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1. 发明授权

US07006336B2 Magnetic head having a heater circuit for thermally-assisted writing 失效
公开(公告)号：US07006336B2
公开(公告)日：2006-02-28
申请号：US10213230
申请日：2002-08-06
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.

2. 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。

3. 发明授权

US6075604A Apparatus for measuring curvature of magnetic read/write head sliders 失效
标题翻译：用于测量磁读/写磁头滑块的曲率的装置
公开(公告)号：US6075604A
公开(公告)日：2000-06-13
申请号：US189311
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： G01B11/255 , G01B11/24
CPC分类号： G01B11/255
摘要： An apparatus for measuring a curvature of an air bearing surface (ABS) of a read/write magnetic head slider. The apparatus has two lasers which direct laser beams toward the ABS. The beams strike the ABS and are specularly reflected. The reflected beams are directed toward a position sensing optical detector. The distance between the points where the beams strike the detector is indicative of the curvature of the ABS. The beams my be alternately pulsed so that the detector outputs a DC-biased square wave signal, the voltage-step difference of which indicates the curvature. In another embodiment, a single laser beam is scanned by a scanner and passed through a scan lens. The scan lens is located one focal length from the scanner. A reflected laser beam is reflected from the ABS and is collected by the scan lens. The reflected laser beam is then directed toward a position sensing optical detector. The detector is located outside the focal plane of the scan lens. The position of the laser beam on the detector is dependent upon the curvature of the ABS. Then the magnitude of the detector output provides a measure of the curvature.
摘要翻译：一种用于测量读/写磁头滑块的空气轴承表面（ABS）的曲率的装置。该装置具有将激光束引向ABS的两个激光器。光束撞击ABS并被镜面反射。反射光束被指向位置感测光学检测器。光束撞击检测器的点之间的距离表示ABS的曲率。光束交替脉冲，使得检测器输出一个直流偏置方波信号，其电压阶差表示曲率。在另一个实施例中，单个激光束被扫描仪扫描并通过扫描透镜。扫描镜头位于扫描仪的一个焦距处。反射的激光束从ABS反射并被扫描透镜收集。然后将反射的激光束导向位置感测光学检测器。检测器位于扫描透镜的焦平面外。激光束在检测器上的位置取决于ABS的曲率。然后检测器输出的幅度提供曲率的量度。

4. 发明授权

US06049056A Method of laser cutting a metal line on an MR head with a laser 失效
标题翻译：用激光切割MR头上的金属线的方法
公开(公告)号：US06049056A
公开(公告)日：2000-04-11
申请号：US4693
申请日：1998-01-08
申请人： Hamid Balamane , Chie Ching Poon , Neil Leslie Robertson , Andrew Ching Tam
发明人： Hamid Balamane , Chie Ching Poon , Neil Leslie Robertson , Andrew Ching Tam
IPC分类号： B23K26/40 , B23K26/08
CPC分类号： B23K26/40 , B23K26/362 , B23K2203/26 , B23K2203/50 , Y10T29/49032
摘要： A thin film conductive line is formed between MR pads on an MR head for protecting an MR sensor from electrostatic discharge (ESD) during assembly steps between row level fabrication of the head and prior to merge of a head stack assembly with a disk stack assembly. The conductive line may have a reduced thickness delete pad. A laser beam having a fluence sufficient to sever the conductive line at the delete pad but insufficient to damage or cause debris from structure underlying or surrounding the conductive line is used to sever the conductive line. The method traverses minimum energy, short laser pulses at a high pulse rate across the line, the melted material withdrawing from the melted area and being heaped on top of adjacent portions of the delete pad by surface tension and the melted material cooling to room temperature before the next pulse so that there is no cumulative heating and therefore no damage to or debris from the underlying structure. The conductive material of the line is incrementally plowed to each side of a severed path by successive overlapping laser pulses so that when the series of laser pulses has traversed the width of the delete pad the conductive line has been severed.
摘要翻译：在MR头上的MR焊盘之间形成薄膜导电线，用于在磁头堆叠组件与磁盘堆叠组件合并之前的组装步骤期间保护MR传感器免受静电放电（ESD）的影响。导线可以具有减小的厚度删除焊盘。激光束具有足够的能量来切断在删除焊盘处的导线，但是不足以损坏或者导致来自导电线下面或周围的结构的碎屑被切断导线。该方法穿过线路以高脉冲速度穿过最小能量，短激光脉冲，熔化的材料从熔化区域退出，并通过表面张力堆积在删除焊盘的相邻部分的顶部，并将熔融的材料冷却至室温下一个脉冲，使得没有累积加热，因此没有来自底层结构的损坏或碎屑。线的导电材料通过连续重叠的激光脉冲逐渐地被切割到切断路径的每一侧，使得当一系列激光脉冲已经穿过删除焊盘的宽度时，导线已被切断。

5. 发明授权

US5963569A Multiple channel acousto-optic modulators 失效
标题翻译：多声道声光调制器
公开(公告)号：US5963569A
公开(公告)日：1999-10-05
申请号：US825305
申请日：1997-03-28
申请人： Peter Michael Baumgart , James Hammond Brannon , Chie Ching Poon , Andrew Ching Tam
发明人： Peter Michael Baumgart , James Hammond Brannon , Chie Ching Poon , Andrew Ching Tam
IPC分类号： G11B7/085 , G02F1/11 , G11B7/135 , G02F1/33 , H01S3/10
CPC分类号： G02F1/113 , G02F1/332
摘要： A multichannel acousto-optic modulator (MCAOM) is described which uses a crystal with a plurality of mounting faces for acoustic transducers. The mounting faces are 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. A two channel MCAOM uses two transducers. Extension to any higher number of channels follows accordingly. Energizing any of the transducers causes a corresponding first order beam to be diffracted out. Since the acoustic field for each transducer intersects the incident beam with a unique orientation, each first order beam is diffracted out on a unique axis. A system utilizing an MCAOM has electronic means for controlling the driving signals to the transducers to control each channel as required by the application. Amplitude and frequency modulation of the driving signals allows the intensity and angle of the beams to be controlled.
摘要翻译：描述了使用具有用于声学换能器的多个安装面的晶体的多声道声光调制器（MCAOM）。安装面被定向成使得安装在其上的声学换能器产生以入射激光束以相同的角度即布拉格角相交的声场。双通道MCAOM使用两个换能器。扩展到任何更多数量的频道都是相应的。激励任何一个换能器使相应的一阶光束被衍射。由于每个传感器的声场以独特的取向与入射光束相交，所以每一个第一阶光束在独特的轴上被衍射。使用MCAOM的系统具有用于控制到换能器的驱动信号的电子装置，以根据应用的要求来控制每个通道。驱动信号的幅度和频率调制允许控制光束的强度和角度。

6. 发明授权

US5768076A Magnetic recording disk having a laser-textured surface 失效
标题翻译：具有激光纹理表面的磁记录盘
公开(公告)号：US5768076A
公开(公告)日：1998-06-16
申请号：US601887
申请日：1996-02-15
申请人： Peter Michael Baumgart , Wing Pun Leung , Thao Anh Nguyen , Andrew Ching Tam
发明人： Peter Michael Baumgart , Wing Pun Leung , Thao Anh Nguyen , Andrew Ching Tam
IPC分类号： B23K26/00 , G11B5/60 , G11B5/62 , G11B5/64 , G11B5/82 , G11B5/84 , G11B5/704
CPC分类号： B23K26/0078 , G11B5/62 , G11B5/64 , G11B5/82 , G11B5/84 , G11B5/8404 , G11B5/8408 , G11B5/6011
摘要： A data recording disk having at least part of the data storage surface textured according to a process for creating a "distant bump array" surface texture for reducing stiction. The texturing process uses a tightly focused diode-pumped Nd:YLF or Nd:YVO.sub.4 or other solid-state laser that is pulsed with a 0.3-90 nanosecond pulse train to produce a plurality of distantly-spaced bumps in the disk surface. The bump profile can be selected as a smooth dimple or one with a central protrusion useful for low stiction without close spacing or elevated "roughness". The data-storage region of the disk surface can be textured for low stiction without materially affecting magnetic data storage density.
摘要翻译：一种数据记录盘，其具有至少部分数据存储表面，根据用于创建用于减少静摩擦的“远凸起阵列”表面纹理的处理而纹理化。纹理化处理使用紧密聚焦的二极管泵浦Nd：YLF或Nd：YVO4或其他固体激光器，其用0.3-90纳秒脉冲串脉冲，以在盘表面中产生多个远距离间隔的凸块。凸起轮廓可以选择为平滑的凹坑，也可以选择具有中心凸起的中心凸起，该中心凸起可用于低静压，而没有紧密间隔或升高的“粗糙度”。磁盘表面的数据存储区域可以纹理化以实现低静态，而不会对磁数据存储密度造成重大影响。

7. 发明授权

US5699160A Optical apparatus for inspecting laser texture 失效
标题翻译：用于检查激光纹理的光学装置
公开(公告)号：US5699160A
公开(公告)日：1997-12-16
申请号：US710806
申请日：1996-09-23
申请人： Michael Barenboim , Peter Michael Baumgart , Peter P. Chrusch , Benny Michael Harper , Benjamin Karni , Pieter J. M. Kerstens , Michael Gerard Lisanke , Hong S. Seing , Huizong Lu , Lanphuong Thi Pena , Ali Reza Taheri , Andrew Ching Tam
发明人： Michael Barenboim , Peter Michael Baumgart , Peter P. Chrusch , Benny Michael Harper , Benjamin Karni , Pieter J. M. Kerstens , Michael Gerard Lisanke , Hong S. Seing , Huizong Lu , Lanphuong Thi Pena , Ali Reza Taheri , Andrew Ching Tam
IPC分类号： G01B9/02 , G01B11/22 , G11B5/84
CPC分类号： G01B9/02019 , G01B11/22 , G01B9/02057 , G11B5/8404 , G01B2290/45 , G01B2290/70
摘要： Inspection apparatus for determining the profile of textured spots extending in a pattern along a surface of a magnetic disk includes an interferometer which illuminates first and second, adjacently disposed test spots on the surface. The disk and the interferometer are moved, relative to one another, so that one of the test spots traverses the textured spots in the pattern while the other test spot is moved along a flat portion of the disk surface. In one embodiment, the inspection apparatus is built into the device forming the textured spots, providing feedback controlling the texturing process.
摘要翻译：用于确定沿着磁盘表面沿图案延伸的纹理斑点的轮廓的检查装置包括：照射第一和第二相邻设置在表面上的测试点的干涉仪。盘和干涉仪相对于彼此移动，使得一个测试点在图案中穿过纹理斑点，而另一个测试点沿着盘表面的平坦部分移动。在一个实施例中，检查装置内置在形成纹理斑点的装置中，提供控制纹理化工艺的反馈。

8. 发明授权

US06246543B1 Textured data storage disk having a brittle nonmetallic substrate 失效
标题翻译：具有脆性非金属基底的纹理数据存储盘
公开(公告)号：US06246543B1
公开(公告)日：2001-06-12
申请号：US08714831
申请日：1996-09-17
申请人： Peter Michael Baumgart , Wing Pun Leung , Hung Viet Nguyen , Thao Anh Nguyen , Andrew Ching Tam , Anthony Wu
发明人： Peter Michael Baumgart , Wing Pun Leung , Hung Viet Nguyen , Thao Anh Nguyen , Andrew Ching Tam , Anthony Wu
IPC分类号： G11B582
CPC分类号： G11B5/8408 , B23K26/355 , B23K26/40 , B23K2103/16 , B23K2103/52 , C03C23/0025 , G11B5/8404
摘要： A magnetic recording disk with a glass substrate is textured by a process which creates an array of bumps in a magnetic head contact start and stop (CSS) region of the disk. The texturing process uses a laser to provide pulses of predetermined energy fluence on the glass substrate to produce a plurality of raised bumps in the substrate surface, each bump having a surface elevation controllable to within a few nanometers. The bumps are created without unwanted micro-cracking or ejection of surface material by exploiting a narrow operating region below the abrupt thermal shock fluence threshold of the glass substrate. This textured glass substrate provides the magnetic recording disk with improved stiction, wear, coatability and sensor flying height properties.
摘要翻译：具有玻璃基板的磁记录盘通过在磁盘的磁头接触起始和停止（CSS）区域中产生凸起阵列的过程而被纹理化。纹理化处理使用激光器在玻璃基板上提供预定能量注量的脉冲，以在基板表面中产生多个凸起的凸起，每个凸起具有可控制在几纳米内的表面高度。通过利用低于玻璃基板的突然热冲击能量密度阈值的窄工作区域，产生不产生不希望的微裂纹或表面材料喷射的凸块。这种纹理化的玻璃基板为磁记录盘提供了改善的粘性，磨损，涂布性和传感器飞行高度特性。

9. 再颁专利

USRE37145E1 Apparatus for laser texturing disks 有权
标题翻译：用于激光纹理化磁盘的装置
公开(公告)号：USRE37145E1
公开(公告)日：2001-04-24
申请号：US09374758
申请日：1999-08-13
申请人： Michael Barenboim , Peter Michael Baumgart , Peter Paul Chrusch , Benjamin Karni , Pieter J. M. Kerstens , Thao Anh Nguyen , Hong S. Seing , Andrew Ching Tam
发明人： Michael Barenboim , Peter Michael Baumgart , Peter Paul Chrusch , Benjamin Karni , Pieter J. M. Kerstens , Thao Anh Nguyen , Hong S. Seing , Andrew Ching Tam
IPC分类号： B23K2600
CPC分类号： G11B23/00 , B23K26/067 , B23K26/0823 , G11B5/6011 , G11B5/82 , G11B5/84 , G11B5/8404
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

US6108170A Slider row with segmented scribe lines for individual control curvature of sliders in the row 失效
标题翻译：滑块行，带有分段划线，用于单独控制行中滑块的曲率
公开(公告)号：US6108170A
公开(公告)日：2000-08-22
申请号：US189293
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： G01B11/30 , G11B5/10 , G11B5/60 , G11B21/21 , G11B33/10
CPC分类号： G11B21/21 , G01B11/306 , G11B5/6005 , G11B33/10 , G11B5/102 , Y10S977/932
摘要： A row of magnetic read/write sliders which have scribe lines on a back surface. The scribe lines provide an accurate curvature for the air bearing surface which is opposite the back surface. The row of sliders has segmented scribe lines which are discontinuous across the length of the row. Each slider may also have partial scribe lines, or simply a different pattern of scribe lines on the back surface. The present invention also includes a single slider with partial scribe lines which do not extend across the full width of the slider.
摘要翻译：一排磁性读/写滑块，在后表面上有划痕线。划痕线为与背面相对的空气轴承表面提供准确的曲率。这一排滑块具有分段划线，这些划线在行的长度上是不连续的。每个滑块还可以具有部分划线，或者简单地在背面上具有不同的划线图案。本发明还包括具有不延伸穿过滑块的整个宽度的部分划线的单个滑块。

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