公开(公告)号：US09123381B2

公开(公告)日：2015-09-01

申请号：US13298712

申请日：2011-11-17

申请人： Manuel Anaya-Dufresne ,  Brian W. Karr ,  Gary J. Kunkel ,  Zhen Wei

发明人： Manuel Anaya-Dufresne ,  Brian W. Karr ,  Gary J. Kunkel ,  Zhen Wei

IPC分类号： G01K7/16 ,  G11B5/00 ,  G11B20/10 ,  G11B5/60

CPC分类号： G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

摘要： A sensor supported by a head transducer has a temperature coefficient of resistance (TCR) and a sensor resistance. The sensor operates at a temperature above ambient and is responsive to changes in sensor-medium spacing. Conductive contacts connected to the sensor have a contact resistance and a cross-sectional area adjacent to the sensor larger than that of the sensor, such that the contact resistance is small relative to the sensor resistance and negligibly contributes to a signal generated by the sensor. A multiplicity of head transducers each support a TCR sensor and a power source can supply bias power to each sensor of each head to maintain each sensor at a fixed temperature above an ambient temperature in the presence of heat transfer changes impacting the sensors. A TCR sensor of a head transducer can include a track-oriented TCR sensor wire for sensing one or both of asperities of the medium.

摘要翻译： 由头部换能器支撑的传感器具有电阻温度系数（TCR）和传感器电阻。 传感器在高于环境温度的温度下工作，并响应传感器 - 介质间距的变化。 连接到传感器的导电触头具有与传感器相邻的接触电阻和与传感器相邻的横截面面积，使得接触电阻相对于传感器电阻较小，并且对传感器产生的信号可忽略不计。 多个头传感器各自支持TCR传感器，并且电源可以向每个头部的每个传感器提供偏置功率，以在存在影响传感器的热传递变化的情况下将每个传感器维持在高于环境温度的固定温度。 头传感器的TCR传感器可以包括用于感测介质的粗糙体中的一个或两个的面向轨道的TCR传感器线。

公开(公告)号：US20120120982A1

公开(公告)日：2012-05-17

申请号：US13298712

申请日：2011-11-17

申请人： Manuel Anaya-Dufresne ,  Brian W. Karr ,  Gary J. Kunkel ,  Zhen Wei

发明人： Manuel Anaya-Dufresne ,  Brian W. Karr ,  Gary J. Kunkel ,  Zhen Wei

IPC分类号： G01K13/00

CPC分类号： G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

摘要： A sensor supported by a head transducer has a temperature coefficient of resistance (TCR) and a sensor resistance. The sensor operates at a temperature above ambient and is responsive to changes in sensor-medium spacing. Conductive contacts connected to the sensor have a contact resistance and a cross-sectional area adjacent to the sensor larger than that of the sensor, such that the contact resistance is small relative to the sensor resistance and negligibly contributes to a signal generated by the sensor. A multiplicity of head transducers each support a TCR sensor and a power source can supply bias power to each sensor of each head to maintain each sensor at a fixed temperature above an ambient temperature in the presence of heat transfer changes impacting the sensors. A TCR sensor of a head transducer can include a track-oriented TCR sensor wire for sensing one or both of asperities of the medium.

摘要翻译： 由头部换能器支撑的传感器具有电阻温度系数（TCR）和传感器电阻。 传感器在高于环境温度的温度下工作，并响应传感器 - 介质间距的变化。 连接到传感器的导电触头具有与传感器相邻的接触电阻和与传感器相邻的横截面面积，使得接触电阻相对于传感器电阻较小，并且对传感器产生的信号可忽略不计。 多个头传感器各自支持TCR传感器，并且电源可以向每个头部的每个传感器提供偏置功率，以在存在影响传感器的热传递变化的情况下将每个传感器维持在高于环境温度的固定温度。 头传感器的TCR传感器可以包括用于感测介质的粗糙体中的一个或两个的面向轨道的TCR传感器线。

公开(公告)号：US6144528A

公开(公告)日：2000-11-07

申请号：US426145

申请日：1999-10-22

申请人： Manuel Anaya-Dufresne ,  Pablo G. Levi ,  Mark J. Donovan

发明人： Manuel Anaya-Dufresne ,  Pablo G. Levi ,  Mark J. Donovan

IPC分类号： G11B20060101 ,  G11B5/60 ,  G11B17/32

CPC分类号： G11B5/6005 ,  G11B17/32

摘要： The present invention is embodied in an air bearing slider. The slider contains a magnetic head for writing and reading data to and from the magnetic medium of a hard disk. The slider is attached to an actuator arm which reciprocates over the disk surface to position the slider over the surface of the disk. When placed in the airflow existing just above the surface of a rotating disk the slider flies above the disk. The slider which has a leading edge, a trailing edge and two sides defined between the leading and trailing edges comprises a pair of leading pads positioned near the leading edge, a channel defined between the leading pads, a side pad positioned adjacent to each of the sides respectively, a center pad positioned near the trailing edge and a cavity disposed between the pads. With the side pads being separate from the leading pads as well as the inclusion of the channel providing a reduction in stiction. Further, the present invention's configuration of elements provides a slider with a nearly constant flying height over the entire disk surface, even during changes in airflow velocity, skew angles and loading. Also, the slider possess high pitch and roll stiffness, which contributes to it ability to maintain a near constant flying height.

摘要翻译： 本发明体现在空气轴承滑块中。 该滑块包含用于向硬盘的磁性介质写入和读取数据的磁头。 滑块附接到致动器臂，该致动器臂在盘表面上往复运动，以将滑块定位在盘的表面上。 当放置在旋转盘的表面正上方的气流中时，滑块在盘上方飞行。 具有前缘，后缘和限定在前缘和后缘之间的两侧的滑块包括位于前缘附近的一对引导垫，限定在前导垫之间的通道，与垫 侧面分别设置位于后缘附近的中心垫和设置在垫之间的空腔。 侧面垫与前导垫分开，并且包括通道，减少了静摩擦力。 此外，本发明的元件结构即使在气流速度，歪斜角度和负载的变化期间也提供了在整个盘表面上具有几乎恒定的飞行高度的滑块。 此外，滑块具有高的俯仰和侧倾刚度，这有助于其保持接近恒定飞行高度的能力。

公开(公告)号：US06445542B1

公开(公告)日：2002-09-03

申请号：US09519150

申请日：2000-03-06

申请人： Pablo G. Levi ,  Bill Sun ,  Manuel Anaya-Dufresne ,  Pravin Prabhu

发明人： Pablo G. Levi ,  Bill Sun ,  Manuel Anaya-Dufresne ,  Pravin Prabhu

IPC分类号： G11B560

CPC分类号： G11B5/6005

摘要： A slider includes an air bearing surface (ABS) including a plurality of separate coplanar pads, a cavity recessed to a certain depth beneath the level of the ABS, and a plurality of steps in which each step is disposed at a level between that of the ABS and that of the cavity. The plurality of steps include a trailing edge step and a leading edge step, and in some embodiments a first side step and a second side step. The leading edge step is provided at a level deeper than that of the trailing edge step. The first side step and the second side step may be provided at the same or different levels to tailor the flight characteristics of the slider. A process is also disclosed for the fabrication of a slider of the present invention. The process includes at least three cycles of masking, etching, and stripping in order to form at least three successively deeper levels, the deepest level being the cavity. Selective masking of the substrate allows portions of the substrate to be preserved through successive etching operations to become the ABS and the plurality of steps.

摘要翻译： 滑块包括空气轴承表面（ABS），其包括多个单独的共面焊盘，凹陷到ABS的水平面下方一定深度的空腔，以及多个台阶，其中每个台阶设置在 ABS和腔的ABS。 多个步骤包括后缘步骤和前缘步骤，并且在一些实施例中包括第一侧步骤和第二侧步骤。 前缘步长被设置在比后缘步长更深的水平上。 可以以相同或不同的水平提供第一侧台阶和第二侧台阶以调整滑块的飞行特性。 还公开了用于制造本发明的滑块的方法。 该方法包括至少三个掩膜，蚀刻和剥离循环，以便形成至少三个相继更深的水平，最深的水平是空腔。 衬底的选择性掩蔽允许通过连续的蚀刻操作保留衬底的部分以成为ABS和多个步骤。

公开(公告)号：US6137656A

公开(公告)日：2000-10-24

申请号：US178588

申请日：1998-10-26

申请人： Pablo G. Levi ,  Manuel Anaya-Dufresne

发明人： Pablo G. Levi ,  Manuel Anaya-Dufresne

IPC分类号： G11B5/60 ,  G11B17/32

CPC分类号： G11B17/32 ,  G11B5/6005

摘要： An air bearing slider for use in a disk drive includes a leading edge, a trailing edge, and parallel sides defined between said edges. The slider has a plurality of pads that form discrete air bearing surfaces having a uniform height. The pads include two leading pads formed along the leading edge, a center pad defined along the trailing edge and two side pads. A platform surrounds the center pad and another platform is formed between the leading pads. The slider has a side bridge between each side pad and leading pad and a leading bridge between the leading pads. The side bridge has a height that is less than the height of the pads and which is configured to direct air towards the side pads. The directed air in cooperation with the slider geometry regulates lifting pressure under the center and side pads to limit pitch and maintain a constant slider flying height.

摘要翻译： 用于磁盘驱动器的空气轴承滑块包括前边缘，后缘以及限定在所述边缘之间的平行边。 滑块具有形成具有均匀高度的离散空气轴承表面的多个垫。 焊盘包括沿前缘形成的两个前端焊盘，沿后缘限定的中心焊盘和两个侧焊盘。 一个平台围绕着中心垫，另一个平台则形成在前排垫之间。 滑块具有在每个侧焊盘和引导焊盘之间的侧桥和在引导焊盘之间的引导桥。 侧桥具有小于垫的高度的高度，并且其被配置为将空气引向侧垫。 与滑块几何形状协调的定向空气调节中心和侧垫下方的提升压力，以限制俯仰并保持滑块飞行高度不变。

公开(公告)号：US06583961B2

公开(公告)日：2003-06-24

申请号：US09957297

申请日：2001-09-19

申请人： Pablo G. Levi ,  Manuel Anaya-Dufresne ,  Wuxing Gan ,  Jesse Jianxian Dong

发明人： Pablo G. Levi ,  Manuel Anaya-Dufresne ,  Wuxing Gan ,  Jesse Jianxian Dong

IPC分类号： G11B560

CPC分类号： G11B5/6082 ,  G11B5/54 ,  G11B5/6064

摘要： An air bearing surface for use on a magnetic read/write head. The air bearing surface provides a stable flight profile while exhibiting exception load/unload characteristics through the use of a plurality of pads providing high pressure areas as well as a central cavity providing a sub-ambient pressure to counter the high pressure areas. The channel is set a predetermined distance from the leading edge of the air bearing, the predetermined distance being greater than with prior art designs. A channel extends from the leading edge to the cavity to allow airflow into the cavity. The channel and the set back of the cavity both act in conjunction to facilitate unloading of the air bearing by preventing excessive sub ambient pressures.

公开(公告)号：US06229672B1

公开(公告)日：2001-05-08

申请号：US09189137

申请日：1998-10-19

申请人： Christopher A. Lee ,  Ciuter Chang ,  Pablo G. Levi ,  Pravin P. Prabhu ,  Manuel Anaya-Dufresne

发明人： Christopher A. Lee ,  Ciuter Chang ,  Pablo G. Levi ,  Pravin P. Prabhu ,  Manuel Anaya-Dufresne

IPC分类号： G11B560

CPC分类号： G11B5/6005 ,  G11B21/21

摘要： An air bearing slider for a magnetic head is defined by a leading edge and a trailing edge and has a central longitudinal axis extending from the leading edge to the trailing edge. A pair of side pads, and a center pad between the side pads that is disposed substantially on the center axis, are formed on the air bearing surface of the slider. A first central recess having a T-shaped configuration is etched to a first depth, preferably in the range of 5-30 micro-inches with reference to the air bearing surface. A second major recess portion is etched to a second depth in the range of 60-150 micro-inches. The air bearing surface is configured for high load applications and maintains a flat flying height profile. The configured slider is particularly useful with small size sliders, such as picosliders.

摘要翻译： 用于磁头的空气轴承滑块由前缘和后缘限定，并且具有从前缘延伸到后缘的中心纵向轴线。 在滑块的空气轴承表面上形成有一对侧垫以及基本上位于中心轴上的侧垫之间的中心垫。 相对于空气轴承表面，具有T形构造的第一中心凹部被蚀刻到第一深度，优选地在5-30微英寸的范围内。 将第二主要凹陷部分蚀刻到60-150微英寸范围内的第二深度。 空气轴承表面配置为高负载应用，并保持平坦的飞行高度轮廓。 配置的滑块对于小尺寸滑块（如皮秒）特别有用。

公开(公告)号：US06646832B2

公开(公告)日：2003-11-11

申请号：US09772356

申请日：2001-01-29

申请人： Manuel Anaya-Dufresne ,  Pablo G. Levi

发明人： Manuel Anaya-Dufresne ,  Pablo G. Levi

IPC分类号： G11B560

CPC分类号： G11B5/6005

摘要： A disk drive (22) for load/unload applications having an actuator arm (32), a slider (34) and a suspension membrane (48) which attaches the slider (34) to the actuator arm (32). The slider (34) includes a leading edge (50), a trailing edge (52), a number of pads (80, 82) and a cavity (60), which creates a region of sub-ambient pressure (61), including a negative pressure center (62). A load point (64) is formed where the suspension membrane (48) attaches to the slider (34). The negative pressure center (62) is positioned towards the trailing edge (52) relative to the load point (64), such that when upward force (96) is applied to the slider (34) at the load point (64), a moment (98) is produced which raises the leading edge (50), allowing increased air flow into the cavity (60), which diminishes the sub-ambient pressure (61), and allows the arm (34) to be raised without damaging the suspension membrane (48). Also, a slider (34) contoured for use in a load/unload disk drive (22) and a method for disengaging a slider (34) having high stiffness from a disk surface (26) without damaging a disk drive suspension membrane (48).

摘要翻译： 一种用于装载/卸载应用的盘驱动器（22），具有致动器臂（32），滑块（34）和将滑块（34）附接到致动器臂（32）的悬挂膜（48）。 滑块（34）包括前缘（50），后缘（52），多个垫（80,82）和空腔（60），其形成次环境压力的区域（61），包括 负压中心（62）。 形成悬挂膜（48）附接到滑块（34）的载荷点（64）。 负压中心（62）相对于负载点（64）朝向后缘（52）定位，使得当向上的力（96）在负载点（64）施加到滑块（34）时， 产生力矩（98），其提高前缘（50），允许增加空气流入空腔（60），这降低了次环境压力（61），并且允许臂（34）升高而不损坏 悬挂膜（48），以及用于装载/卸载盘驱动器（22）中成形的滑块（34）和用于使具有高硬度的滑块（34）从盘表面（26）脱离而不损坏盘 驱动悬浮膜（48）。

公开(公告)号：US06356412B1

公开(公告)日：2002-03-12

申请号：US09410107

申请日：1999-09-30

申请人： Pablo G. Levi ,  Manuel Anaya-Dufresne ,  Wuxing Gan ,  Jesse Jianxian Dong

发明人： Pablo G. Levi ,  Manuel Anaya-Dufresne ,  Wuxing Gan ,  Jesse Jianxian Dong

IPC分类号： G11B560

CPC分类号： G11B5/6082 ,  G11B5/54 ,  G11B5/6064

摘要： An air bearing surface for use on a magnetic read/write head. The air bearing surface provides a stable flight profile while exhibiting exception load/unload characteristics through the use of a plurality of pads providing high pressure areas as well as a central cavity providing a sub-ambient pressure to counter the high pressure areas. The channel is set a predetermined distance from the leading edge of the air bearing, the predetermined distance being greater than with prior art designs. A channel extends from the leading edge to the cavity to allow airflow into the cavity. The channel and the set back of the cavity both act in conjunction to facilitate unloading of the air bearing by preventing excessive sub ambient pressures.

摘要翻译： 用于磁读/写磁头的空气轴承表面。 空气轴承表面提供了稳定的飞行剖面，同时通过使用提供高压区域的多个垫以及提供低于环境压力以抵抗高压区域的中心腔体而呈现异常的负载/卸载特性。 通道与空气轴承的前缘设定预定距离，预定距离大于现有技术设计。 通道从前缘延伸到空腔，以允许气流进入空腔。 空腔的通道和后退部分共同作用，以便于通过防止过多的次环境压力来卸载空气轴承。