| Entries |
| Document | Title | Date |
|---|
| 20090141400 | Magnetic disk drive and control method thereof - Embodiments of the present invention provide a magnetic disk drive capable of suppressing variations in flying height of a magnetic head caused by decrease in the amount of a low density gas inside a housing and a control method therefore. According to one embodiment, the magnetic disk drive includes a magnetic head, a magnetic disk, and a housing containing the magnetic head and the magnetic disk, wherein the housing is filled with a low density gas having a lower density than air. An amount of the low density gas in the housing is estimated and, based on the amount of the low density gas, a flying height of the magnetic head from a surface of the magnetic disk is controlled. | 06-04-2009 |
| 20090244777 | MANUFACTURING METHOD OF MAGNETIC RECORDING MEDIUM - A disclosed method for manufacturing a magnetic recording medium includes a first step of forming a magnetic recording film on a non-magnetic substrate and a second step of forming, in the magnetic recording film, a magnetic recording region which is magnetically recordable and an isolation region which is magnetically non-recordable and includes a first isolation-region portion and a second isolation-region portion. The second step includes the sub-steps of performing first ion implantation on the magnetic recording film to form the first isolation-region portion along a boundary of the isolation region to be formed with the magnetic recording region to be formed; and performing second ion implantation on the magnetic recording film to form the second isolation-region portion in the surface of the isolation region to be formed. | 10-01-2009 |
| 20090244778 | HEAD SUSPENSION ASSEMBLY AND CARRIAGE ASSEMBLY - A head suspension assembly comprising: a head suspension; a head slider having the medium-opposed surface opposed to a storage medium, the head slider having the supported surface received on the head suspension, the supported surface being defined at the farside of the medium-opposed surface; an electromagnetic transducer embedded in the medium-opposed surface of the head slider; a light waveguide incorporated in the head slider, the light waveguide extending from the supported surface to the medium-opposed surface; and an optical element interposed between the supported surface and the head suspension, wherein the optical element defines: a light-collecting surface configured to collect light input into the optical element in parallel with the supported surface; and a light-reflective surface configured to reflect the light at a predetermined angle so as to direct the light to the light waveguide. | 10-01-2009 |
| 20100134924 | STORAGE DEVICE - According to one embodiment, a storage device includes at least one storage disk fixed to a hub mounted on a motor by a disk fixing mechanism, and a head configured to read and write information from and to the storage disk. The disk fixing mechanism includes a clamp ring, including a mounting hole on an inner peripheral side thereof through which the clamp ring is attached to the hub by a screw and a pressing portion for pressing the disk and a balance adjustment recess on an outer peripheral side thereof, and a balance wire attached to the balance adjustment recess. A first portion from the inner peripheral side to the pressing portion of the clamp ring and a second portion with the balance adjustment recess are formed of different materials. | 06-03-2010 |
| 20100271732 | Magnetic Head Suspension - In a magnetic head suspension according to the present invention, each of paired right and left connecting beams that are positioned on both sides in a suspension width direction of an open section, with which piezoelectric elements are at least partially overlapped in a plan view, and connect a proximal end section directly or indirectly connected to a main actuator and a distal end section to which a load bending part is connected includes a convex portion projecting in a thickness direction that is perpendicular to the disk surface. The configuration makes it possible to improve the impact resistance and raise the resonance frequency of a magnetic head suspension capable of performing micro motion of a magnetic head slider by the piezoelectric elements. | 10-28-2010 |
| 20110075298 | FLUID DYNAMIC BEARING SYSTEM HAVING A LOW OVERALL HEIGHT AND A SPINDLE MOTOR HAVING THIS KIND OF BEARING SYSTEM - Proposed is a fluid dynamic bearing system having a bearing bush, a shaft rotatably supported in a bearing bore of the bearing bush and a hub connected to the shaft. A bearing gap filled with bearing fluid and having an axial section is defined between the shaft, the bearing bush and the hub. A first and a second fluid dynamic radial bearing are disposed along the axial section of the bearing gap, the radial bearings being marked by grooved bearing patterns on the associated bearing surfaces of the shaft and/or of the bearing bush. The two radial bearings have a mutual distance d | 03-31-2011 |
| 20130050876 | MAGNETIC SENSORS HAVING PERPENDICULAR ANISOTROPY FREE LAYER - Disclosed herein are magnetic sensors that include: a sensor stack having a front and an opposing back, wherein the front of the sensor stack defines an air bearing surface of the magnetic sensor, and the sensor stack includes: a free layer assembly having a second magnetization direction, that is substantially perpendicular to a plane of each layer of the sensor stack; and a stabilizing structure positioned away from the air bearing surface at the back of the sensor stack. | 02-28-2013 |
| 20130163119 | Head-Media Interface in a Hard Disk Drive - A hard disk drive comprising a mixed layer is provided to reduce the head-media spacing in the hard disk drive by embedding a surface of a magnetic recording medium or head of the hard disk drive with energetic ions. The mixed layer provides sufficient protection against corrosion and wear of the magnetic layer of the magnetic recording medium without requiring any DLC and/or lubricant overcoat. | 06-27-2013 |
