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1. 发明授权

US07170714B2 Magnetic head having a heater circuit for thermally-assisted writing 失效
标题翻译：具有用于热辅助写入的加热器电路的磁头
公开(公告)号：US07170714B2
公开(公告)日：2007-01-30
申请号：US11253494
申请日：2005-10-17
申请人： Kevin Robert Coffey , Jeffrey Scott Lille , Andrew Ching Tam
发明人： Kevin Robert Coffey , Jeffrey Scott Lille , Andrew Ching Tam
IPC分类号： G11B5/127
CPC分类号： G11B5/3967 , G11B5/012 , G11B5/127 , G11B5/17 , G11B5/313 , G11B5/3133 , G11B5/314 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic head for thermally-assisted writing of data to a disk is disclosed. In one illustrative example, the magnetic head includes a write head element and a heating element which is a resistive infared radiator. The heating element is coupled to at least one via pad which is exposed on an outer surface of the magnetic head. This via pad may be the same pad utilized for the write head element or for a read sensor. The heating element is formed beneath or within the pole tip such that it is able to transfer heat to a portion of the disk before the write head element can write data to it Advantageously, the heater facilitates the writing of data to high coercivity media.
摘要翻译：公开了一种用于将数据热辅助写入磁盘的磁头。在一个说明性示例中，磁头包括写头元件和作为电阻式加注散热器的加热元件。加热元件耦合到暴露在磁头的外表面上的至少一个通孔焊盘。该通孔焊盘可以是用于写入头元件或读取传感器的相同的焊盘。加热元件形成在极尖之下或之内，使得其能够在写头元件能够向其写入数据之前将热量传递到盘的一部分。有利地，加热器有助于将数据写入高矫顽力介质。

2. 发明授权

US06538857B1 Read head with N-cycle switch for electrostatic discharge (ESD) protection 失效
标题翻译：读头用N周期开关进行静电放电（ESD）保护
公开(公告)号：US06538857B1
公开(公告)日：2003-03-25
申请号：US09662247
申请日：2000-09-14
申请人： Saad Doss , Glen Adam Garfunkel , Edward Hin Pong Lee , Chie Ching Poon , Neil Leslie Robertson , Andrew Ching Tam
发明人： Saad Doss , Glen Adam Garfunkel , Edward Hin Pong Lee , Chie Ching Poon , Neil Leslie Robertson , Andrew Ching Tam
IPC分类号： G11B540
CPC分类号： G11B5/4853 , G11B5/3106 , G11B5/3903 , G11B5/40 , G11B5/4806 , G11B2005/0016
摘要： A read head is provided with an N-cycle switch for sequentially shorting and unshorting a sense current circuit of a read head so that the read head will be protected from electrostatic discharges (ESDs) by shorting when the read head is not being tested and unshorted during tests of the read head. The shorting and unshorting switches, which are mounted on or in a slider carrying the read head, are activated by a laser beam.
摘要翻译：读头设置有N周期开关，用于顺序地短路和取消点读头的感测电流电路，使得当读头不被测试且未被排序时，通过短路来保护读头免受静电放电（ESD）的影响在读头测试期间。安装在携带读取头的滑块上或其中的短路和非启动开关由激光束激活。

3. 发明授权

US06321440B1 Method for adjusting curvature of magnetic read/write head sliders 失效
标题翻译：用于调整磁读/写磁头滑块的曲率的方法
公开(公告)号：US06321440B1
公开(公告)日：2001-11-27
申请号：US09189480
申请日：1998-11-10
申请人： Linden James Crawforth , Chie Ching Poon , Andrew Ching Tam
发明人： Linden James Crawforth , Chie Ching Poon , Andrew Ching Tam
IPC分类号： G11B5127
CPC分类号： G11B5/60 , Y10S977/724 , Y10S977/951 , Y10T29/49004 , Y10T29/49036 , Y10T29/49037 , Y10T29/49041 , Y10T29/49764 , Y10T29/49771
摘要： A method for adjusting the curvature of an air bearing surface (ABS) of a slider having a back surface opposite the ABS. The method includes steps of repeatedly measuring the curvature of the ABS and scribing lines (e.g. with a laser scribing tool) on the back surface to partially adjust the curvature of the ABS. In each measuring/scribing installment, the curvature of the ABS is measured and compared with a final target curvature to determine a curvature difference between the measured curvature and final target curvature. Each installment of scribing lines corrects for a predetermined percentage of the curvature difference. The predetermined percentage may be different in succeeding installments. Alternatively, each installment changes the curvature of the slider to match an intermediate target curvature. In a three-installment process, for example, there will be two intermediate target curvatures and a final target curvature.
摘要翻译：一种用于调节具有与ABS相对的后表面的滑块的空气轴承表面（ABS）的曲率的方法。该方法包括以下步骤：在背面上重复地测量ABS和划线（例如用激光划线工具）的曲率以部分地调节ABS的曲率。在每个测量/划线装置中，测量ABS的曲率并与最终目标曲率进行比较，以确定测量的曲率和最终目标曲率之间的曲率差。每一批划线将校正曲率差的预定百分比。后续分期付款的预定百分比可能不同。或者，每个装置改变滑块的曲率以匹配中间目标曲率。例如，在三次安装过程中，将存在两个中间目标曲率和最终目标曲率。

4. 发明授权

US06205002B1 Disk drive with textured slider contact region 失效
标题翻译：带有纹理滑块触点区域的磁盘驱动器
公开(公告)号：US06205002B1
公开(公告)日：2001-03-20
申请号：US08874848
申请日：1997-06-13
申请人： Peter Michael Baumgart , Thomas Allen Gregory , Ulla Vasant Nayak , Thao Anh Nguyen , Michael Luis Ramirez , Andrew Ching Tam , Run-Han Wang
发明人： Peter Michael Baumgart , Thomas Allen Gregory , Ulla Vasant Nayak , Thao Anh Nguyen , Michael Luis Ramirez , Andrew Ching Tam , Run-Han Wang
IPC分类号： G11B582
CPC分类号： G11B5/60 , G11B5/012 , G11B5/54 , G11B5/82 , G11B21/12 , G11B21/22
摘要： A disk drive having a disk with a contact start/stop (CSS) region on which a slider can rest is described. The CSS region is divided into at least three zones with the inner and outer zones having a surface topography which is different from the surface topography of the middle zone. The middle zone of the CSS region may be textured with bumps having a lower average height, a lower average density and/or a different bump diameter. The middle zone may also be left untextured. The slider is maintained over the CSS region during spin up and/or spin down.
摘要翻译：描述了一种具有带触点启动/停止（CSS）区域的磁盘的磁盘驱动器，滑块可以放置在该区域上。 CSS区域被分成至少三个区域，内部和外部区域具有与中间区域的表面形貌不同的表面形貌。 CSS区域的中间区域可以纹理化，具有较低的平均高度，较低的平均密度和/或不同的凸起直径的凸起。中间区域也可能没有纹理。在旋转和/或旋转时，滑块保持在CSS区域上。

5. 发明授权

US5981903A Laser system for simultaneous texturing of two sides of a substrate 失效
标题翻译：激光系统，用于同时纹理化两面基片
公开(公告)号：US5981903A
公开(公告)日：1999-11-09
申请号：US825307
申请日：1997-03-28
申请人： Peter Michael Baumgart , James Hammond Brannon , Chie Ching Poon , Iraj Kakesh Pour , Andrew Ching Tam
发明人： Peter Michael Baumgart , James Hammond Brannon , Chie Ching Poon , Iraj Kakesh Pour , Andrew Ching Tam
IPC分类号： G02F1/11 , G02F1/33 , G11B5/84 , G11B7/085 , G11B7/135 , B23K26/00
CPC分类号： G11B5/84 , G02F1/113 , G02F1/332
摘要： A laser system is described which concurrently directs highly equivalent diffracted beams derived from an initial laser beam to both sides of a substrate. The diffracted beams may be generated with sufficient energy to soften spots on the surfaces of the substrate to form texture bumps as are used on substrates for magnetic disks. The diffracted beams are generated by a multichannel acousto-optic modulator (MCAOM) having at least two channels. The crystal in the MCAOM has at least two mounting faces oriented so that the acoustic transducers mounted thereon generate acoustic fields which intersect the incident laser beam at a common angle, i.e., the Bragg angle. Energizing any of the transducers causes a corresponding first order beam to be diffracted out. Preferably the diffracted beams are generated by alternating driving signals to transducers to produce two beams with pulse intensity greater than 50% of that of the incident beam which can be directed to opposite sides of a substrate for extremely uniform texturing.
摘要翻译：描述了激光系统，其同时将从初始激光束衍生的高等效衍射光束引导到衬底的两侧。可以用足够的能量产生衍射光束以软化基板表面上的光斑，以形成如用于磁盘的基板上的纹理凸起。衍射光束由具有至少两个通道的多通道声光调制器（MCAOM）产生。 MCAOM中的晶体具有定向的至少两个安装面，使得安装在其上的声学换能器以共同的角度即布拉格角产生与入射激光束相交的声场。激励任何一个换能器使相应的一阶光束被衍射。优选地，衍射光束通过交替的驱动信号产生到换能器以产生具有大于入射光束的50％的脉冲强度的两个光束，该光束可以被引导到基板的相对两侧以进行非常均匀的纹理化。

6. 发明授权

US5830514A Controlling pulses in a laser texturing tool 失效
标题翻译：在激光纹理工具中控制脉冲
公开(公告)号：US5830514A
公开(公告)日：1998-11-03
申请号：US707385
申请日：1996-09-04
申请人： Michael Barenboim , Peter Michael Baumgart , Peter P. Chrusch , Benjamin Karni , Pieter J. M. Kerstens , Hong S. Seing , Andrew Ching Tam
发明人： Michael Barenboim , Peter Michael Baumgart , Peter P. Chrusch , Benjamin Karni , Pieter J. M. Kerstens , Hong S. Seing , Andrew Ching Tam
IPC分类号： B23K26/08 , G11B5/82 , G11B5/84 , G11B23/00
CPC分类号： G11B23/0028 , B23K26/0823 , G11B5/82 , G11B5/8404 , G11B5/8408
摘要： A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a hardfile disk. Disks are moved into and out of the texturing process in cassettes, through two disk-handling stations. Texturing occurs as the annular portions are exposed to a train of pulses from a Q-switched laser. The Q-switch within the laser is driven by a radio-frequency signal form an oscillator, which is in turn driven by a signal from a pulse generator, which can be adjusted to leave the radio-frequency signal on for a variable time between pulses without changing pulse frequency. The laser may be equipped with a shutter and with an electronic gate selectively preventing the production of laser pulses.
摘要翻译：例如，使用磁盘纹理工具来在硬盘的两侧的环形部分中提供纹理斑点。通过两个磁盘处理站将磁盘移入和移出磁带盒中的纹理过程。当环形部分暴露于来自Q开关激光器的脉冲串时，发生纹理化。激光器内的Q开关由一个振荡器的射频信号驱动，振荡器又由一个来自脉冲发生器的信号驱动，该脉冲发生器可以被调节以使射频信号在脉冲之间变化一段时间不改变脉冲频率。激光器可以配备有快门和电子门，选择性地防止产生激光脉冲。

7. 发明授权

US5761005A Combination transducer/slider/suspension 失效
标题翻译：组合传感器/滑块/悬架
公开(公告)号：US5761005A
公开(公告)日：1998-06-02
申请号：US926750
申请日：1997-09-10
申请人： Jeffrey Merritt McKay , Henry Shusei Nishihira , Andrew Ching Tam
发明人： Jeffrey Merritt McKay , Henry Shusei Nishihira , Andrew Ching Tam
IPC分类号： G11B5/187 , G11B5/31 , G11B5/48 , G11B5/49 , G11B5/60 , G11B21/00 , G11B21/21
CPC分类号： G11B5/6005 , G11B21/00 , G11B5/3103 , G11B5/4806 , G11B5/4813 , G11B5/4833 , G11B5/484 , G11B5/49 , Y10T29/49032 , Y10T29/49041
摘要： A disk drive assembly in which the suspension, slider and transducer are integrated and fabricated to produce a combination assembly. The combination transducer-slider-suspension assembly is batch produced by forming a plurality of the combination assemblies onto a single wafer. The wafer is then diced to separate the assemblies into individual sections. The transducers are deposited onto the wafer and the air bearing surface formed. Conductors to interconnect each transducer with the external circuits are insulated from the wafer and deposited along a path which will form the suspension. A spring-like resilient layer is then deposited over and electrically insulated from the conductors. The wafer is then pattern etched to remove a portion of the wafer backside to form the suspension and provide a transducer/slider combination having an air bearing surface after the wafer is diced to separate the individual combination assemblies. The air bearing surface is defined as the slider surface immediately adjacent the media surface during read/write operation of the disk drive assembly whether or not the slider is flying above or in sliding contact with the media surface during operation. Integrated circuit amplifiers can be deposited at the free end of the conductors prior to separation of individual assemblies.
摘要翻译：磁盘驱动器组件，其中悬架，滑块和换能器被集成和制造以产生组合组件。通过将多个组合组件形成在单个晶片上来批量生产组合传感器 - 滑块 - 悬挂组件。然后将晶片切割成将组件分离成单个部分。传感器沉积在晶片上并形成空气轴承表面。将每个换能器与外部电路互连的导体与晶片绝缘，并沿着将形成悬架的路径沉积。然后将弹簧状弹性层沉积在导电体上并与导体电绝缘。然后对晶片进行图形蚀刻以去除晶片背面的一部分以形成悬架，并且在切割晶片以分离各个组合组件之后提供具有空气轴承表面的换能器/滑块组合。空气支承表面被定义为在盘驱动器组件的读/写操作期间与介质表面紧邻的滑块表面，无论滑块是否在操作期间飞越高于介质表面或与介质表面滑动接触。在分离各个组件之前，集成电路放大器可以在导体的自由端沉积。

8. 发明授权

US5689057A Calibration disk with disk bumps for calibrating PZT sliders 失效
标题翻译：校准盘，用于校准PZT滑块
公开(公告)号：US5689057A
公开(公告)日：1997-11-18
申请号：US607753
申请日：1996-02-27
申请人： Peter Michael Baumgart , Karl A. Flechsig , Michael Franklin Lee , Wing P. Leung , Ullal Vasant Nayak , Thao Anh Nguyen , Timothy Christopher O'Sullivan , Andrew Ching Tam
发明人： Peter Michael Baumgart , Karl A. Flechsig , Michael Franklin Lee , Wing P. Leung , Ullal Vasant Nayak , Thao Anh Nguyen , Timothy Christopher O'Sullivan , Andrew Ching Tam
IPC分类号： B23K26/08 , G11B5/82 , G11B5/84 , G11B7/00 , G11B7/08 , G11B33/10 , G01B5/28
CPC分类号： B82Y15/00 , B23K26/0823 , B82Y10/00 , G11B33/10 , G11B5/82 , G11B5/8404 , G11B5/8408 , Y10T29/49995
摘要： Crater shaped bumps are made on a calibration disk which can be used for calibrating a PZT slider, the PZT slider in turn being used for detecting predetermined asperities on a production run magnetic disk. The crater shaped bumps emulate predetermined asperities of production run magnetic disks and especially asperities which are undesirable and would cause the production run disk to be discarded after testing by the PZT slider. Crater shaped bumps which emulate undesirable asperities on current production runs of magnetic disks have a diameter in the range of 10 to 25 .mu.m and a peripheral ridge with a height h.sub.r above a nominal surface of the calibration disk in the range of 75 to 120 nm. Close tolerance crater shaped bumps with this configuration can be made by impinging two or more pulses of laser energy on the same location of a calibration disk. By increasing the number of pulses the height of the peripheral ridge progressively increases. By employing multiple pulses, the height of the peripheral ridge is increased while the diameter of the crater shaped bump stays substantially constant. Further, by employing multiple pulses diameters and heights of crater shaped bumps can be produced with close tolerances within a diameter range of 5 to 20 .mu.m and a height range of 2 to 120 nm. Different arrangements of the crater shaped bumps on a calibration disk are provided for increasing the range of calibration of the PZT slider.
摘要翻译：在可用于校准PZT滑块的校准盘上形成火山口形凸块，PZT滑块又用于检测生产运行磁盘上的预定凹凸。火山口形凸起模拟生产运行磁盘的预定粗糙度，特别是不期望的粗糙度，并且会在PZT滑块测试后导致生产运行盘被丢弃。在当前的磁盘生产运行中模拟不期望的粗糙度的火山口形凸起具有在10至25μm的范围内的直径和在校准盘的标称表面上的高度hr在75至120nm范围内的周边脊。可以通过在校准盘的相同位置上照射激光能量的两个或更多个脉冲来实现具有该配置的紧公差凹坑形状的凸块。通过增加脉冲数，周边脊的高度逐渐增加。通过采用多个脉冲，周边脊的高度增加，而凹坑形凸起的直径基本保持不变。此外，通过使用多个脉冲，可以在5〜20μm的直径范围内和2〜120nm的高度范围内产生具有紧密公差的凹坑形凸起的高度。提供校准盘上的凹坑形突起的不同布置，用于增加PZT滑块的校准范围。

9. 发明授权

US5658475A Apparatus for laser texturing disks 失效
标题翻译：用于激光纹理化磁盘的装置
公开(公告)号：US5658475A
公开(公告)日：1997-08-19
申请号：US613564
申请日：1996-03-11
申请人： Michael Barenboim , Peter Michael Baumgart , Benjamin Karni , Pieter J. M. Kerstens , Thao Anh Nguyen , Hong S. Seing , Andrew Ching Tam , Peter Paul Chrusch
发明人： Michael Barenboim , Peter Michael Baumgart , Benjamin Karni , Pieter J. M. Kerstens , Thao Anh Nguyen , Hong S. Seing , Andrew Ching Tam , Peter Paul Chrusch
IPC分类号： B65G49/07 , B23K26/067 , B23K26/08 , G11B5/60 , G11B5/82 , G11B5/84 , G11B23/00 , B23K26/00
CPC分类号： G11B23/00 , B23K26/067 , B23K26/0823 , G11B5/82 , G11B5/84 , G11B5/8404 , G11B5/6011
摘要： A disk texturing tool is used, for example, to provide textured spots in an annular portion of both sides of a hardfile disk. Disks are moved into and out of the texturing process in cassettes, through two disk-handling stations. In each disk-handling station, a lifter raises each individual disk from the cassette. The individual disk is then transferred to a pick-and-place mechanism, which moves it to a spindle. The spindle spins and translates the disk, so that both sides of the disk are exposed to beams derived from a pulsed laser. The pick-and-place mechanism then returns the disk to the lifter, which lowers it into the cassette pocket from which it was taken. The pick-and-place mechanism simultaneously moves one disk from the lifter to the spindle and another from the spindle to the lifter. While disks are moved by the pick-and-place mechanism of one disk-handling station, a disk in the spindle of the other disk-handling station is exposed to the laser beams.
摘要翻译：例如，使用磁盘纹理工具来在硬盘的两侧的环形部分中提供纹理斑点。通过两个磁盘处理站将磁盘移入和移出磁带盒中的纹理过程。在每个磁盘处理站中，升降器从盒中提起每个单独的盘。然后将单个磁盘转移到拾取和放置机构，将其移动到主轴。主轴旋转并平移盘，使得盘的两侧暴露于源自脉冲激光的束。拾取和放置机构然后将磁盘返回到升降器，从而将其降低到从中取出的磁带盒中。拾取和放置机构同时将一个盘从升降器移动到主轴，另一个从主轴移动到升降器。当磁盘通过一个磁盘处理站的拾取和放置机构移动时，另一磁盘处理站的主轴中的磁盘暴露于激光束。

10. 发明授权

US06797130B2 Laser textured magnetic disk 失效
公开(公告)号：US06797130B2
公开(公告)日：2004-09-28
申请号：US10607937
申请日：2003-06-27
申请人： Iraj Kavosh , James Shuster , Andrew Ching Tam
发明人： Iraj Kavosh , James Shuster , Andrew Ching Tam
IPC分类号： B23K2606
CPC分类号： G11B5/8408 , B23K26/06 , B23K26/0648 , B23K26/0665 , B23K26/244 , G11B5/656 , G11B5/731 , G11B5/732 , G11B5/82 , G11B5/851
摘要： A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on the magnetic disk by applying a beam from a near infrared wavelength laser to the surface of the carbon layer.

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