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公开(公告)号：US20240312479A1
公开(公告)日：2024-09-19
申请号：US18458923
申请日：2023-08-30
Inventor： Masayuki KONDO
CPC classification number: G11B5/00821 , G11B5/4961 , G11B5/581 , G11B5/59638 , G11B2005/0021
Abstract: According to one embodiment, a magnetic disk device which supplies, at the time of startup of data write or startup of data read, electric power higher than steady electric power used to make, in advance, spacing between a magnetic disk and a magnetic head become saturated at a target value to a heater of the magnetic head for a specified time and, after an elapse of the specified time, gradually reduces the electric power to be supplied to the heater of the magnetic head to the steady electric power.
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公开(公告)号：US09330714B2
公开(公告)日：2016-05-03
申请号：US14818335
申请日：2015-08-05
Applicant: International Business Machines Corporation
Inventor： Robert G. Biskeborn , Calvin S. Lo , Tak H. Wong , Xu Yan
CPC classification number: G11B5/60 , G11B5/00813 , G11B5/02 , G11B5/455 , G11B5/581 , G11B20/10305 , G11B20/10388 , G11B20/10472 , G11B20/18 , G11B27/36
Abstract: A supplemental module that includes one or more read elements periodically engages a magnetic recording medium, and the read elements generate an electrical signal corresponding to transitions written to the magnetic recording medium by a write element. A computer receives information representative of the electrical signal and determines if a quality metric of the magnetic recording medium derived from the electrical signal is within a defined range. If the quality metric is not within the defined range, a defined action is performed by the computer.
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公开(公告)号：US20140254040A1
公开(公告)日：2014-09-11
申请号：US14165906
申请日：2014-01-28
Applicant: Seagate Technology LLC
Inventor： Dongming Liu , Kenneth Haapala , Scott E. Ryun , Lin Zhou
IPC: G11B5/58
CPC classification number: G11B5/581 , G11B5/607 , G11B5/6076
Abstract: An apparatus includes a head transducer configured to interact with a magnetic recording medium and a heater configured to thermally actuate the head transducer. A thermal sensor at or near the head transducer is configured to produce a sensor signal. Circuitry is coupled to the heater and configured to cause an oscillation in heater power. The heater power oscillation causes an oscillation in the sensor signal. A detector is coupled to the thermal sensor and configured to detect head-medium contact using the oscillating sensor signal and heater power.
Abstract translation: 一种装置包括：头部换能器，被配置为与磁记录介质相互作用;以及加热器，其被配置为热致动头部换能器。 在头部传感器处或附近的热传感器被配置成产生传感器信号。 电路耦合到加热器并且被配置为引起加热器功率的振荡。 加热器功率振荡导致传感器信号的振荡。 检测器耦合到热传感器并且被配置为使用振荡传感器信号和加热器功率检测头 - 介质接触。
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公开(公告)号：US20140002928A1
公开(公告)日：2014-01-02
申请号：US13918123
申请日：2013-06-14
Applicant: International Business Machines Corporation
Inventor： Laurent A. Dellmann , Johan B.C. Engelen , Simeon Furrer , Mark A. Lantz , Hugo E. Rothuizen
IPC: G11B15/64
CPC classification number: G11B15/64 , G11B5/00826 , G11B5/581
Abstract: A tape head system includes a read and/or write head having at least one read and/or write element configured to read from and/or write to magnetic tape and at least one electrostatic element arranged adjacent to the read and/or write element; and a controller configured to apply a potential to the at least one electrostatic element.
Abstract translation: 磁头系统包括具有至少一个读取和/或写入元件的读取和/或写入头部，该读取和/或写入元件被配置为从磁带读取和/或写入至少一个与读取和/或写入元件相邻布置的静电元件; 以及控制器，被配置为向所述至少一个静电元件施加电位。
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公开(公告)号：US08144432B2
公开(公告)日：2012-03-27
申请号：US11948022
申请日：2007-11-30
Applicant: Rick Pfahl Freeman , Michael H. Lennard , Andy M. Motzko
Inventor： Rick Pfahl Freeman , Michael H. Lennard , Andy M. Motzko
CPC classification number: G11B5/56 , G11B5/4846 , G11B5/581 , G11B5/583
Abstract: An actuator for selectively positioning a portion of a communication channel formed by a cable circuit having a protuberant component connected at a proximal end to a flexible base, whereby the actuator defines a heat transfer surface operably disposed in thermal conductivity with a distal surface of the protuberant component for sinking heat from the component to the actuator.
Abstract translation: 用于选择性地定位由具有在近端连接到柔性基座的突起部件的电缆电路形成的连通通道的一部分的致动器，由此所述致动器限定可传导导热性的传热表面与所述突出部的远端表面 用于将热量从部件下沉到致动器的部件。
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Patent Agency Ranking
公开(公告)号：US07738211B2
公开(公告)日：2010-06-15
申请号：US12261710
申请日：2008-10-30
Applicant: Kazuhiro Oyamada , Koji Ishii
Inventor： Kazuhiro Oyamada , Koji Ishii
CPC classification number: G11B33/1406 , G11B5/40 , G11B5/455 , G11B5/581 , G11B5/6064 , G11B5/607 , G11B33/1486
Abstract: A magnetic disk apparatus has a heater for heating a head incorporated in the magnetic disk apparatus, an atmospheric pressure detector for detecting a change in atmospheric pressure in the magnetic disk apparatus, and an adjuster for adjusting a thermal dose supplied to the head by the heater according to the change in atmospheric pressure detected by the atmospheric pressure detector.
Abstract translation: 磁盘装置具有用于加热装在磁盘装置中的磁头的加热器，用于检测磁盘装置中的大气压力变化的大气压检测器，以及用于通过加热器调节供给头部的热剂量的调节器 根据大气压力检测器检测到的大气压力的变化。
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公开(公告)号：US07474504B2
公开(公告)日：2009-01-06
申请号：US11256965
申请日：2005-10-25
Applicant: Junguo Xu , Ryuji Tsuchiyama , Mikio Tokuyama , Masaaki Matsumoto
Inventor： Junguo Xu , Ryuji Tsuchiyama , Mikio Tokuyama , Masaaki Matsumoto
IPC: G11B5/00
CPC classification number: G11B5/40 , G11B5/012 , G11B5/105 , G11B5/488 , G11B5/54 , G11B5/5565 , G11B5/58 , G11B5/581 , G11B5/607 , G11B2005/0013
Abstract: A magnetic head slider including: a head element which records or reproduces information on a magnetic disk, a slider having said head element, and an electric conducting film in which paired first and second parts are formed to be substantially parallel, where current flows within said first and second parts are in the opposite direction as against said slider.
Abstract translation: 一种磁头滑动器，包括：记录或再现磁盘上的信息的头元件，具有所述头元件的滑块和导电膜，其中成对的第一和第二部分形成为大致平行，其中电流在所述 第一和第二部分与所述滑块相反的方向。
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公开(公告)号：US20080060186A1
公开(公告)日：2008-03-13
申请号：US11517701
申请日：2006-09-08
Applicant: Brett Robert Herdendorf , Ronald Eldon Anderson
Inventor： Brett Robert Herdendorf , Ronald Eldon Anderson
CPC classification number: G11B5/455 , G11B5/581 , G11B5/6017 , G11B21/21 , Y10T29/49025 , Y10T29/53165
Abstract: A device comprises a mounting surface configured to mount a head gimbal assembly (HGA), a housing that pivots relative to the mounting surface, and a mechanism coupled to the housing that deflects the HGA when the housing pivots relative to the mounting surface. For example the mechanism may be a pneumatically actuated finger that pulls the HGA towards the housing. The device may be used to load the HGA on a rotating test disc. Once loaded on the test disc, the HGA is supported only by the mounting surface and an air bearing at an interface of a slider of the HGA and the test disc. Embodiments of the invention may provide precise and repeatable positioning of the HGA because dimensional tolerances and vibrations in the mechanism are not transferred to the HGA once it is loaded on the test disc.
Abstract translation: 一种装置包括安装表面，该安装表面被配置成安装头部万向架组件（HGA），相对于安装表面枢转的壳体，以及联接到壳体的机构，当壳体相对于安装表面枢转时，该装置偏转HGA。 例如，机构可以是气动致动的手指，其将HGA拉向壳体。 该装置可用于将HGA加载到旋转测试盘上。 一旦加载在测试盘上，HGA仅由安装表面和HGA滑块和测试盘的接口处的空气轴承支撑。 本发明的实施例可以提供HGA的精确和可重复的定位，因为一旦装载在测试盘上，机构中的尺寸公差和振动就不会转移到HGA。
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公开(公告)号：US20070003792A1
公开(公告)日：2007-01-04
申请号：US11170035
申请日：2005-06-29
Applicant: Mark Covington , Ganping Ju , Werner Scholz , Michael Minor
Inventor： Mark Covington , Ganping Ju , Werner Scholz , Michael Minor
CPC classification number: G11B5/667 , G11B5/1278 , G11B5/581 , G11B5/6005 , Y10T428/115 , Y10T428/1186
Abstract: A magnetic recording system is disclosed in which the magnetization dynamics of the write head and recording medium are highly damped. The system may comprise a perpendicular recording head having a write pole, and a recording medium including a hard magnetic recording layer and a soft magnetic underlayer (SUL). The increased magnetic damping in the write pole and SUL suppresses precessional motion of the respective magnetizations, leading to a reduction in transition jitter caused by spurious head field fluctuations. The damping may be increased by providing films or multilayer structures that are doped with rare earth or transition metal elements. Exchange coupled laminates of doped and undoped layers may optimize both the effective damping and write field in the recording system.
Abstract translation: 公开了一种磁记录系统，其中写头和记录介质的磁化动力学被高度阻尼。 该系统可以包括具有写入极的垂直记录头和包括硬磁记录层和软磁性底层（SUL）的记录介质。 写入磁极和SUL中的增加的磁阻抑制了相应磁化的进动运动，导致由杂散磁头场波动引起的转换抖动的减小。 可以通过提供掺杂有稀土或过渡金属元素的膜或多层结构来增加阻尼。 掺杂和未掺杂层的交换耦合层压板可以优化记录系统中的有效阻尼和写入场。
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公开(公告)号：US20060039077A1
公开(公告)日：2006-02-23
申请号：US11256965
申请日：2005-10-25
Applicant: Junguo Xu , Ryuji Tsuchiyama , Mikio Tokuyama , Masaaki Matsumoto
Inventor： Junguo Xu , Ryuji Tsuchiyama , Mikio Tokuyama , Masaaki Matsumoto
IPC: G11B21/02
CPC classification number: G11B5/40 , G11B5/012 , G11B5/105 , G11B5/488 , G11B5/54 , G11B5/5565 , G11B5/58 , G11B5/581 , G11B5/607 , G11B2005/0013
Abstract: A magnetic head slider including: a head element which records or reproduces information on a magnetic disk, a slider having said head element, and an electric conducting film in which paired first and second parts are formed to be substantially parallel, where current flows within said first and second parts are in the opposite direction as against said slider.
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