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| Number | Title | Issue Date |
| 8081399 | Perpendicular magnetic recording write head with enhancement capacitor on slider body for write current overshoot at write current switching Write enhancement circuitry on the head carrier of a magnetic recording disk drive provides additional write current overshoot beyond that provided by the write driver circuitry. An enhancement capacitor is formed with a dielectric layer between two layers of electr... | 12/20/2011 |
| 8054583 | Ta/W film as heating device for dynamic fly height adjustment A dynamic fly heater (DFH) for improved lifetime and better film uniformity is disclosed for a magnetic head. The heater has a lower amorphous Ta layer and an upper W layer to promote small grain size and reduced electro-migration. The composite film is especially a... | 11/08/2011 |
| 7911738 | Magnetic head slider with resistive heating film meandering in stacking direction According to embodiments of the present invention, a magnetic head slider provided with a heater disposed near a read element to adjust flying height, is required to increase a thermal protrusion by heat generated by the heater without increasing a thermal protrusio... | 03/22/2011 |
| 7903374 | Magnetic recording and reading device A magnetic recording and reading device includes a perpendicular magnetic recording medium, a perpendicular magnetic head having a recording head width having a heat-generating portion and a reading head, a fine adjustment portion, and a R/W-IC. The perpendicular ma... | 03/08/2011 |
| 7782566 | Magnetic recording and reading device A magnetic recording and reading device includes a magnetic recording medium having at least one magnetic recording layer, a magnetic head enabling a data transfer rate of more than 50 MB/s and a recording density of more than 5 Gb/in2 on the magnetic rec... | 08/24/2010 |
| 7729088 | Magnetic disk apparatus with heating device and magnetic head slider used therefor Embodiments of the invention achieve a decrease in electric power consumption while ensuring high recording density and high reliability in a magnetic disk apparatus. In one embodiment, a magnetic disk apparatus comprises a rotatable magnetic disk and a magnetic hea... | 06/01/2010 |
| 7649714 | High reliability heater for flying height control Embodiments of the invention improve the power consumption and response speed of a heater for the gap flying height (hg) adjustment, to minimize an influence that the heater has on a life of a read element, and to provide a heater having resistance lines reduced in ... | 01/19/2010 |
| 7643248 | Optoelectronic emitter mounted on a slider An apparatus comprising a slider including a slider substrate with a trailing side and a writer with bond pads disposed on the trailing side. The writer has an optic input for receiving an optic output. The apparatus comprises an optoelectronic substrate having a su... | 01/05/2010 |
| 7558022 | Magnetic disk apparatus with heating device and magnetic head slider used therefor Embodiments of the invention achieve a decrease in electric power consumption while ensuring high recording density and high reliability in a magnetic disk apparatus. In one embodiment, a magnetic disk apparatus comprises a rotatable magnetic disk and a magnetic hea... | 07/07/2009 |
| 7505227 | Apparatus and method for preventing excessive thermal pole tip protrusion in slider of a hard disk drive Slider used to access data on rotating disk in hard disk drive, including heating element as vertical micro-actuator coupled to deformation region including read-write head and to expansion chamber, plate thermally coupled to heat sink. Slider further includes verti... | 03/17/2009 |
| 7492552 | Tape head read/write module A tape head read/write module that has a composite air bearing surface, and a method and apparatus for embedding a chip in a substrate to form a composite air bearing surface. An example of the module includes a substrate that has an air bearing surface, a front, a ... | 02/17/2009 |
| 7382583 | Rotary piezoelectric microactuator and disk drive head-suspension assembly The invention is a moving-slider rotary piezoelectric microactuator as the secondary actuator for a dual-stage actuator disk drive. The microactuator has a substrate attached to the disk drive suspension and a rotatable frame that supports the slider, so the head-su... | 06/03/2008 |
| 7370406 | Method of manufacturing a thin film structure A thin film magnetic head is described, the magnetic head having an insulating layer and a protrusion which has an upper portion and a base portion, and the upper portion has an extended portion. The insulating layer is present under the extending part. A method of ... | 05/13/2008 |
| 7362544 | Thin film magnetic head slider, magnetic head support mechanism, magnetic disk drive, and method of manufacturing magnetic head A thermal flying height adjustment slider capable of being mounted on a small-sized thin film magnetic head slider is provided wherein terminals of an energizer serving as a heater prevent corrosion of pole pieces and the number of terminals is reduced. In one embod... | 04/22/2008 |
| 7330324 | Magnetic disk drive having a function for using a thermal protrusion amount for flying height management and an inspection device having such a function A write head's material having a great thermal expansion coefficient expands due to Joule heat resulting from a write current and a temperature rise dependent on high-frequency core loss, thereby causing the head's flying surface to protrude toward a magnetic disk. ... | 02/12/2008 |
| 7253993 | Head slider with precise positioning actuator and manufacturing method of the head slider A head slider with a precise positioning actuator includes a thin plane shaped head section provided with a first surface that is substantially perpendicular to an ABS of the head slider, a second surface opposite to the first surface and at least one head element f... | 08/07/2007 |
| 7200918 | Method for forming an air bearing surface on a slider Embodiments include a slider having a silicon body and at least one carbide pad structure embedded therein. At least one head structure for reading and/or writing data is located on the silicon body. The silicon body includes an air bearing surface on which the head... | 04/10/2007 |
| 7187514 | Magnetic head assembly and magnetic disc device The present invention implements a magnetic disk drive usable under a wide range of temperature environment conditions, and a magnetic head assembly. The flying height of a magnetic head slider (1) can be controlled against a change of temperature so that the... | 03/06/2007 |
| 7113369 | Head slider, head gimbal assembly, and hard disk drive In the head slider of the present invention, recording and reproducing electrode pads and heater electrode pads are attached to the same surface of an overcoat layer. The heater electrode pads are located on both sides of a group constituted by the recording and rep... | 09/26/2006 |
| 7102856 | Head slider and manufacturing method thereof The head slider in accordance with the present invention comprises a thin-film magnetic head including a magnetoresistive device and an electromagnetic transducer, and a heater adapted to generate heat upon energization. At least one of a reproducing bump, a recordi... | 09/05/2006 |
| 7095594 | Active read/write head circuit with interface circuit A method and apparatus for collocating an interface circuit with a disk drive read/write head is described. In one embodiment the interface circuit is attached to the load arm on one side and the miniflex interconnect on the other. The read/write head is mounted on ... | 08/22/2006 |
| 7061727 | Magnetoresistive head using multilayered varistor material A magnetoresistive includes a magnetoresistive layer which converts magnetic signals to electric signals and a pair of electrodes for allowing an electrically sensing current to flow across the magnetoresistive layer is made between an upper shield and an under shie... | 06/13/2006 |
| 7054085 | Use of shunt resistor with large RA product tunnel barriers A read head for use with an interconnect transmission line having a characteristic impedance of Z0 includes a tunnel valve device and a shunt resistor RS that is connected in parallel across the tunnel valve device. The tunnel valve device has a device re... | 05/30/2006 |
| 7046473 | Method and apparatus for active fly height control with heating and electrical charge A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging surface of the slider, separate from the read/write head, allows a charging electrical interconnect to apply an electrica... | 05/16/2006 |
| 7027263 | Apparatus for look-ahead thermal sensing in a data storage device A slider having leading and trailing edges is configured to fly on an airbearing above a data storage disk rotating from the leading edge to the trailing edge. Read and write heads are mounted on the slider proximate the trailing edge. An auxiliary thermal sensor is... | 04/11/2006 |
| 7027264 | Slider with a slider ground pad electrically connected to write head poles and read head shields According to an aspect of the present invention, there is provided a slider for a disk drive. The slider includes a slider body including a slider body outer surface. The slider further includes an inductive write head including main and return poles. The slider fur... | 04/11/2006 |
| 6927946 | Micro-actuator integrated lead suspension head terminations A technique for electrically interconnecting a disk drive suspension assembly and a micro-actuator mounting a transducer-carrying slider. A first set of termination pads is provided on a generally planar surface of the micro-actuator, adjacent a front edge portion o... | 08/09/2005 |
| 6888693 | Disc drive slider with protruding electrostatic actuator electrode A device for accessing data stored on a medium includes a substrate that has a transducer on a back side, a bottom side facing the disc, and a surface that protrudes from the bottom side. An insulation layer is placed on top of the surface. An electrostatic actuator... | 05/03/2005 |
| 6781781 | Magnetic read head having decode circuitry The present invention features a magnetic read head having an IC component provided within or adjacent to the head case. No low-level, analog signals, which are generally highly susceptible to electrical noise, leave the head structure. Power and ground signals are ... | 08/24/2004 |
| 6744579 | Methods for detecting and mitigating the effects of hard drive head crashes A method for detecting head-to-disk interference events in a disk drive is provided. The invention comprises coupling a transducer to an air filter in the disk drive, wherein the transducer detects changes in magnetic readings due to debris produced by physical cont... | 06/01/2004 |
| 6633445 | Method and apparatus for electrically coupling components in a removable cartridge An information storage device (10, 510, 610, 710) includes a cradle (12, 512, 612, 712) which can removably receive a cartridge (11, 411, 511, 611, 711). The cartridge contains a rotatably supported disk (91, 326-327), and a pivotal actuator arm (101) whi... | 10/14/2003 |
| 6587314 | Enhanced silicon and ceramic magnetoresistive read/write head and a method for producing the same An enhanced silicon and ceramic magnetoresistive read/write head and method for making the same is disclosed. The present invention provides reliable chemical mechanical polish etch stop by etching deep trenches into the silicon at the surrounding edges o... | 07/01/2003 |
| 6496331 | Chip-mounted disk drive suspension The invention provides greatly shortened electrical paths for the wires or traces connecting a disk drive suspension slider to the preamplifier circuit chip without problems of chip wastage by supporting the disk drive suspension assembly of a slider, a f... | 12/17/2002 |
| 6404575 | Read/write preamp integrated head and process for fabricating same A read/write driver with a read/write head made of semiconductor material for writing and reading data from data media with a preamplifier forming a part of the read/write head for processing write signals from said read/write driver and driving a magneti... | 06/11/2002 |
| 6400529 | Integrated circuit chip supporting and electrically connecting a head slider A head assembly has a head slider including a magnetic head and a first electrode, an IC chip supporting the head slider on a principal surface of the IC chip, and a suspension supporting the IC chip, the IC chip comprising a second electrode and a third ... | 06/04/2002 |
| 6078471 | Data storage and/or retrieval method and apparatus employing a head array having plural heads A data storage and retrieval system reads and/or writes data onto a data storage disk defining a recording surface having a radial dimension and at least one data track directed generally transverse to the radial dimension. The system includes a housing h... | 06/20/2000 |
| 6028748 | Magnetic head apparatus including a quarter wavelength transmission line A magnetic head unit of the present invention is provided with a magnetic head having a magnetic impedance element, and a head suspension for suspending the magnetic head is provided with a matching transmission line of one-fourth wavelength for transmitt... | 02/22/2000 |
| 5864241 | Magnetic transducer with wear indicator in a magnetic data storage system A wear indicator is incorporated on the slider of a magnetic transducer in a magnetic storage system for in operation on-the-fly detection of the state of wear of the transducer. The wear indicator involves monitoring a change in an electrical property of... | 01/26/1999 |
| 5712747 | Thin film slider with on-board multi-layer integrated circuit A thin film slider with an on-board multi-layer integrated circuit includes a substrate with an air bearing surface and a substantially parallel upper surface spanned by a deposit end. A magnetic head being formed at the deposit end, positioned to magneti... | 01/27/1998 |
| 5587857 | Silicon chip with an integrated magnetoresistive head mounted on a slider An MR head has its MR stripe protected from electro-static discharge (ESD) on a slider, such as titanium carbide. The MR stripe is protected by a plurality of silicon integrated circuit devices which conduct ESD-induced current from the MR stripe to a sil... | 12/24/1996 |
