[n: Specially Adapted For Disk Drive Assemblies, E.g. Assembly Prior To Operation, Hard Or Flexible Disk Drives (g9b/5.156 To G9b/5.181 Take Precedence)] [n9605] {g11b 5/48a} Patents (Class G9B/5.148)
  • Publication number: 20130250456
    Abstract: According to one embodiment, a magnetic recording head includes a main pole, a trailing shield opposing the main pole with a write gap therebetween, and a high-frequency oscillator between a distal end portion of the main pole and the trailing shield configured to produce a high-frequency magnetic field. The high-frequency oscillator includes a lower end surface facing the recording medium and an upper end surface substantially parallel to the lower end surface. The width of the lower end surface in a track-width direction is smaller than that of the upper end surface.
    Type: Application
    Filed: August 14, 2012
    Publication date: September 26, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenichiro YAMADA, Yusuke TOMODA, Tomoko TAGUCHI, Katsuhiko KOUI
  • Publication number: 20100177440
    Abstract: Foundation layers of a thin film magnetic head are disposed between insulating layers and bias magnetic field application layers, and are configured of Cr or Cr alloy. The insulating layers are configured of a Si oxide such that the Si content of the Si oxide is in the range of 30˜56 at % (atom %) and that the atom ratio of oxygen to Si (O/Si) is in the range of 0.8˜1.3. With the configuration, the occurrence rate of noise is reduced.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 15, 2010
    Applicant: TDK CORPORATION
    Inventors: Takayasu Kanaya, Kei Hirata, Yohei Koyanagi, Seiichi Takayama, Shinji Hara, Toshiyuki Ayukawa
  • Publication number: 20100079895
    Abstract: Provided is a plasmon antenna in which a near-field light having a sufficient intensity is generated only in a desired location. The plasmon antenna comprises an end surface on a side where a near-field light is generated; the end surface is flat and has a shape with at least three vertexes or rounded corners; and an end surface of the plasmon antenna which is opposite to the flat end surface and receives light, is inclined with respect to the flat end surface so as to become closer to the flat end surface toward one of the at least three vertexes or rounded corners. When the light-receiving end surface of the plasmon antenna is irradiated with the light, a near-field light having a sufficient intensity can be generated at only the vertex or rounded corner toward which the entire plasmon antenna becomes thinner.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 1, 2010
    Applicant: TDK Corporation
    Inventors: Seiichi Takayama, Eiji Komura, Kosuke Tanaka, Daisuke Miyauchi, Koji Shimazawa
  • Publication number: 20090168249
    Abstract: Systems and methods for flexure based shock and vibration sensor for head suspensions in hard disk drives. Specifically, this invention deals with operational shock and vibration management within a hard disk drive. In one implementation, the assembly includes a circuit embedded optical waveguide sensor that includes a flexible electrical circuit board with a configuration of either a single or multi layers of conductor traces, a thin flexure gimbal for carrying and flying a HDD slider, a consecutive sensing layer constructed by an optical core and by clad construction with a configuration of either a single core array or a plural core array, an optical loop formed by light input and an output core, optical grating disposed on the consecutive sensing layer forming an optical grating waveguide sensor, a light emitter for injecting light into the optical core, and a receiver receiving the output light from the optical core.
    Type: Application
    Filed: November 26, 2008
    Publication date: July 2, 2009
    Applicant: NITTO DENKO CORPORATION
    Inventors: Martin John McCaslin, Visit Thaveeprungsriporn, Szu-Han Hu
  • Publication number: 20090168233
    Abstract: To efficiently manufacture a feedthrough used in a disk drive device having a hermetically sealed enclosure, embodiments of the present invention manufacture a feedthrough used in an HDD having a hermetically sealed enclosure. An embodiment of a manufacturing method of the present embodiment manufactures a columnar body, cuts the columnar body in the direction vertical to the axes of pins, and cuts out a feedthrough. Then, necessary plating is made on the outer surfaces of the cut out feedthrough. The columnar body comprises a hollow tube, a plurality of pins inserted inside the tube, and an insulating sealant filled inside the tube. This manufacturing method achieves efficient manufacture of the feedthrough.
    Type: Application
    Filed: November 21, 2008
    Publication date: July 2, 2009
    Inventors: Takashi Kouno, Akihiko Aoyagi, Kazuhide Ichikawa, Teruhiro Nakamiya