surfaces of the shields and the surfaces adjacent to the main pole. In one embodiment the corner is replaced by two successive acute angles, in another embodiment it is replaced by a rounded surface. In a final embodiment, leakage between the pole and trailing edge shield is achieved by shortening the length of the write gap by forming the shield with a double taper.

    摘要翻译： 垂直磁记录（PMR）头被制造成具有前缘屏蔽和后缘屏蔽的结构，其减小主极和屏蔽之间的通量泄漏。 通过消除屏蔽的背面和与主极相邻的表面之间的尖锐的90°角来实现泄漏的减少。 在一个实施例中，角部被两个连续的锐角取代，在另一个实施例中，它被圆形表面所代替。 在最终实施例中，通过用双锥形形成屏蔽来缩短写入间隙的长度来实现极和后缘屏蔽之间的泄漏。

    PMR write with flux choking area
    8.
    发明授权
    PMR write with flux choking area 有权

    公开(公告)号：US08085498B2

    公开(公告)日：2011-12-27

    申请号：US12586249

    申请日：2009-09-17

    申请人： Zhigang Bai ,  Yue Liu ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    发明人： Zhigang Bai ,  Yue Liu ,  Kowang Liu ,  Yan Wu ,  Moris Dovek

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3163

    摘要： A PMR writer having a trailing shield structure is disclosed in which a flux choking layer (FCL) formed adjacent to the ABS provides a means to limit the amount of flux flowing from the trailing shield to a first write shield (WS1) near the write pole tip thereby significantly reducing adjacent track erasure. The FCL has a substantially smaller thickness than a top section of the trailing shield to which it is attached along a side opposite the ABS. As a result, pole tip protrusion is reduced compared to prior art PMR writers. The FCL contacts a trailing side of WS1 at the ABS and one or both of the trailing sides of the WS1 and FCL may be tapered or perpendicular with respect to the ABS. The top trailing shield section, FCL, and WS1 may be comprised of NiFe, CoFe, CoFeNi, or alloys thereof.

    External field robustness of read/write head shields
    9.
    发明申请
    External field robustness of read/write head shields 有权
    读/写头屏蔽的外部场强鲁棒性

    公开(公告)号：US20110097602A1

    公开(公告)日：2011-04-28

    申请号：US12589598

    申请日：2009-10-26

    申请人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

    发明人： Zhigang Bai ,  Yuchen Zhou ,  Joe Smyth ,  Moris Dovek ,  Yan Wu

    IPC分类号： G11B5/33 ,  B44C1/22

    CPC分类号： G11B5/1278 ,  G11B5/315 ,  G11B5/6011 ,  Y10T428/1171

    摘要： An improved magnetic shield for a perpendicular magnetic write head is disclosed. Its main feature is a pair of tabs at the shield's bottom corners. Said tabs are significantly wider at their point of attachment to the shield than further away from the shield. The end portions of each tab slope upwards (away from the ABS) at an angle of about ten degrees. A process for manufacturing the shield is also disclosed.

    摘要翻译： 公开了用于垂直磁写头的改进的磁屏蔽。 它的主要特征是盾牌底角上的一对标签。 所述突片在其远离屏蔽件的位置处与屏蔽件的连接点明显更宽。 每个翼片的端部以大约十度的角度向上（远离ABS）倾斜。 还公开了一种用于制造屏蔽的工艺。

    Wrap-around shielded writer with highly homogeneous shield material
    10.
    发明申请
    Wrap-around shielded writer with highly homogeneous shield material 有权
    带有高度均匀的屏蔽材料的环绕屏蔽作者

    公开(公告)号：US20110097601A1

    公开(公告)日：2011-04-28

    申请号：US12589597

    申请日：2009-10-26

    申请人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    发明人： Zhigang Bai ,  Yan Wu ,  Moris Dovek ,  Cherng Chyi Han

    IPC分类号： G11B5/33

    CPC分类号： G11B5/6082 ,  G11B5/112 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3163 ,  Y10T428/1171

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a main pole shielded laterally by a pair of side shields, shielded above by a trailing shield and shielded optionally below by a leading shield. The shields and the seed layers on which they are formed are formed of materials having substantially the same physical characteristics including the same material composition, the same hardness, the same response to processes such as ion beam etching (IBE), chemical mechanical polishing (CMP), mechanical lapping, such as the slider ABS lapping, the same coefficient of thermal expansion (CTE) as well as the same Bs. Optionally, the trailing shield may be formed on a high Bs seed layer to provide the write head with improved down-track performance.

    摘要翻译： 垂直磁记录（PMR）头被制造成具有由一对侧屏蔽横向屏蔽的主极，屏蔽在后面并由屏蔽罩屏蔽并且被前屏蔽罩屏蔽。 其形成的屏蔽层和种子层由具有相同物理特性的材料形成，包括相同的材料组成，相同的硬度，对离子束蚀刻（IBE），化学机械抛光（CMP） ），机械研磨，如滑块ABS研磨，相同的热膨胀系数（CTE）以及相同的Bs。 可选地，后屏蔽可以形成在高Bs种子层上，以向写头提供改进的下行轨迹性能。