Adjustment Parallel To Disk Plane Patents (Class 360/294.1)
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Patent number: 10877524Abstract: For attaining the object described above, an information processing apparatus according to an embodiment of the present technology includes an acquisition unit and a generation unit. The acquisition unit acquires information related to a notification to a user. The generation unit generates control information for changing an outer shape of a wearable device on a basis of the information.Type: GrantFiled: February 3, 2017Date of Patent: December 29, 2020Assignee: SONY CORPORATIONInventors: Kosuke Yoshitomi, Jun Kimura, Tsubasa Tsukahara, Ikuo Yamano, Kei Takahashi, Ayumi Kato
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Patent number: 10852772Abstract: An information processing apparatus according to an embodiment of the present technology includes a determination unit and an output unit. The determination unit determines, on a basis of information related to a usage state of a wearable device, a holding state of the wearable device with respect to an attachment target. The output unit generates and outputs control information for achieving the determined holding state.Type: GrantFiled: February 14, 2017Date of Patent: December 1, 2020Assignee: SONY CORPORATIONInventors: Yohei Fukuma, Toru Amano
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Patent number: 9953668Abstract: A data storage device may employ a suspension that positions a transducing head proximal a data storage medium. The suspension can consist of an active fiber composite that spans a portion of a loadbeam. The active fiber composite can be configured with at least one active fiber contacting a supporting layer.Type: GrantFiled: September 30, 2016Date of Patent: April 24, 2018Assignee: Seagate Technology LLCInventors: Vijay Kumar, Razman Zambri
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Patent number: 9355658Abstract: According to one embodiment, a magnetic head is arranged opposite a magnetic recording medium including a recording layer. The magnetic head includes a magnetic pole, a light emitting unit, and a distance adjusting unit. The magnetic pole includes a soft magnetic material. The light emitting unit is arranged with respect to the magnetic pole in a travel direction of the magnetic head, and emits light with respect to the recording layer. The distance adjusting unit adjusts a distance between the magnetic pole and the light emitting unit.Type: GrantFiled: February 18, 2015Date of Patent: May 31, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Toshiyuki Ikai, Tomoko Taguchi, Kenichiro Aoki
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Patent number: 9275660Abstract: A magnetic head of an embodiment has first and second magnetic shields, a stack, a side shield, and an antiferromagnetic layer. The stack has a pin layer, a nonmagnetic layer, and first and second free layers. The second free layer is antiferromagnetically exchange coupled to the first free layer and is exchange coupled to the antiferromagnetic layer. The side shield is exchange coupled to the antiferromagnetic layer.Type: GrantFiled: August 4, 2015Date of Patent: March 1, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Yousuke Isowaki, Kenichiro Yamada, Masayuki Takagishi
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Patent number: 8797690Abstract: Approaches to a mass balanced flexure gimbal assembly for controlling the sway mode of the loadbeam portion of the suspension of a head gimbal assembly (HGA) of a hard-disk drive (HDD). The sway mode of concern is that which is excited when a head slider is actuated by a plurality of piezo actuation devices of a secondary actuation system. A suspension includes a mass attached to the suspension flexure and configured for balancing a moment force about the gimbal, about which a slider rotates when microactuated. The mass is located on the side of the slider opposing the side on which the piezo actuation devices are mounted, to counteract the mass of the piezo devices.Type: GrantFiled: December 19, 2012Date of Patent: August 5, 2014Assignee: HGST Netherlands B.V.Inventors: Kathryn Tao, Stephen Williams
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Patent number: 8675313Abstract: A suspension board with circuit includes a mounting portion for mounting thereon a slider, a supporting portion for supporting one end portion of the mounting portion, a facing portion facing the mounting portion to be spaced apart therefrom, and a driving portion provided between the mounting portion and the facing portion. The driving portion includes a heater; and an expansive portion which is thermally expanded by heat generated from the heater.Type: GrantFiled: December 21, 2012Date of Patent: March 18, 2014Assignee: Nitto Denko CorporationInventors: Naotaka Higuchi, Hitoki Kanagawa, Tetsuya Ohsawa, Daisuke Yamauchi
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Publication number: 20130286512Abstract: A terminal includes a terminal wiring part extending from a flexure and having an insulating layer and a wiring layer formed on the insulating layer, a terminal main part formed at a front end of the terminal wiring part and connected to a piezoelectric element arranged to face the terminal main part, and a terminal bender that is made of a supportive metal layer, is arranged along a part of the terminal wiring part in an extending direction thereof, and is plastically deformed to form a bend in the part of the terminal wiring part so as to bring the terminal main part closer to the piezoelectric element.Type: ApplicationFiled: April 3, 2013Publication date: October 31, 2013Applicant: NHK Spring Co., Ltd.Inventor: Akira OMACHI
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Publication number: 20130094106Abstract: Implementations described and claimed herein address the foregoing problems by providing a suspension assembly used in a storage device to support a transducer head, wherein the suspension assembly comprises a base plate for attaching to an actuator arm and a moving portion movably attached to the base plate. The base plate is fixed and/or clamped to the actuator arm and the moving portion adapted to rotate about a center of rotation. The moving portion is adapted to have a center of mass of its moving mass substantially close to its center of rotation. In one implementation, a counter-weight is attached to the moving portion to move the center of mass of its moving mass substantially close to its center of rotation to minimize inertial loads to the system during suspension actuation.Type: ApplicationFiled: October 14, 2011Publication date: April 18, 2013Applicant: SEAGATE TECHNOLOGY LLC.Inventor: Paul Y. Chua
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Publication number: 20120250177Abstract: A method and apparatus for transferring data. First data is transferred in a first direction on a surface of a selected magnetic disk in a plurality of magnetic disks using a first actuator assembly. Second data is transferred in a second direction on the surface of the selected magnetic disk in the plurality of magnetic disks using a second actuator assembly, while the first data is being transferred in the first direction by the first actuator assembly.Type: ApplicationFiled: April 1, 2011Publication date: October 4, 2012Applicant: LSI CORPORATIONInventors: Vinay Ashok Somanache, Haribhai Somabhai Patel
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Publication number: 20120212860Abstract: A magneto-resistive effect (MR) element includes: first and second magnetic layers in which a relative angle formed by magnetization directions changes according to an external magnetic field; and a spacer layer positioned between the first magnetic layer and the second magnetic layer. The spacer layer includes a main spacer layer composed of gallium oxide as a primary component and containing at least one metal element selected from a group of magnesium, zinc, indium and aluminum.Type: ApplicationFiled: February 17, 2011Publication date: August 23, 2012Applicant: TDK CorporationInventors: Hayato KOIKE, Tsutomu CHOU, Yoshihiro TSUCHIYA, Hironobu MATSUZAWA
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Publication number: 20120014017Abstract: A suspension substrate according the present invention includes: an insulating layer; a metallic support layer provided on the actuator element's side of the insulating layer. A wiring layer is provided on the other side of the insulating layer. This wiring layer includes a plurality of wirings and a wiring connection section that can be electrically connected with the actuator element via a conductive adhesive. A conductive connection section extending through the insulating layer and configured to connecting the metallic support layer with the wiring connection section of the wiring layer is provided in the connection structure region.Type: ApplicationFiled: July 8, 2011Publication date: January 19, 2012Applicant: Dai Nippon Printing Co., Ltd.Inventors: Masao Ohnuki, Yoichi Miura
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Publication number: 20110317308Abstract: According to one embodiment, a magnetic recording apparatus includes a magnetic recording medium for perpendicular magnetic recording system, a magnetic head including a read head to read data from the magnetic recording medium, and an actuator to actuate the magnetic head on the magnetic recording medium. The magnetic recording medium includes a first magnetic pattern recorded in a servo area by applying a magnetic field horizontally to a disk surface, and the first magnetic pattern corresponding to positioning data used for positioning the magnetic head. The magnetic recording medium further includes a second magnetic pattern recorded in the servo area by applying a magnetic field perpendicularly to the disk surface, and the second magnetic pattern corresponding to position correction data used for correcting the positioning data. The position correction data is derived from modulated original position correction data. The original position correction data is created for correcting the positioning data.Type: ApplicationFiled: June 23, 2011Publication date: December 29, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Hiroyuki SUZUKI, Hiroshi KUBOTA, Masahide YATSU
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Publication number: 20110242707Abstract: A hard disk drive includes a magnetic head to write data to a disk by magnetizing the disk using a leakage magnetic flux that leaks in a disk direction through a write gap provided between a write pole to apply a magnetic field to the disk and a shield provided separately from the write pole, and an actuator arm allowing the magnetic head to pivot over the disk. In the hard disk drive, the write gap is asymmetrically formed to a left and a right with respect to a center axis line of the write pole according to a movement direction of the magnetic head when the magnetic head pivots over the disk.Type: ApplicationFiled: April 4, 2011Publication date: October 6, 2011Applicant: Samsung Electronics Co., LtdInventors: Yong-Bae YOON, Hae Jung Lee
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Patent number: 7835115Abstract: A recording head for use in magnetic storage devices is disclosed. The recording head includes flexure assemblies that can be selectively and electrically charged to provide a motional force to selectively move the flexure assemblies and to cause corresponding movement of a transducer with to a surface of a magnetic medium.Type: GrantFiled: May 26, 2009Date of Patent: November 16, 2010Inventor: Dallas W. Meyer
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Patent number: 7614136Abstract: A framing assembly with lower stiffness design and a method of manufacturing that framing assembly are disclosed. In one embodiment, a framing assembly pattern is cut from a piece of a thin planar material, such as metal. The pattern is then bent to form a framing assembly with a base piece, two arms, and supports for a connection plate. In an alternate embodiment, the base piece includes a rear support and a support base. In a further embodiment, excess material surrounding the pattern is cut away so as to allow the most efficient use of the material.Type: GrantFiled: June 27, 2007Date of Patent: November 10, 2009Assignee: SAE Magnetics (H.K.) Ltd.Inventors: Ming-Gao Yao, Masashi Shiraishi, Yi-Ru Xie
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Patent number: 7609487Abstract: A micro-actuator for a head gimbal assembly includes a support structure and a PZT element. The support structure includes a bottom support integrated with a suspension flexure of the head gimbal assembly, a top support adapted to support a slider of the head gimbal assembly, and a leading beam that couples the bottom support and the top support. The leading beam includes a weak point that allows the top support to rotate about a rotational axis in use. The PZT element is mounted between the top and bottom supports. The PZT element is excitable to cause selective rotational movement of the top support about the rotational axis in use.Type: GrantFiled: March 22, 2006Date of Patent: October 27, 2009Assignee: SAE Magnetics (H.K.) Ltd.Inventors: MingGao Yao, LiYan Zhu, Masashi Shiraishi
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Patent number: 7595964Abstract: Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms.Type: GrantFiled: November 14, 2006Date of Patent: September 29, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Ho Oh, Seong-Woo Kang, Yun-Sik Han, Young-Hoon Kim, Myeong-Eop Kim, Tae-Yeon Hwang, Jae-Won Kim
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Patent number: 7466513Abstract: An airflow shroud for either a moving-slider-type or a moving-head-type microactuator of a disk drive reduces off-track motion of a read/write element for either a moving-slider-type microactuator or a moving-head-type microactuator. One configuration of the airflow shroud includes a frame portion and an attachment portion. The frame portion has an opening suitable for exposing an air bearing surface of a slider for a disk drive and surrounds the slider and a moving-slider-type microactuator coupled to the slider. The attachment portion is adapted for attachment to a suspension of a disk drive. Another configuration includes a plate portion and a recessed portion. The plate portion is attachable to a slider having a moving-head-type microactuator. The recessed portion corresponds to the moving-head-type microactuator of the slider.Type: GrantFiled: August 19, 2003Date of Patent: December 16, 2008Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Toshiki Hirano, Henry Hung Yang
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Publication number: 20080180856Abstract: An apparatus and method for a microactuator having a bonding pad having a solder ball retainer to decrease instances of solder ball movement. The method provides a substrate for the microactuator. A conductive layer above the substrate is provided. A bonding pad having a solder ball retainer is provided and disposed above the conductive layer. The bonding pad having a solder ball retainer provides reduced instances of movement of a solder ball disposed therewithin prior to and during a reflow process performed on the solder ball.Type: ApplicationFiled: January 31, 2007Publication date: July 31, 2008Inventors: Toshiki Hirano, Haruhide Takahashi, Tatsumi Tsuchiya
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Publication number: 20080180846Abstract: A microactuator substrate. The substrate includes a stroke amplifier for generating an amount of amplified motion converted from a force received thereon. The substrate also includes a rotating device coupled to the stroke amplifier and comprising supporting rotational springs. The rotating device is separate and independent from the stroke amplifier and has a center of rotation substantially proximal to a center of mass of an object disposable thereon. The rotating device causes a rotation in a portion of the substrate upon receiving said amplified motion. The substrate further includes a piezoelectric (PZT) actuator that is coupled to the stroke amplifier and is for generating the force. The stroke amplifier and the rotating device are integrated within the substrate.Type: ApplicationFiled: January 31, 2007Publication date: July 31, 2008Inventor: Toshiki Hirano
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Publication number: 20080174920Abstract: The invention provides a giant magneto-resistive effect device (CPP-GMR device) having a CPP (current perpendicular to plane) structure comprising a spacer layer, and a fixed magnetized layer and a free layer stacked one upon another with said spacer layer interleaved between them, with a sense current applied in a stacking direction, wherein the spacer layer comprises a first and a second nonmagnetic metal layer, each formed of a nonmagnetic metal material, and a semiconductor oxide layer interleaved between the first and the second nonmagnetic metal layer, wherein the semiconductor oxide layer that forms a part of the spacer layer is made of indium oxide (In2O3), or the semiconductor oxide layer contains indium oxide (In2O3) as its main component, and an oxide containing a tetravalent cation of SnO2 is contained in the indium oxide that is the main component.Type: ApplicationFiled: January 24, 2007Publication date: July 24, 2008Applicant: TDK CORPORATIONInventors: Shinji Hara, Kei Hirata, Koji Shimazawa, Yoshihiro Tsuchiya, Tomohito Mizuno
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Patent number: 7359154Abstract: A system and method for connecting an actuator to a suspension element is disclosed. The actuator is electrically coupled using a silver paste. The silver paste is further covered by a coating application to provide structural support. A step, attached to either the actuator base or the suspension tongue, provides further structural support and maintains a gap between the actuator and the suspension element.Type: GrantFiled: April 3, 2007Date of Patent: April 15, 2008Assignee: SAE Magnetics (H.K.) LtdInventors: Ming Gao Yao, Masashi Shiraishi
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Patent number: 7312956Abstract: A head gimbal assembly includes a slider, a rotatable micro-actuator and a suspension to load the slider and the rotatable micro-actuator. The rotatable micro-actuator horizontally rotates the slider with a central portion of the slider as an axis, which includes a bottom plate to be connected with the suspension, two arm plates symmetrically disposed on the bottom plate with a central portion of the bottom plate as symmetry point and at least one piezoelectric pieces to be connected with the arm plates. Selectively, the amount of the arm plates can be four and four piezoelectric pieces to be connected with the four arm plates, respectively.Type: GrantFiled: September 8, 2004Date of Patent: December 25, 2007Assignee: SAE Magnetics (H.K.) LtdInventors: MingGao Yao, Masashi Shiraishi
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Patent number: 7277259Abstract: A magnetic head actuator includes a head-holding substrate having a pair of movable arms for clamping a magnetic head, and piezoelectric elements fixed along the pair of movable arms to move the pair of movable arms in response to an applied voltage. The head-holding substrate comprises a fired glass-ceramic compact containing at least one of SiO2, B2O3, and Al2O3. The piezoelectric elements are formed on the head-holding substrate with a piezoelectric material by printing and low-temperature firing.Type: GrantFiled: February 6, 2004Date of Patent: October 2, 2007Assignee: Alps Electric Co., Ltd.Inventors: Yutaka Yamamoto, Jun-ichi Murakami, Hiroya Sawairi
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Patent number: 7240417Abstract: A framing assembly with lower stiffness design and a method of manufacturing that framing assembly are disclosed. In one embodiment, a framing assembly pattern is cut from a piece of a thin planar material, such as metal. The pattern is then bent to form a framing assembly with a base piece, two arms, and supports for a connection plate. In an alternate embodiment, the base piece includes a rear support and a support base. In a further embodiment, excess material surrounding the pattern is cut away so as to allow the most efficient use of the material.Type: GrantFiled: August 4, 2004Date of Patent: July 10, 2007Assignee: SAE Magnetics (H.K.) Ltd.Inventors: Ming-Gao Yao, Masashi Shiraishi, Yi-Ru Xie
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Patent number: 7215514Abstract: A method of operating a disk drive including providing the disk drive. The disk drive includes a disk with data tracks and an actuator with a slider including a perpendicular magnetic write head. The write head includes leading and trailing sides defining a taper angle. The write head and the actuator define a maximum skew angle with respect to the data tracks. The maximum skew angle being greater than the taper angle. The method further includes rotating the slider during operation of the disk drive to reduce a difference between the skew and taper angles for aligning the write head with the data tracks.Type: GrantFiled: October 22, 2004Date of Patent: May 8, 2007Assignee: Western Digital Technologies, Inc.Inventors: Lin Yang, Lin Mei, William C. Tipton, II, Robert J. McNab
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Patent number: 7161765Abstract: An object of the invention is to provide a write/read head supporting mechanism for a magnetic disk system or optical disk system having a microactuator for effecting a micro-displacement of a slider, wherein any electrostatic breakdown of an electromagnetic transducer element or an optical module is prevented without detriment to the displacement capability of the microactuator. The write/read head supporting mechanism of the invention comprises a slider 2 provided with an electromagnetic transducer element or an optical module, and a suspension 3. The slider 2 is supported on the suspension 3 by way of a microactuator 4 for displacing the slider 2. A ground region that the suspension 3 has is electrically connected to the slider 2 by way of an electrical connecting member 8 movable and/or deformable in the displacement direction of the slider 2 by the microactuator 4.Type: GrantFiled: July 25, 2005Date of Patent: January 9, 2007Assignee: TDK CorporationInventors: Shinji Ichikawa, Yoshikazu Soeno, Takamitsu Tsuna
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Patent number: 7110224Abstract: There is provided a magnetic disk drive in which a flying-height fluctuation produced by the operation of a fine actuator is decreased, the reliability is high, and recording density is high. For this purpose, the magnetic disk drive is configured as described below. The magnetic disk drive has a suspension including a base plate connected to a carriage, a load beam fitted with a slider, and a fine actuator which is provided on the base plate and finely moves the load beam. The configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the local maximum of a flying-height fluctuation frequency of the suspension by the fine actuator. Also, the configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the natural frequency of first torsion mode of the suspension by the fine actuator.Type: GrantFiled: July 20, 2005Date of Patent: September 19, 2006Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Shigeo Nakamura, Haruhide Takahashi, Kousaku Wakatsuki
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Patent number: 7050266Abstract: An object of the invention is to provide a write/read head supporting mechanism for a magnetic disk system or optical disk system having a microactuator for effecting a micro-displacement of a slider, wherein any electrostatic breakdown of an electromagnetic transducer element or an optical module is prevented without detriment to the displacement capability of the microactuator. The write/read head supporting mechanism of the invention comprises a slider 2 provided with an electromagnetic transducer element or an optical module, and a suspension 3. The slider 2 is supported on the suspension 3 by way of a microactuator 4 for displacing the slider 2. A ground region that the suspension 3 has is electrically connected to the slider 2 by way of an electrical connecting member 8 movable and/or deformable in the displacement direction of the slider 2 by the microactuator 4.Type: GrantFiled: August 1, 2003Date of Patent: May 23, 2006Assignee: TDK CorporationInventors: Shinji Ichikawa, Yoshikaza Soeno, Takamitsu Tsuna
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Patent number: 7027248Abstract: In a thermal assisted type magnetic disk apparatus having a head holding a heat element and a write element, in which coercivity of a disk is locally reduced by temperature-increasing the disk and writing is performed by the write element, along with a seek operation to move the head by a rotary actuator in a radial direction, a yaw angle is changed and a heat area and the write element are track-shifted. A mechanism to offset one of the heat area and the write element in a width direction of a slider, to array the heat element and the write element in a track running direction in correspondence with the yaw angle of the head.Type: GrantFiled: August 5, 2003Date of Patent: April 11, 2006Assignee: Hitachi, Ltd.Inventors: Takehiko Hamaguchi, Atsushi Nakamura, Yasutaka Nishida, Masafumi Mochizuki, Hideki Sawaguchi
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Patent number: 6977790Abstract: An actuator arm assembly has an actuator arm and an actuator for moving the actuator arm whereby the arm assembly experiences vibrations. The actuator has a body with a recess formed therein, and a strain sensor is fitted essentially inside the recess such that the sensor generates signals correlated to the vibrations. This arrangement produces a high gain boost from the strain based sensor, making an amplifier circuit unnecessary. The sensor signals are used to damp the vibrations.Type: GrantFiled: May 3, 2002Date of Patent: December 20, 2005Assignee: Maxtor CorporationInventors: Yih-Jen D. Chen, David M. Tung, Lin Guo, Wei Guo, Bill Wang
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Patent number: 6950287Abstract: There is provided a magnetic disk drive in which a flying-height fluctuation produced by the operation of a fine actuator is decreased, the reliability is high, and recording density is high. For this purpose, the magnetic disk drive is configured as described below. The magnetic disk drive has a suspension including a base plate connected to a carriage, a load beam fitted with a slider, and a fine actuator which is provided on the base plate and finely moves the load beam. The configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the local maximum of a flying-height fluctuation frequency of the suspension by the fine actuator. Also, the configuration is such that the shortest track travel time using the fine actuator is larger than the inverse number of the natural frequency of first torsion mode of the suspension by the fine actuator.Type: GrantFiled: February 26, 2003Date of Patent: September 27, 2005Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Shigeo Nakamura, Haruhide Takahashi, Kousaku Wakatsuki
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Patent number: 6937441Abstract: An extending portion extending from the proximal portion of the load beam of a disc drive suspension has a first hole in which a first positioning pin can be inserted and a second hole in which a second positioning pin can be inserted. The first hole has an elongated shape that allows the extending portion to move relatively to the first positioning pin in a width direction. The second hole is a circular large hole that allows the extending portion to move relatively to the second positioning pin in the width direction and an axial direction. A third hole and a fourth hole are formed in a flexure. The third hole has an elongated shape that allows the flexure to move relatively to the first positioning pin in the axial direction. The fourth hole has an elongated shape that allows the flexure to move relatively to the second positioning pin.Type: GrantFiled: August 12, 2004Date of Patent: August 30, 2005Assignee: NHK Spring Co., Ltd.Inventors: Hiroshi Okamoto, Hideki Kashima, Chihiro Kono, Takashi Horiuchi
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Patent number: 6914751Abstract: An extending portion of a load beam is formed having a first hole in which a first positioning pin can be inserted and a second hole in which a second positioning pin can be inserted. The first hole has an elongated shape that allows the extending portion of the load beam to move relatively to the first positioning pin in a width direction. The second hole is a circular large hole that allows the extending portion to move relatively to the second positioning pin in the width direction and an axial direction. A third hole and a fourth hole are formed in a flexure. The third hole has an elongated shape that allows the flexure to move relatively to the first positioning pin in the axial direction. The fourth hole has an elongated shape that allows the flexure to move relatively to the second positioning pin.Type: GrantFiled: August 12, 2004Date of Patent: July 5, 2005Assignee: NHK Spring Co., Ltd.Inventors: Hiroshi Okamoto, Hideki Kashima, Chihiro Kono, Takashi Horiuchi
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Patent number: 6879468Abstract: A magnetic head actuator for a magnetic recording disk drive, comprising a micro-actuator which is provided at a tip end portion of a load beam attached to an arm of a voice coil motor and which is for oscillating a magnetic head slider, wherein one end of the micro-actuator is fixed to a stator portion fixed to the load beam, a gimbal portion and a rotor portion oscillatably supported by metallic micro-beams formed by bending are provided on the side of the other end of the micro-actuator, the magnetic head slider is attached to the gimbal portion, either one of a permanent magnet and a coil is disposed at the stator portion, the other of the permanent magnet and the coil is disposed at the rotor portion, and the rotor portion and the magnetic head slider attached to the gimbal portion as one body with the rotor portion are oscillated by passing an electric current to the coil in a magnetic field formed by the permanent magnet.Type: GrantFiled: January 16, 2003Date of Patent: April 12, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hajime Nakamura, Takehisa Minowa
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Patent number: 6813119Abstract: An extending portion of a hinge member is formed having a first hole in which a first positioning pin can be inserted and a second hole in which a second positioning pin can be inserted. The first hole has an elongated shape that allows the extending portion of the hinge member to move relatively to the first positioning pin in a width direction. The second hole is a circular large hole that allows the extending portion to move relatively to the second positioning pin in the width direction and an axial direction. A third hole and a fourth hole are formed in a flexure. The third hole has an elongated shape that allows the flexure to move relatively to the first positioning pin in the axial direction. The fourth hole has an elongated shape that allows the flexure to move relatively to the second positioning pin.Type: GrantFiled: June 25, 2002Date of Patent: November 2, 2004Assignee: NHK Spring Co., Ltd.Inventors: Hiroshi Okamoto, Hideki Kashima, Chihiro Kono, Takashi Horiuchi
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Patent number: 6757124Abstract: An actuator assembly of a disc drive having an actuator arm rotatably mounted adjacent a data disc. The actuator arm includes a piezoelectric assembly configured to displace a data transducer relative to the data disc. The piezoelectric assembly may include a top-left piezoelectric element, a top-right piezoelectric element, a bottom-left piezoelectric element, and a bottom-right piezoelectric element. The actuator arm also includes an hourglass-shaped arm pivot configured to bias the data transducer to a rest position.Type: GrantFiled: December 1, 2000Date of Patent: June 29, 2004Assignee: Seagate Technology LLCInventor: Bradley David Kelemen
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Patent number: 6738230Abstract: A disk device includes a head part, an actuator part for moving the head part to an objective position, and a control part for controlling the actuator part, wherein the control part makes the actuator part shift to a reverse direction of the movement direction of the head part before a settling action of the head part starts being implemented.Type: GrantFiled: March 5, 2002Date of Patent: May 18, 2004Assignee: Fujitsu LimitedInventor: Takeyori Hara
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Patent number: 6639761Abstract: A micro-actuator including a skeleton having flexible beams, a rotor portion, a stator portion, and a damping material. The flexible beams connect the rotor portion to the stator portion and the damping material is applied to the skeleton. The damping material provides a protective layer to the flexible beams of a micro-actuator. The damping material increases the damping characteristics of the micro actuator and limits the penetration of humidity into the skeleton of the micro actuator.Type: GrantFiled: June 7, 2000Date of Patent: October 28, 2003Assignee: Seagate Technology LLCInventors: Zine Eddine Boutaghou, Peter R. Segar
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Publication number: 20030193855Abstract: When a head passes over a track with a projected item in a seek operation, the CPU delays a seek start time to conduct the seek by changing a period of time from a seek start position to a position of the track with a projected item. Or, the CPU conducts seek control by changing a speed table. Or, the CPU changes a sequence of items of a tag queue to obtain a seek locus not passing the projected item. By the control operation, a seek error due to thermal asperity is prevented and the head is not damaged. This also prevents appearance of a new projected item produced by contact between the magneto-resistive head and the projected item on the recording medium.Type: ApplicationFiled: February 24, 2003Publication date: October 16, 2003Inventors: Masaki Yoshioka, Kenichi Masuda, Yuji Hata, Takeshi Nakazawa, Takayuki Umemoto
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Patent number: 6621661Abstract: A write/read head supporting mechanism including a slider having an electromagnetic transducer element or an optical module, a suspension for supporting the slider and including a ground region, and a microactuator disposed between the slider and the suspension for displacing said slider. Further, at least a part of the microactuator includes an electrically conductive region, and the ground region of the suspension is electrically connected to the slider by the electrically conductive region of the microactuator, such that the slider is grounded so as to prevent an electrostatic breakdown of the electromagnetic transducer element or the optical module.Type: GrantFiled: July 13, 2000Date of Patent: September 16, 2003Assignee: TDK CorporationInventors: Shinji Ichikawa, Yoshikazu Soeno, Takamitsu Tsuna
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Patent number: 6618220Abstract: A head actuator includes a head slider for carrying a head for recording information to or reproducing information from a recording medium; and a head supporting member for supporting the head slider. The head supporting member includes a substrate and a driving element provided on at least one surface of the substrate for generating an expanding and contracting force in a longitudinal direction in accordance with an external signal, wherein the external signal is applied to the driving element so as to expand or contract the head supporting member in the longitudinal direction and to position the head in a radial direction of the recording medium. The head supporting member includes a first area on which the head slider is provided, a second area on which the driving element is provided, and a third area for connecting the first area and the second area. The driving element has a geometrically central face.Type: GrantFiled: June 28, 2001Date of Patent: September 9, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tatsuhiko Inagaki, Hideki Kuwajima
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Publication number: 20030035247Abstract: A disk device includes a head part, an actuator part for moving the head part to an objective position, and a control part for controlling the actuator part, wherein the control part makes the actuator part shift to a reverse direction of the movement direction of the head part before a settling action of the head part starts being implemented.Type: ApplicationFiled: March 5, 2002Publication date: February 20, 2003Applicant: FUJITSU LIMITEDInventor: Takeyori Hara
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Patent number: 6512313Abstract: An electromagnetic x-y stage driver for a nano data storage system and a method for fabricating the coils of the same are provided. In the electromagnetic x-y stage driver, a cantilever tip array fixedly provided a medium for recording data to write data to or read data from each cell of the medium. Four coils are formed to be integrated with the medium in front of, behind, to the left of and to the right of the medium to move the medium. Four supporting beam are installed to an x-y stage body onto which a medium structure composed of the medium and the four coils is loaded such that the four supporting beam are connected to the four corners of the medium structure to support the medium structure. Four driving beams connect the upper portions of the supporting beam to the four corners of the medium structure to allow the medium structure to move in an x or y direction. Stiffeners are disposed at the four sides between the supporting beam to prevent the medium structure from rotating.Type: GrantFiled: June 11, 2001Date of Patent: January 28, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-joon Choi, Kyu-yong Kim, Hong-sik Park, Chang-su Park, Jong Up Jeon
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Patent number: 6501623Abstract: A microactuator is attached to a first face of a coupling formed on a suspension, so that an R/W transducer projects from an opposite face. A hole in the coupling permits passage of an adhesive mass interposed between a rotor of the microactuator and the R/W transducer. A strip of adhesive material extends between a die accommodating the microactuator and the coupling, and externally surrounds the microactuator. The coupling acts as a protective shield for the microactuator, both mechanically and electrically. The coupling covers the microactuator at the front, and prevents foreign particles from blocking the microactuator. In addition, the coupling electrically insulates the R/W transducer, which is sensitive to magnetic fields, from regions of the microactuator biased to a high voltage. With the coupling, the strip forms a sealing structure, which in practice surrounds the microactuator on all sides.Type: GrantFiled: July 20, 1999Date of Patent: December 31, 2002Assignee: STMicroelectronics S.r.l.Inventors: Simone Sassolini, Sarah Zerbini, Benedetto Vigna, Ubaldo Mastromatteo
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Patent number: 6404599Abstract: A microactuator comprises a stator element and a rotor element which are capacitively coupled. The rotor element comprises a suspended mass and a plurality of movable drive arms extending radially from the suspended mass and biased at a reference potential. The stator element comprises a plurality of first and second fixed drive arms associated with respective movable drive arms and biased at a first drive potential. A mechanical damping structure is formed by at least one movable damping arm extending radially from the suspended mass and by at least one first and one second fixed damping arm associated with the movable damping arm and biased at said reference potential, to dampen settling oscillations of the rotor element.Type: GrantFiled: September 30, 1999Date of Patent: June 11, 2002Assignee: STMicroelectronics, S.r.l.Inventor: Benedetto Vigna
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Patent number: 6356418Abstract: An integral computer hard drive microactuator support comprising a unitary member of solid material. The support includes a frame portion surrounding and defining an opening portion, and a platform portion disposed within the opening portion. Four fixed-fixed beam portions connect the platform portion to the frame portion, the fixed-fixed beam portions being generally rectangular in cross section and substantially straight along their length.Type: GrantFiled: June 30, 1999Date of Patent: March 12, 2002Assignee: Texas Instruments IncorporatedInventors: Mark W. Heaton, Michael K. Masten, Mark A. Avery, Philip A. Congdon, Tsen-Hwang Lin
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Patent number: 6282066Abstract: A microactuator suspension having a stator portion for connection to a gimbal, a rotor portion for connection to a slider and a plurality of microbeams connected therebetween. The microbeams have an aspect ratio of 30:1, 60:1, 90:1, 120:1 or more. The microbeams may be manufactured from a material that is different than the material of the stator, such as Titanium, Tungsten, Molybdenum, Nickel or Silicon Nitride.Type: GrantFiled: September 4, 1998Date of Patent: August 28, 2001Assignee: Seagate Technology LLCInventor: Wayne A. Bonin