公开(公告)号：EP0834870B1

公开(公告)日：2004-04-14

申请号：EP97306433.0

申请日：1997-08-22

申请人： Hitachi Global Storage Technologies Netherlands B.V.

发明人： Reinhart, Robert C.

IPC分类号： G11B5/54 ,  G11B21/22

CPC分类号： G11B21/22 ,  G11B5/54 ,  G11B5/6011

公开(公告)号：EP0962932A3

公开(公告)日：2002-01-02

申请号：EP99201749.1

申请日：1999-06-02

申请人： Texas Instruments Incorporated

发明人： Pollalis, Dino J. ,  Aralis, James ,  Helsel, Dave

IPC分类号： G11B21/21 ,  G11B5/60

CPC分类号： G11B21/21 ,  G11B5/6011 ,  G11B33/10

摘要： The present invention includes a circuit and method for determining fly height based upon the PW50. A signal is used to provide a measure of PW50 by detecting the peak height and the area of the signal. The ratio of the peak height and area provides an indication of PW50 and correspondingly, the fly height.

公开(公告)号：EP0834870A1

公开(公告)日：1998-04-08

申请号：EP97306433.0

申请日：1997-08-22

申请人： International Business Machines Corporation

发明人： Reinhart, Robert C.

IPC分类号： G11B5/54 ,  G11B21/22

CPC分类号： G11B21/22 ,  G11B5/54 ,  G11B5/6011

摘要： A disk drive magnetic actuator latch mechanism for use in hard disk drives. The present invention discloses a latch mechanism which includes a latch lever having a magnetic member attached to or moulded into each end of the lever. The lever is pivotally mounted about a pivot pin in the vcm assembly. The magnet member located on the latch lever tail is positioned between the vcm magnets when the mechanism is in the latched state. The unlatching force is provided by the presence of the magnetic member in the vcm gap, as the attraction of the member in the vcm field resists rotation of the latch lever.

摘要翻译： 用于硬盘驱动器的磁盘驱动器磁致动器锁定机构。 本发明公开了一种闩锁机构，其包括具有连接到杠杆的每个端部或者模制在杠杆的每一端的磁性构件的闩锁杆。 杠杆围绕vcm组件中的枢轴销可枢转地安装。 当机构处于锁定状态时，位于闩锁杆尾部的磁体构件定位在vcm磁体之间。 由于磁性构件在vcm间隙中的存在，由于构件在vcm区域中的吸引力抵抗闩锁杆的旋转而提供解锁力。

公开(公告)号：EP0767457A2

公开(公告)日：1997-04-09

申请号：EP96119605.2

申请日：1991-01-18

申请人： SHARP KABUSHIKI KAISHA

发明人： Nakayama, Junichiro ,  Miyake, Tomoyuki ,  Katayama, Hiroyuki ,  Ohta, Kenji

IPC分类号： G11B11/10 ,  G11B21/21 ,  G11B5/60

CPC分类号： G11B5/6005 ,  G11B5/40 ,  G11B5/6011 ,  G11B5/6082 ,  G11B11/1058 ,  G11B23/505 ,  G11B33/148

摘要： A magneto-optical recording device has a flying head that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on both sides of the bottom surface of the head slider, since the magneto-optical disk comes into contact with the head smoothly, the reliability and the durability of the magneto-optical recording device can improve.

公开(公告)号：EP2951829A4

公开(公告)日：2016-09-28

申请号：EP13873375

申请日：2013-01-31

申请人： HEWLETT PACKARD ENTPR DEV LP

发明人： HOLMBERG MIKE ALAN ,  SPRATT GEOFF ,  BRONG BRIAN ,  SHARROCK MIKE ,  BRITTENHAM STEVEN L ,  SWANBECK SCOTT A ,  PETERSEN ERIC ,  HANSEN LAWRENCE A ,  POORMAN PAUL W

IPC分类号： G11B5/02 ,  G11B5/00 ,  G11B5/008 ,  G11B5/09 ,  G11B5/39 ,  G11B5/60 ,  G11B5/78 ,  G11B20/10

CPC分类号： G11B5/00813 ,  G11B5/00826 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/6011 ,  G11B5/78 ,  G11B20/10287 ,  G11B2005/0021

公开(公告)号：EP1978510B1

公开(公告)日：2010-01-20

申请号：EP08153505.6

申请日：2008-03-28

申请人： Samsung Electronics Co., Ltd.

发明人： Park, Jong-Iak

IPC分类号： G11B5/60 ,  G11B5/31

CPC分类号： G11B5/3133 ,  G11B5/3136 ,  G11B5/6011 ,  G11B5/6064

公开(公告)号：EP0953548B1

公开(公告)日：2006-05-03

申请号：EP98935292.7

申请日：1998-07-30

申请人： HOYA CORPORATION

发明人： HASHIMOTO, Kazuaki, Hoya Corporation ,  ZOU, Xuelu, Hoya Corporation

IPC分类号： C03C3/087 ,  C03C3/095 ,  G11B5/64 ,  G11B5/84 ,  C03B11/06

CPC分类号： G11B5/7315 ,  C03C3/078 ,  C03C3/087 ,  C03C3/095 ,  G11B5/6011 ,  G11B5/82 ,  G11B5/8404 ,  G11B23/0028

摘要： A method of producing a glass substrate for an inforamtion recordeing medium either by press-molding molten glass obtained from glass containing 0.1 to 30 mol.% of TiO2. 1 to 45 mol.% of CaO, 5 to 40 mol.% of the sum of MgO and CaO described above, 3 to 30 mol.% of the sum of Na2O and Li2O. 0 to 15 mol.% of Al2O3 and 35 to 65 mol.% of SiO2 and having a liquidus temperature of not higher than 1,360 °C, a viscosity of at least 10 poises within a moldable temperature range and a transition point temperature of lower than 700 °C, or by preparing a preform of glass containing 0.1 to 30 mol.% of TiO2, 1 to 45 mol.% of CaO, 5 to 40 mol.% of the sum of MgO and CaO described above, 3 to 30 mol.% of the sum of Na2O and Li2O, 0 to 15 mol.% of Al2O3 and 35 to 65 mol.% of SiO2 and having a liquidus temperature of not higher than 1,360 °C, and shaping the preform into a disk by re-heat pressing.

公开(公告)号：EP0858070B1

公开(公告)日：2005-12-28

申请号：EP97935862.9

申请日：1997-08-22

申请人： SONY CORPORATION ,  NIPPON ZEON CO., LTD.

发明人： OYANAGI, Eiki, Sony Corporation ,  SASA, Takeshi, Sony Corporation ,  IMAI, Yasuyuki, Sony Corporation ,  TAKINO, Hiroshi, Sony Corporation ,  KOHARA, Teiji, Nippon Zeon Co., Ltd. ,  OSHIMA, Masayoshi, Nippon Zeon Co., Ltd

IPC分类号： G11B5/82 ,  G11B5/64 ,  G11B5/84 ,  G11B23/00

CPC分类号： G11B23/0021 ,  B29C70/64 ,  C08F32/04 ,  G11B5/59633 ,  G11B5/6011 ,  G11B5/7315 ,  G11B5/82 ,  G11B5/8404 ,  G11B21/21 ,  Y10S428/913 ,  Y10T428/21

摘要： A disc medium substrate which is made of resin and used for a disc, for instance a magnetic disc, on/from which information is recorded/reproduced with a floating head. Protrusions higher than 50 nm are not formed on the surface of the substrate which is scanned by the floating head. The substrate is so molded that the number of particles in the molding material whose particle diameters are larger than 5 mu m is not more than 10000/g. The molding can be injection molding. Thermoplastic norvolnene system resin can be employed as the molding material. Projections and recesses corresponding to recording tracks may be provided on the substrate.

公开(公告)号：EP0438315A2

公开(公告)日：1991-07-24

申请号：EP91300385.1

申请日：1991-01-18

申请人： SHARP KABUSHIKI KAISHA

发明人： Nakayama, Junichiro ,  Miyake, Tomoyuki ,  Katayama, Hiroyuki ,  Ohta, Kenji

IPC分类号： G11B11/10 ,  G11B5/10

CPC分类号： G11B5/6005 ,  G11B5/40 ,  G11B5/6011 ,  G11B5/6082 ,  G11B11/1058 ,  G11B23/505 ,  G11B33/148

摘要： A magneto-optical recording device has a flying head (11) that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant (13) is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on both sides of the bottom surface of the head slider, since the magneto-optical disk comes into contact with the head smoothly, the reliability and the durability of the magneto-optical recording device can improve.

摘要翻译： 磁光记录装置具有根据磁光盘的旋转漂浮在磁光盘上的飞行头（11）。 飞行头包括一个头滑块。 将固体润滑剂（13）施加到面向磁光盘的磁头滑动器的底表面上。 由于固体润滑剂使飞行头平稳地与磁光盘接触，所以磁光盘和飞行头的刮擦和磨损减小。 因此，可以提高磁光记录装置的可靠性和耐久性。 可以形成其中包含碳氟化合物油的物理突起和凹陷或孔而不是固体润滑剂。 在这种情况下，飞行头和磁光盘之间的接触面积也小于没有形成物理突起和凹陷的情况。 另外，由于磁头光盘的底面两侧形成有润滑性优良的由氟树脂构成的薄膜层，因此光磁盘与磁头平滑地接触，因此， 可提高磁光记录装置的可靠性和耐久性。

公开(公告)号：EP2591471B1

公开(公告)日：2017-05-10

申请号：EP11801887.8

申请日：2011-11-17

申请人： Seagate Technology LLC

发明人： JOHNSON, Michael T. ,  LIU, Dongming ,  LOU, Huazhou ,  KUNKEL, Gary J. ,  MACKEN, Declan ,  STOEBE, Timothy W. ,  ZHENG, Xuan

IPC分类号： G11B5/60 ,  G11B5/31 ,  G11B20/10 ,  G11B27/36

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： 由磁头传感器支持的传感器具有电阻温度系数（TCR）和传感器电阻。 传感器在环境温度以上运行，并对传感器介质间距的变化作出响应。 连接到传感器的导电触点具有接触电阻并且与传感器相邻的横截面积大于传感器的横截面积，使得接触电阻相对于传感器电阻较小并且可忽略地对由传感器产生的信号作出贡献。 多个头部换能器各自支持TCR传感器，并且电源可以为每个头部的每个传感器提供偏置功率，以在传感器变化影响传感器的情况下将每个传感器维持在高于环境温度的固定温度。 磁头换能器的TCR传感器可以包括用于检测介质的一个或两个凹凸的轨道导向的TCR传感器导线。