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| Number | Title | Issue Date |
| 8164853 | Perpendicular magnetic write head with side shield saturation magnetic flux density increasing away from magnetic pole A perpendicular magnetic write head is provided with a magnetic pole and a pair of side shields disposed on both sides of the magnetic pole in a cross track direction with side gaps in between. Each of the pair of side shields is configured in such a manner that a s... | 04/24/2012 |
| 8159782 | Thin film magnetic head having heating element A thin film magnetic head is provided, in which the amount of protrusion in the periphery of an element portion can be reduced or a local temperature increase of electrode leads of a heating element can be prevented. The thin film magnetic head includes a playback e... | 04/17/2012 |
| 8149540 | Magnetic head structure with diagonal of rectangular-shaped height monitor extending along track width direction In a magnetic head structure that forms a medium facing surface of a head element unit by polishing processing, a height monitor that is exposed in the vicinity of the head element unit during the polishing processing to index the height of the head element unit is ... | 04/03/2012 |
| 8144427 | Magnetic head, head assembly and magnetic recording/reproducing apparatus The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a... | 03/27/2012 |
| 8049990 | Cleaning tape and method of producing same A cleaning tape has a base tape made of a synthetic resin and a cleaning layer formed on a surface of this base tape. The cleaning layer has a binding agent and a large number of spherical particles dispersed in the binding agent in a single particle layer. Such a c... | 11/01/2011 |
| 8045293 | Thin film magnetic head including thermal deformation-preventing layer A thin film magnetic head includes a recording and playback element, a lead conductor layer for feeding a power to the recording and playback element, an electrically conductive bump for conductively connecting the lead conductor layer to an electrode pad for extern... | 10/25/2011 |
| 8023228 | Heat assisted magnetic recording head and method of manufacturing the same A heat assisted magnetic recording (HAMR) head and manufacturing method are provided. The HAMR head is mounted on a slider having an air-bearing surface (ABS) and includes a substrate; a recording unit formed on the substrate and having a stepped end; a waveguide lo... | 09/20/2011 |
| 8004794 | Perpendicular magnetic recording head laminated with AFM-FM phase change material A PMR writer is disclosed that minimizes pole erasure during non-writing and maximize write field during writing through an AFM-FM phase change material that is in an AFM state during non-writing and switches to a FM state by heating during writing. The main pole la... | 08/23/2011 |
| 7965469 | Tape cartridge and tape loading system using same There are provided a tape cartridge which can reliably remove contamination adhering to the surface of a head and a tape loading system using the same. A tape such as recording tapes and leader tapes is unreeled from a case body housing the tape and is taken up to t... | 06/21/2011 |
| 7957098 | Magnetic recording head and magnetic recording apparatus A magnetic writing head includes: a main magnetic pole; a laminated body; and a pair of electrodes. The laminated body includes a first magnetic layer having a coercivity lower than magnetic field applied by the main magnetic pole, a second magnetic layer having a c... | 06/07/2011 |
| 7948711 | Article of manufacture to automatically clean a tape drive A system, a method, and article of manufacture are employed to clean the input/output transducers on tape drives, verified by the tape drives reading alphanumeric information from data tracks and servo tracks of a cleaner tape. An aggressive cleaning frontcoat secti... | 05/24/2011 |
| 7903373 | Thin film magnetic head having heating element A thin film magnetic head is provided, in which the amount of protrusion in the periphery of an element portion can be reduced or a local temperature increase of electrode leads of a heating element can be prevented. The thin film magnetic head includes a playback e... | 03/08/2011 |
| 7889458 | Write head with self-cross biased pole for high speed magnetic recording A magnetic write head having a magnetic cross yoke arranged to provide a cross magnetic field in a pole tip region of the magnetic head. The cross field, which is perpendicular to the magnetization of write pole, reduces the switching time of the write field, thereb... | 02/15/2011 |
| 7817375 | Magnetic recording head having spin wave oscillator which locally heats a recording track A magnetic recording head includes a spin wave oscillator having a lamination film including a first magnetic layer and a second magnetic layer, and a pair of electrodes adapted to inject a current between the first magnetic layer and the second magnetic layer to ge... | 10/19/2010 |
| 7782567 | Cleaning system for tape head and tape drive system implementing same A tape drive system according to one embodiment includes a tape head; a guide mechanism for passing a magnetic recording tape over the head; and a cleaning device for cleaning the head, wherein, while the tape is adjacent the head, a relative spacing between the tap... | 08/24/2010 |
| 7777990 | Magnetic disk unit and magnetic head slider In a magnetic disk unit, the flying height margin of a magnetic recording element part during recording is reduced, whereby improvement in recording density and increase in capacity or decrease in size of the unit is realized. In one embodiment, a magnetic disk unit... | 08/17/2010 |
| 7724472 | System and method for cleaning a tape drive A system, a method, and article of manufacture are employed to clean the input/output transducers on tape drives, verified by the tape drives reading alphanumeric information from data tracks and servo tracks of a cleaner tape. An aggressive cleaning frontcoat secti... | 05/25/2010 |
| 7724469 | High frequency field assisted write device A magnetic writer includes a write element and an oscillation device disposed adjacent to the write element. The first oscillation device includes a first magnetic layer, a second magnetic layer having a magnetization vector including a component perpendicular to a ... | 05/25/2010 |
| 7724471 | Thin-film magnetic head with heating means for adjusting magnetic spacing A thin-film magnetic head that the protrusion of the head end surface due to heat generated from the heating means becomes large enough to set the magnetic spacing dMS to the smaller value efficiently is provided. The head comprises: a substrate having an... | 05/25/2010 |
| 7688547 | Mechanism for read/write device, read/write device, and method of cleaning read/write head A head cleaning mechanism for a read/write device includes an arm with serially connected arm members that supports a cleaning component. The arm members fold as the arm is wound about a shaft formed on a guide plate which guides a stud attached to the arm as it is ... | 03/30/2010 |
| 7672081 | Perpendicular magnetic recording head A perpendicular magnetic recording head which moves in a track direction of a recording layer of a perpendicular magnetic recording medium to write information on the recording layer or read information from the recording layer. The perpendicular magnetic recording ... | 03/02/2010 |
| 7656614 | Tape drive A tape back-up drive having a head assembly. The head assembly includes a head configured to read data from a tape and to write data to the tape. The head assembly also includes at least one tape guide disposed adjacent to the head. ... | 02/02/2010 |
| 7643247 | β-phase tantalum thin-film resistor and thin-film magnetic head with the resistor A thin-film resistor that has a stable electric resistance, the phase transformation to the α-phase being suppressed even in the high temperature environment, is provided. The thin-film resistor has a layered structure of: a base layer formed of a double-layered fi... | 01/05/2010 |
| 7612965 | Thin-film magnetic head having heatsink wider on air bearing surface side A thin-film magnetic head with a higher protrusion efficiency is provided, which comprises: a substrate with an air bearing surface (ABS); a read head element including a lower and upper shield layers, and a write head element including a magnetic pole layer; a heat... | 11/03/2009 |
| 7593188 | Low protrusion compensation air bearing Magnetic head sliders having air-bearing surfaces designed to reduce the protrusion compensation effect. The magnetic head slider includes: at least one front pad located an upstream portion of the slider and operative to generate a lifting force; and a rear pad tha... | 09/22/2009 |
| 7558021 | Hub lock/head cleaning dual purpose mechanism An exemplary embodiment provides for a tape drive that includes one or more processors, a memory and a mechanism for locking a hub and cleaning a magnetic head. The mechanism includes a plate a brush mount assembly rotatably coupled to the plate wherein the brush mo... | 07/07/2009 |
| 7538977 | Method and apparatus for providing diamagnetic flux focusing in a storage device A method and apparatus for providing improved flux focusing in a write head is disclosed. The present invention uses a diamagnetic material to provide flux focusing in a storage device. An embodiment of the present invention includes diamagnetic material having a ma... | 05/26/2009 |
| 7538978 | Heat assisted magnetic recording head and heat assisted magnetic recording apparatus for heating a recording region in a magnetic recording medium during magnetic recording A heat assisted magnetic recording head is provided, which can prevent an effect of a heat in a laser diode when a magnetic recording region is heated by a heating laser beam and which can reduce its size and weight. In the heat assisted magnetic recording head, a r... | 05/26/2009 |
| 7474504 | Magnetic head heating element in a disk drive A magnetic head slider including: a head element which records or reproduces information on a magnetic disk, a slider having said head element, and an electric conducting film in which paired first and second parts are formed to be substantially parallel, where curr... | 01/06/2009 |
| 7457079 | Magnetic head with rectangular-shaped planar spiral coil and leading core width smaller than trailing core width A thin film magnetic recording head comprises a substrate, a first magnetic core formed on the substrate, a second magnetic core having the front end face with a magnetic gap with respect to the front end face of the first magnetic core, and a coil for developing ma... | 11/25/2008 |
| 7440230 | Perpendicular recording head with floating-trailing shield extending around first and second sides of main pole piece Heads for perpendicular recording using a floating-trailing shield are described. The floating-trailing shield is separated from the main pole piece by a layer of non-magnetic material along its entire length and the air bearing surface of the floating-trailing shie... | 10/21/2008 |
| 7440237 | Thin film magnetic head, head gimbal assembly, and hard disk drive In a thin film magnetic head of the present invention, lead formation patterns of a first lead for connection between a lower shield layer and a first extraction electrode portion and a second lead for connection between an upper shield layer and a second extraction... | 10/21/2008 |
| 7436630 | System and method for reducing micro-discharge events in a data storage device A data storage device head having reduced media induced micro-discharge events. The data storage device head includes a support structure, and a wafer. A mitigation voltage, other than a ground potential, is presented to the wafer at a level sufficient to suppress m... | 10/14/2008 |
| 7433154 | Cleaning tape for cleaning a magnetic head A cleaning tape comprising a support and a coating layer containing powder and a binder, wherein a surface of the coating layer has a central line average roughness of from 5 to 25 nm and has protrusions having height of 25 nm or more in number of from 60 to 1,700/1... | 10/07/2008 |
| 7428124 | Magnetic recording head with resistive heating element and thermal barrier layer A thin film magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge. A magnetic read and write elements are disposed along the trailing surface near the trailing edge. The magnetic write element includes write... | 09/23/2008 |
| 7420776 | Thin-film magnetic head, head gimbal assembly, and hard disk drive A thin-film magnetic head comprises at least one of a magnetoresistive device for reading and an electromagnetic transducer device for writing, and a heating element provided in the head body part. The heating element has an up portion meandering between an origin a... | 09/02/2008 |
| 7382580 | Electrically resistive heating device An electrically resistive heater is formed of a chemically disordered CrxV100-x alloy. The alloy exhibits a high temperature coefficient of resistance (TCR) so that the heater temperature can be inferred from its resistance, minimal ... | 06/03/2008 |
| 7372665 | Magnetic recording head with resistive heating element located near the write coil A magnetic head includes a slider body having a trailing surface meeting an air-bearing surface at a trailing edge, with a thin-film transducer disposed on the trailing surface of the slider body near the trailing edge. The thin-film transducer includes a coil embed... | 05/13/2008 |
| 7372668 | Recording and/or reproducing device having a positioning arrangement for positioning a cleaning brush A brush driving mechanism, which drives a cleaning brush from a retracted position to an operation position opposed to a magnetic head, has a main arm having a tip coupled to the cleaning brush through a shaft. A chassis has a chassis slit, in which the shaft is ins... | 05/13/2008 |
| 7369348 | Method and apparatus for adaptation to humidity in a hard disk drive Hard Disk Drive (HDD) including a humidity sensor. Humidity sensor communicating with embedded circuit to provide humidity reading to alter flying height control asserted to control vertical positioning of slider above disk surface. Method operating HDD using humidi... | 05/06/2008 |
