| Patent Number |
Title Of Patent |
Date Issued |
| 7626811 |
Low profile disk drive unit |
December 1, 2009 |
| A low profile disk drive unit includes a disk; a HSA cooperating with the disk; a base plate comprising a bottom portion for supporting the disk and the head stack assembly thereon and a base plate sidewall extending from circumference of the bottom portion; and a top cover comprising a |
| 7626785 |
Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus |
December 1, 2009 |
| A main magnetic pole layer is constructed so as to have a stacking structure in which a lower main magnetic pole layer having relative low saturated magnetic flux density and an exposed surface area is positioned on a leading side, and an upper main magnetic pole layer having relative |
| 7623321 |
Micro-actuator including electrical connection shifting circuit, head gimbal assembly and disk d |
November 24, 2009 |
| A micro-actuator for a HGA includes a frame having a pair of side arms and a connection plate that interconnects the two side arms at one end thereof; a PZT element attached to at least one of the side arms; and an electrical connection shifting device to connect with the PZT element and |
| 7621185 |
Acceleration sensor and electronic device comprising the same |
November 24, 2009 |
| There is provided an acceleration sensor that is capable of detecting acceleration with high precision and capable of reducing the size and cost due to its simple structure. The acceleration sensor comprises: a pair of cantilevers arranged on a same straight line or almost in paralle |
| 7617737 |
Adjustment of pitch and roll static torques in a disk drive head gimbal assembly |
November 17, 2009 |
| In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a flexure to yield a |
| 7617589 |
Method of manufacturing slider of thin-film magnetic head |
November 17, 2009 |
| A method of manufacturing a slider includes forming a slider material containing a portion to be the slider body and a head element. The slider material is processed to form an air bearing surface by lapping a surface to be a medium facing surface of the slider material to form a lapped |
| 7614136 |
Method of producing a framing assembly |
November 10, 2009 |
| 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 bas |
| 7609487 |
Thin-film PZT micro-actuator integral with suspension of head gimbal assembly, and disk drive un |
October 27, 2009 |
| 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 l |
| 7607215 |
Method of manufacturing magnetic head slider |
October 27, 2009 |
| To provide a method of manufacturing magnetic head slider which is capable of improving the product quality, simplifying the manufacturing process, and reducing the manufacturing time. This method of manufacturing a magnetic head slider, formed by cutting out from a block member, include |
| 7600310 |
Method of head stack assembly flexible circuit assembly attached to an actuator arm |
October 13, 2009 |
| A method for mounting a head stack assembly (HSA) circuit assembly is disclosed. A flexible circuit substrate may be coupled to a stiffener. The stiffener may be a metal, such as aluminum, or some other stiff and durable material. The flexible circuit substrate may be made of an orga |
| 7596859 |
Method for maintaining alignment of a hard disk micro-actuator and magnetic head with respect to |
October 6, 2009 |
| A system is disclosed for maintaining proper alignment of a hard disk micro-actuator and magnetic head with respect to a drive arm's suspension during the curing process of the bonding agent used in their coupling. Embodiments may include a system to couple an actuator element to a s |
| 7596855 |
Method for manufacturing a magnetic head |
October 6, 2009 |
| A thin film magnetic head capable of shortening a manufacturing time and a method of manufacturing the same are provided. After forming a write gap layer by using a non-magnetic conductive material such as copper, a top pole is formed on the write gap layer by growing a plating film with |
| 7593191 |
HGA having separate dimple element, disk drive unit with the same, and manufacturing method ther |
September 22, 2009 |
| A HGA of the invention includes a slider, a load beam having a locating hole formed therein; a flexure to support the slider and connect with the load beam; a separate dimple element having a dimple to extend through the locating hole and support the flexure at a position corresponding t |
| 7583472 |
Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus |
September 1, 2009 |
| The present invention provides a thin film magnetic head capable of suppressing unintentional wiring to a neighboring track and preventing information recorded on a recording medium from being erased. A main magnetic pole layer is constructed so that height of a widened end surface i |
| 7582868 |
Method of nano thin film thickness measurement by auger electron spectroscopy |
September 1, 2009 |
| A system and method for measuring the thickness of an ultra-thin multi-layer film on a substrate is disclosed. A physical model of an ultra-thin multilayer structure and Auger electron emission from the nano-multilayer structure is built. A mathematical model for the Auger Electron S |
| 7580226 |
Method and mechanism of the PZT micro-actuator application for the magnetic head gimbal assembly |
August 25, 2009 |
| A system and method using a framing assembly to provide support for a micro-actuator and allow the micro-actuator to be connected to a suspension assembly is disclosed. In one embodiment, the framing assembly consists of a base with two arms attached. In a further embodiment a crossp |
| 7576950 |
Perpendicular magnetic recording head utilizing tensile stress to optimize magnetic pole layer d |
August 18, 2009 |
| A thin film magnetic head is constructed so that in the case where a magnetic pole layer has a tensile stress, an insulating layer under the magnetic pole layer has a tensile stress and a gap layer on the magnetic pole layer similarly has a tensile stress. The tensile stress in the m |
| 7569332 |
Processing method of thin-film and manufacturing method of thin-film magnetic head |
August 4, 2009 |
| A processing method of a thin-film includes a step of forming a predetermined pattern film or predetermined elements on a substrate or on a film formed in an upstream process, a step of forming a transparent film over the formed predetermined pattern film or predetermined elements, a |
| 7564652 |
Head gimbal assembly including a one-piece structural suspension and an accessory plate, and met |
July 21, 2009 |
| A head gimbal assembly, including a slider, a suspension having a slider holding plate, and an accessory plate mounted on the suspension having a dimple to partially hold the slider holder plate. |
| 7562435 |
Method to improve crown sigma control of the slider in a hard disk drive |
July 21, 2009 |
| The sensitivity of the ABS shape of a suspension mounted slider to temperature variations can be greatly reduced if the backside of the slider is lapped to a smooth convex contour that is similar to the ABS shape, rather than to a planar shape, prior to mounting the slider on the sus |
| 7560038 |
Thin film forming method and system |
July 14, 2009 |
| A thin-film forming method, which includes the steps of: (1) holding at least one object in a chamber; (2) depositing a film-forming material on the object; (3) etching the forming material while depositing is conducted. In the present invention, the depositing and etching are contro |
| 7555947 |
Air pressure sensor |
July 7, 2009 |
| An air pressure sensor capable of measuring air pressure highly accurately with a simple configuration is provided. The sensor includes: a sealed case with a sealed space formed therein; a first thin plate member which constitutes at least a part of the wall of the sealed case and deform |
| 7554773 |
Micro-actuator, head gimbal assembly and disk drive unit with the same |
June 30, 2009 |
| A HGA of the invention includes a slider; a micro-actuator to adjust the position of the slider; and a suspension to load the slider and the micro-actuator. The micro-actuator includes two side arms; a load plate for supporting the slider, which is connected with at least one of the |
| 7554772 |
Head gimbal assembly having an independent spacer therein and disk drive unit with the same |
June 30, 2009 |
| A HGA of the invention includes a micro-actuator, a slider and a suspension to support the micro-actuator and the slider. The suspension comprises a flexure for mounting the micro-actuator thereon, a suspension tongue connected to the flexure and an independent spacer sandwiched betw |
| 7552524 |
Method for preventing TMR MRR drop of a slider |
June 30, 2009 |
| A method for preventing TMR (tunnel magneto-resistance) MRR (magneto-resistance resistance) drop of a slider, comprises steps of: positioning a row bar constructed by a plurality of slider structural bodies on a tray, each slider body having a pole tip with a TMR element; loading the |
| 7551405 |
Rotational PZT micro-actuator with fine head position adjustment capacity, head gimbal assembly, |
June 23, 2009 |
| A Head Gimbal Assembly (HGA) of the invention includes a slider; a micro-actuator to adjust the position of the slider; and a suspension to support the slider and the micro-actuator. The micro-actuator includes two side arms; a load plate for supporting the slider, which is connected |
| 7551403 |
HSA with air turbulence preventing structure for HGA, disk drive unit with the same, and manufac |
June 23, 2009 |
| A HSA of the present invention includes a voice coil; an E-block connected to the voice coil, which including at least one actuator arms; at least one HGAs, wherein each HGA is swaged on a tip of the respective actuator arm and includes a suspension having a flexure for supporting a slid |
| 7551394 |
Magnetic head for perpendicular magnetic recording having a multilayer shield structure and meth |
June 23, 2009 |
| A magnetic head comprises a pole layer, a shield layer, a gap layer disposed between the pole layer and the shield layer, and a coil. The shield layer incorporates a first layer, a second layer, a third layer and a fourth layer that are disposed on the gap layer one by one. The first |
| 7551386 |
Head gimbal assembly with flying height controller, disk drive unit using the same, and flying h |
June 23, 2009 |
| A HGA comprises a slider, a suspension to load the slider, a flying height controller for controlling flying height of the slider; and a flexible cable to be electrically connected with the slider and the flying height controller. In the present invention, the flying height controller |
| 7549216 |
Method of manufacturing a thin film magnetic head |
June 23, 2009 |
| The invention is directed to a method for manufacturing a thin film magnetic head comprising forming a first coil, a first pole piece and a first back gap piece on a first insulating film formed on a surface of a first magnetic film, so that the first coil, the first pole piece and the |
| 7549214 |
Method for bonding slider row bars for photolithography process |
June 23, 2009 |
| Certain example embodiments relate to a method for bonding slider row bars for a photolithography process. A holding device having a sticky surface is formed. A plurality of slider row bars is provided, with each having a first surface for forming an air bearing surface and a second surf |
| 7542242 |
FPC with via holes with filler being welded to suspension and drive apparatus |
June 2, 2009 |
| A suspension includes a flexure constituted by a metal plate member, for supporting a head slider provided with at least one head element, a load beam provided with a top end section and constituted by a metal plate member, for supporting the flexure at the top end section, and an in |
| 7540077 |
Method for bonding slider row bars for photolithography process |
June 2, 2009 |
| A method for bonding slider row bars for photolithography process, includes steps of: providing a first carrier plate having a sticky surface; providing slider row bars each having a first surface for forming ABS and an opposite second surface, and securing each slider row bar to the |
| 7538984 |
Rotational PZT micro-actuator with a rotatable plate |
May 26, 2009 |
| A micro-actuator for a head gimbal assembly includes a metal frame, PZT elements, and a rigid beam. The metal frame includes a top support adapted to support a slider of the head gimbal assembly, and a pair of side arms extending vertically from respective sides of the top support. T |
| 7535680 |
Micro-actuator with integrated trace and bonding pad support |
May 19, 2009 |
| A micro-actuator for a head gimbal assembly includes a frame, a first set of bonding pads provided to one end of the frame, a second set of bonding pads provided to an opposing end of the frame, and a trace integrated to the frame. The trace interconnects the first set of bonding pads an |
| 7526857 |
Method of manufacturing thin-film magnetic head |
May 5, 2009 |
| A method of manufacturing a thin-film magnetic head including the step of forming a thin-film coil. The step of forming the thin-film coil forms: a flat first coil of a single turn; a flat second coil of two turns arranged to sandwich the first coil from inner and outer sides thereof; a |
| 7525770 |
Thin film magnetic head and method of manufacturing same |
April 28, 2009 |
| A thin film magnetic head capable of shortening a manufacturing time and a method of manufacturing the same are provided. After forming a write gap layer by using a non-magnetic conductive material such as copper, a top pole is formed on the write gap layer by growing a plating film with |
| 7525769 |
Micro-actuator having swing support to allow horizontal swinging movement of slider support |
April 28, 2009 |
| A thin film piezoelectric (PZT) micro-actuator is disclosed. Two thin film pieces of PZT are couple to a slider support frame. The slider support frame has a slider support connected by a leading beam to a base. The two thin film pieces of PZT connect the slider support to the base. Appl |
| 7525768 |
Electrical connection between a suspension flexure cable and a head stack assembly flexible circ |
April 28, 2009 |
| A method and apparatus for electrically coupling a slider to a controller circuit are disclosed. In one embodiment, a pre-amplifier with an integrated electrical connector (I-connector) may be connected via an electrical trace to a slider and via a head stack assembly flexible circui |
| 7525763 |
Head gimbal assembly with particle filter device, and disk drive unit with the same |
April 28, 2009 |
| A HGA includes a slider, a suspension to load the slider, and a particle filter device to fix in leading side of the slider. The particle filter device is made of power material or porous material. The HGA further comprise a micro-actuator to connect with the slider. Because the part |
| 7522384 |
Method of head stack assembly flexible circuit assembly attached to an actuator arm |
April 21, 2009 |
| A method for mounting a head stack assembly (HSA) circuit assembly is disclosed. A flexible circuit substrate may be coupled to a stiffener. The stiffener may be a metal, such as aluminum, or some other stiff and durable material. The flexible circuit substrate may be made of an orga |
| 7522383 |
System and method for damage prevention by improving the shock resistance of a hard disk actuato |
April 21, 2009 |
| A system and method are disclosed for improving the vibration/ mechanical shock-resistance of a hard disk actuator arm. A guide block is located behind the actuator arm's angular range of motion, preventing over-flexure/vibration during operation, and/or the drive's actuator screw he |
| 7518826 |
Perpendicular magnetic recording head and magnetic recording apparatus |
April 14, 2009 |
| A perpendicular magnetic recording head capable of preventing information erasing without intention at the time of non-recording through making the magnetic domain structure of a pole layer appropriate is provided. A main pole layer is formed so as to include a first pole layer portion h |
| 7513820 |
Method and apparatus for producing micro-texture on a slider substrate using chemical and mechan |
April 7, 2009 |
| A system and method for producing micro-texture on a slider substrate using chemical & mechanical polishing techniques is described. In certain embodiments of the present invention, this is accomplished by a method comprising formulating an abrasive slurry solution of predetermined a |
| 7508634 |
Micro-actuator, vibration canceller, head gimbal assembly, and disk drive unit with the same |
March 24, 2009 |
| A head gimbal assembly (HGA) for a disk drive unit that includes a micro-actuator, a slider and a suspension to load the slider and the micro-actuator. The micro-actuator is provided with a vibration canceller that counteracts forces generated by activation of the micro-actuator when |
| 7508630 |
Thin film magnetic head and method of manufacturing the same |
March 24, 2009 |
| The present invention provides a method of manufacturing a thin film magnetic head, capable of easily manufacturing a thin film magnetic head with high precision, in which a magnetic shield layer is disposed so as to surround a magnetic pole layer from three directions of a medium ou |
| 7508626 |
Thin film magnetic head having magnetic pole with controlled dimensions |
March 24, 2009 |
| The present invention provides a thin film magnetic head in which a magnetic domain structure of a magnetic pole layer is controlled and fluctuation in recording magnetization caused by leaked magnetic flux generated by unintentional shift of a magnetic domain wall can be prevented. |
| 7506552 |
Micro torque and micro stiffness measurement device |
March 24, 2009 |
| In a method and apparatus for testing a head-gimbal assembly (HGA), a HGA is placed in contact with force transducers mounted on a rotational stage. The force transducers are adjusted to position the transducers around a rotational center of the rotational stage. The rotational stage |
| 7503706 |
MSM photodetector assembly |
March 17, 2009 |
| One embodiment of the invention uses an MSM photodetector that is coupled to a relatively large core optical waveguide, e.g. an HCS fiber or a plastic optical fiber (POF). The MSM photodetector with its low capacitance enables high speed data transmission using large core optical wav |
| 7503107 |
Method for manufacturing a magnetic head using a multi-stage ion milling |
March 17, 2009 |
| A method for manufacturing a magnetic head for perpendicular magnetic recording is disclosed. The method comprising: a first step of depositing a non-magnetic film over and around the main magnetic pole, and subsequently polishing and planarizing the non-magnetic film, wherein the no |
