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21. 发明授权

US06526639B2 Method for burnishing hard disks 失效
标题翻译：抛光硬盘的方法
公开(公告)号：US06526639B2
公开(公告)日：2003-03-04
申请号：US09944226
申请日：2001-08-30
申请人： Shanlin Duan , Wei-Ming Lee , Yu Lo
发明人： Shanlin Duan , Wei-Ming Lee , Yu Lo
IPC分类号： B24B3900
CPC分类号： G11B5/84 , Y10T29/47
摘要： The disk burnishing process is conducted with a contact flying burnishing head wherein the leading edge of the burnishing head is disposed above the surface of the disk, while the trailing edge of the burnishing head makes contact with the surface of the disk. The contact flying configuration of the burnishing head is obtained by controlling the rotating disk RPM in conjunction with the burnishing head design characteristics. In the contact flying burnishing process, the burnishing edges of the several burnishing pads of the head are disposed at different heights relative to the disk surface, such that the leading burnishing pad edges are higher than the trailing burnishing pad edges. In this configuration, high asperities are trimmed by the burnishing pads while low asperities are not. Thus, a disk is properly burnished for subsequent hard disk drive performance with a minimum of surface debris being created by the burnishing process.
摘要翻译：磁盘抛光工艺是用接触式飞边抛光头进行的，其中抛光头的前缘设置在盘的表面之上，而抛光头的后缘与盘的表面接触。抛光头的接触飞行构造是通过结合抛光头设计特性来控制旋转盘RPM获得的。在接触飞行抛光过程中，头部的几个抛光垫的抛光边缘相对于磁盘表面，使得引导的抛光焊盘边缘高于后抛光焊盘边缘。在这种配置中，高凹凸被抛光垫修剪，而低凹凸不平。因此，对于随后的硬盘驱动器性能，盘被适当地抛光，并且由抛光过程产生最少的表面碎屑。

22. 发明授权

US06357095B1 Hard disk burnishing head 失效
标题翻译：硬盘抛光头
公开(公告)号：US06357095B1
公开(公告)日：2002-03-19
申请号：US09360477
申请日：1999-07-23
申请人： Shanlin Duan , Wei-Ming Lee , Wai C. Leung
发明人： Shanlin Duan , Wei-Ming Lee , Wai C. Leung
IPC分类号： B24B3900
CPC分类号： G11B5/84 , Y10T29/47
摘要： The burnishing head for hard disk processing includes a solid body having generally rectangular surfaces, including an upper surface, a burnishing pad surface, a front surface, a rear surface and two side surfaces. A plurality of burnishing pads are disposed upon the burnishing pad surface. The pads are shaped such that each pad has a burnishing edge that is generally parallel to said front surface and therefore orthogonal to the direction of media travel. The burnishing pads are preferably configured such that one frontward leading pad is centrally disposed proximate the front surface of the head, followed by two middle pads that are disposed in a spaced apart relationship. A single centrally disposed rear middle pad is formed behind the two middle pads, and two rear pads are disposed in a spaced apart relationship at the rear surface of the head. In the preferred embodiment the pads are generally triangular in shape and the outer surface of the leading and rearward pads is tapered. The method for manufacturing the burnishing head, includes the steps of making a series of parallel cuts in a surface of a solid body of material. The burnishing pads result from material that remains following the cuts.
摘要翻译：用于硬盘处理的抛光头包括具有大致矩形表面的固体，其包括上表面，抛光垫表面，前表面，后表面和两个侧表面。多个抛光垫设置在抛光垫表面上。焊盘的形状使得每个焊盘具有通常平行于所述前表面并因此正交于介质行进方向的抛光边缘。抛光垫优选地被配置成使得一个前方的前垫靠近头部的前表面居中设置，随后是以间隔开的关系设置的两个中间垫。在两个中间垫的后面形成一个居中设置的后中间垫，并且两个后垫在头部的后表面以间隔开的关系设置。在优选实施例中，焊盘的形状通常为三角形，并且前部和后部焊盘的外表面是锥形的。抛光头的制造方法包括在固体物质的表面上进行一系列平行切割的步骤。抛光垫由切割后保留的材料产生。

23. 发明授权

US08618793B2 High sensitivity glide sensor using frictional heating 有权
标题翻译：使用摩擦加热的高灵敏度滑翔传感器
公开(公告)号：US08618793B2
公开(公告)日：2013-12-31
申请号：US12646831
申请日：2009-12-23
申请人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
发明人： Shanlin Duan , Jizhong He , John S. Hopkins , Kenneth E. Johnson
IPC分类号： G01R33/12 , G11B27/36 , G11B5/33
CPC分类号： G11B5/40 , G11B5/8404 , G11B20/10203 , G11B20/1816 , G11B27/36 , G11B2220/2516
摘要： A tool for testing a magnetic disk for use in a magnetic disk drive. The tool detects surface defects or asperities by detecting a change in electrical resistance corresponding to a temperature change in a thermally sensitive layer. The apparatus includes a slider body having a thermally insulating layer formed on an air bearing surface of the slider body and a thermal sensor layer formed on the thermally insulating layer. The thermally insulating layer prevents thermal heat spikes in the thermal sensor layer (such as resulting from contact with an asperity) from dissipating quickly into the slider body itself. The thermal sensor layer is a material that exhibits a change in electrical resistance in response to a change in temperature and is preferably a PTC thermistor material which exhibits a large change in electrical resistance when a transition temperature has been reached.
摘要翻译：用于测试用于磁盘驱动器的磁盘的工具。该工具通过检测对应于热敏层的温度变化的电阻变化来检测表面缺陷或粗糙度。该装置包括：滑动体，其具有形成在滑块体的空气轴承表面上的绝热层和形成在绝热层上的热传感器层。隔热层防止热传感器层中的热热尖峰（例如由于与粗糙度的接触而导致的））快速消散到滑块体本身。热传感器层是响应于温度变化而呈现电阻变化的材料，优选是当达到转变温度时电阻变化很大的PTC热敏电阻材料。

24. 发明申请

US20120113538A1 SIMULATING DISCRETE TRACK MEDIA WITH CONTINUOUS MEDIA FOR HEAD EVALUATION 有权
标题翻译：用连续介质模拟离散跟踪介质进行头部评估
公开(公告)号：US20120113538A1
公开(公告)日：2012-05-10
申请号：US12941482
申请日：2010-11-08
申请人： Kezhao Zhang , Jizhong He , Shanlin Duan , Jane Jie Zhang , Zhupei Shi
发明人： Kezhao Zhang , Jizhong He , Shanlin Duan , Jane Jie Zhang , Zhupei Shi
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B5/455 , G11B5/743 , G11B2220/2516
摘要： Approaches for a testing device for selecting a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). The testing device comprises a continuous magnetic-recording disk, rotatably mounted on a spindle, which stores data using a continuous media format. The testing device also comprises a testing module configured to simulate reading data, stored using a discrete track media (DTM) format, from the continuous magnetic-recording medium. Advantageously, testing time and cost is reduced as both discrete track media (DTM) disks and expensive discrete track media (DTM) recording testing hardware are not required to select the optimal a discrete track media (DTM) format for use with a particular head of a hard-disk drive (HDD). In addition, embodiments may be used to optimize features of the tracks of the DTM disk, such as the land to groove ratio.
摘要翻译：用于选择与硬盘驱动器（HDD）的特定头部一起使用的离散轨道介质（DTM）格式的测试设备的方法。测试装置包括可旋转地安装在主轴上的连续磁记录盘，其使用连续的媒体格式存储数据。测试装置还包括被配置成模拟从连续磁记录介质中使用离散轨道介质（DTM）格式存储的读取数据的测试模块。有利的是，测试时间和成本被降低，因为不需要离散轨道介质（DTM）盘和昂贵的离散轨道介质（DTM）记录测试硬件来选择最佳的离散轨道介质（DTM）格式，以用于特定的头硬盘驱动器（HDD）。此外，可以使用实施例来优化DTM盘的轨道的特征，例如陆地与凹槽之比。

25. 发明申请

US20110026167A1 REDUCING SLIDER BOUNCE IN A HARD DISK DRIVE 有权
标题翻译：减少硬盘驱动器中的滑块
公开(公告)号：US20110026167A1
公开(公告)日：2011-02-03
申请号：US12511840
申请日：2009-07-29
申请人： Shanlin Duan , Jizhong He , John Stephen Hopkins
发明人： Shanlin Duan , Jizhong He , John Stephen Hopkins
IPC分类号： G11B5/48
CPC分类号： G11B5/6005 , G11B5/102 , G11B5/40
摘要： Reducing slider bounce within a hard disk drive. A force is received at a first material while the first material is in contact with a disk of a hard disk drive; the first material comprising a portion that is flexible in a first direction and is substantially non-flexible in a second direction. The first direction is a direction that is normal to the disk and the second direction is a direction that is parallel to a surface of the disk. The force is substantially absorbed by the portion that is flexible to reduce the force associated with interaction between the first material and the disk, thereby reducing slider bounce within the hard disk drive
摘要翻译：减少滑块在硬盘驱动器内弹起。当第一材料与硬盘驱动器的盘接触时，在第一材料处接收力; 所述第一材料包括在第一方向上是柔性的并且在第二方向上基本上不柔性的部分。第一方向是与盘垂直的方向，第二方向是平行于盘的表面的方向。该力基本上被柔性部分吸收，以减少与第一材料和盘之间的相互作用相关联的力，从而减少硬盘驱动器内的滑块反弹

26. 发明申请

US20100142344A1 METHOD FOR DIRECT HEAD-DISK CLEARANCE MEASUREMENT BY SLIDER VIBRATION AND FLY HEIGHT CALIBRATION 审中-公开
标题翻译：通过滑块振动和飞行高度校准进行直接头盘间隙测量的方法
公开(公告)号：US20100142344A1
公开(公告)日：2010-06-10
申请号：US12709554
申请日：2010-02-22
申请人： Shanlin Duan , Jizhong He , John Stephen Hopkins , Yansheng Luo
发明人： Shanlin Duan , Jizhong He , John Stephen Hopkins , Yansheng Luo
IPC分类号： G11B27/36
CPC分类号： G11B5/6005
摘要： A method models and calibrates the fly height of a slider above the disk for disk drives. The calibration scheme uses the Wallace spacing loss equation and laser doppler velocimetry to predict fly height and detect the actual fly height of the slider. The slider is vibrated at selected resonances, such as by capacitive coupling to the disk, and the fly height is gradually reduced. In one version, contact between the slider and disk may be detected using an arm electronics sensor. The amplitude of mean-to-peak, vibration detection is used as an indication of the actual fly height and to calibrate the modeled fly height.
摘要翻译：一种方法建模和校准磁盘驱动器磁盘上方的浮动高度。校准方案使用华莱士间距损失方程和激光多普勒测速来预测飞行高度并检测滑块的实际飞行高度。滑块以所选择的谐振振动，例如通过电容耦合到盘，并且飞行高度逐渐减小。在一个版本中，可以使用臂电子传感器来检测滑块和盘之间的接触。使用平均峰值振幅检测的幅度作为实际飞行高度的指示，并校准建模的飞行高度。

27. 发明申请

US20100020442A1 One magnetic sided media for low cost and low capacity applications 有权
标题翻译：一种用于低成本和低容量应用的磁双面介质
公开(公告)号：US20100020442A1
公开(公告)日：2010-01-28
申请号：US12220238
申请日：2008-07-22
申请人： Shanlin Duan , Kenneth Johnson , Owen Melroy
发明人： Shanlin Duan , Kenneth Johnson , Owen Melroy
IPC分类号： G11B5/82 , B05D5/12
CPC分类号： G11B5/82 , G11B5/64 , G11B5/7325 , G11B5/855
摘要： One-sided magnetic media for a hard disk drive. Methods are implemented to create a magnetic media with only one surface capable of recording data. The second surface is a non-data recording side of the media and is constructed so that it does not interfere with the recording properties of the recording side or the structural usefulness of the media. Additionally, the second surface can be a low quality surface capable of limited magnetic recording.
摘要翻译：用于硬盘驱动器的单面磁性介质。实现方法来创建仅具有能够记录数据的一个表面的磁介质。第二表面是介质的非数据记录侧，并且被构造成使其不干扰记录侧的记录特性或介质的结构有用性。此外，第二表面可以是能够限制磁记录的低质量表面。

28. 发明申请

US20090165539A1 GLIDE TEST HEADS USING HEATING ELEMENTS TO FORM A PLANAR DETECTION SURFACE 有权
标题翻译：使用加热元件形成平面检测表面的测试头
公开(公告)号：US20090165539A1
公开(公告)日：2009-07-02
申请号：US11964688
申请日：2007-12-26
申请人： Shanlin Duan , Jizhong He , Bruno Marchon , Ullal V. Nayak
发明人： Shanlin Duan , Jizhong He , Bruno Marchon , Ullal V. Nayak
IPC分类号： G01B5/28 , G01R33/12
CPC分类号： G11B5/455 , G11B5/3136
摘要： Glide test systems and associated methods are described. A glide test system includes a glide test head that is flown over the surface of a recording disk to detect asperities on the recording disk. The glide test head includes a detection pad on the trailing end of the head. Heating elements are fabricated proximate to the detection pad. The heating elements are independently controllable to control the amount of protrusion of different regions of the detection pad. The heating elements thus provide a way to substantially flatten the detection surface of the detection pad, and compensate for an uneven topography on a detection surface.
摘要翻译：描述了滑翔测试系统和相关方法。滑行测试系统包括滑动测试头，其在记录盘的表面上流动以检测记录盘上的凹凸。滑行测试头包括头部尾端上的检测垫。在检测板附近制造加热元件。加热元件可独立控制，以控制检测垫的不同区域的突出量。因此，加热元件提供了使检测焊盘的检测表面基本平坦化并且补偿检测表面上不均匀的形貌的方法。

29. 发明授权

US07271967B2 System and method for determining whether defect in perpendicular recording disk drive is from thermal asperity or defect in magnetically soft underlayer 失效
标题翻译：用于确定垂直记录盘驱动器中的缺陷是否由磁性软底层的热凹凸或缺陷的系统和方法
公开(公告)号：US07271967B2
公开(公告)日：2007-09-18
申请号：US10975259
申请日：2004-10-28
申请人： Zhupei Shi , Li Tang , Jane Jie Zhang , Shanlin Duan
发明人： Zhupei Shi , Li Tang , Jane Jie Zhang , Shanlin Duan
IPC分类号： G11B27/36 , G11B5/02
CPC分类号： G11B19/04 , G11B5/4555 , G11B20/1816
摘要： A method for determining whether a spike in a read back signal from a read head positioned over a perpendicular recording disk having a magnetically soft underlayer (SUL) is caused by a defect in the SUL or by a thermal asperity (TA). A first read back signal with the spike is obtained in the absence of a local magnetic field near the read head. Then, a permanent magnet or electromagnet is used to induce a small local magnetic field by the read head, and a second signal is obtained. If the signals are substantially similar, a thermal asperity is indicated. Otherwise a defect in the 13 magnetically soft underlayer of the disk is indicated.
摘要翻译：一种用于确定来自位于具有磁软底层（SUL）的垂直记录盘上的读头的回读信号中的尖峰是否由SUL中的缺陷或由热凹凸（TA）引起的方法。在读磁头附近没有局部磁场的情况下获得具有尖峰的第一回读信号。然后，使用永磁体或电磁体通过读取头来引起小的局部磁场，并获得第二信号。如果信号基本相似，则表示热不均匀性。否则表示磁盘的13个软磁性底层的缺陷。

30. 发明授权

US06662623B2 Apparatus and method for glide height calibration of disk surfaces by use of dual-zone laser texture 失效
标题翻译：使用双区域激光纹理的盘表面滑移高度校准的装置和方法
公开(公告)号：US06662623B2
公开(公告)日：2003-12-16
申请号：US09957291
申请日：2001-09-20
申请人： Bradley Frederick Baumgartner , James Hammond Brannon , Jorge Daniel Colonia , Huyen D. Do , Shanlin Duan , Connie H. Moy , Hang Fai Ngo , Yu Lo
发明人： Bradley Frederick Baumgartner , James Hammond Brannon , Jorge Daniel Colonia , Huyen D. Do , Shanlin Duan , Connie H. Moy , Hang Fai Ngo , Yu Lo
IPC分类号： G11B582
CPC分类号： G01B11/14 , G11B23/0021 , G11B33/10 , Y10S977/881 , Y10S977/932
摘要： A disk for calibrating glide heads utilizes a dual-zone configuration of multiple laser melt bumps having selected heights. Averaging the PZT response over many bumps significantly narrows the response distribution, resulting in greater certainty and correlation of the PZT amplitude to bump height. The multiple calibration bumps are circumferentially arranged on a disk surface at a selected radius in a ring-like manner. A second head cleaning zone is provided near the inner diameter of the disk to provide for increased reproducibility of the PZT calibration response. The second zone is densely textured and serves to clean the glide head prior to its use in the calibration zone.
摘要翻译：用于校准滑行头的盘利用具有选定高度的多个激光熔融凸块的双区配置。在许多凸起上平均PZT响应显着缩小了响应分布，导致PZT振幅与凸块高度的更大的确定性和相关性。多个校准凸块以环状方式周向地布置在选定半径的盘表面上。在盘的内径附近提供第二头清洁区，以提供PZT校准响应的增加的再现性。第二个区域是密集纹理的，用于在使用前在校准区域清洁滑动头。

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