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| Number | Title | Issue Date |
| 8089723 | Damping control in magnetic nano-elements using ultrathin damping layer A write head and a method for forming the write head. The method includes providing a first pole and a second pole for the write head. The first pole and the second pole are formed from a ferromagnetic material. Regions of the write head including at least a portion... | 01/03/2012 |
| 8085496 | Thin-film magnetic head with through holes reaching medium-opposed surface Provided is a thin-film magnetic head for reading data from a magnetic recording medium and/or writing data to a magnetic recording medium, in which the magnetic spacing can be controlled appropriately by stably adjusting the pressure working between the thin-film m... | 12/27/2011 |
| 8054579 | Magnetic head having three modules A magnetic head according to one embodiment includes a first module having a flat profile tape bearing surface, a second module having a flat profile tape bearing surface, and a third module having a flat profile tape bearing surface. The third module is positioned ... | 11/08/2011 |
| 8009386 | Magnetic tape head with magnetic head layer formed on base substrate A magnetic tape head has a base substrate, a magnetic head layer formed on the base substrate, and a closure piece formed on the magnetic head layer. The distance from a first plane comprising a point on the tape bearing surface of the base substrate to a third plan... | 08/30/2011 |
| 7990651 | Method of manufacturing a perpendicular magnetic write head with stepped trailing magnetic shield with electrical lapping guide control A method for manufacturing a magnetic write head having a stepped trailing shield. The stepped trailing shield is formed by forming a non-magnetic bump over a write pole prior to electroplating a wrap-around magnetic shield. The method allows the location of the fro... | 08/02/2011 |
| 7916424 | Magnetic head with wear resistant portion between an overcoat formed above a transducer of the magnetic head and a media-proximal surface of the magnetic head A magnetic head according to one embodiment includes a substrate; at least one transducer formed above the substrate, the at least one transducer being selected from a group consisting of a reader and a writer; an overcoat portion formed above the at least one trans... | 03/29/2011 |
| 7911736 | Storage device and method of using a head that has a concave surface when powered down A storage device and method use a head that is fabricated using photolithography, and the head is purposely powered up during a material removal process, such as lapping, so that the head's expansion (that would be formed on being powered up during normal usage in a... | 03/22/2011 |
| 7898765 | Thin-film magnetic head with grooves on medium-opposed surface and manufacturing method of the head Provided is a thin-film magnetic head that can be adequately contacted with the magnetic recording medium, and thus, can perform read and write operations sufficiently and stably. This head comprises: at least one magnetic head element for reading and/or writing dat... | 03/01/2011 |
| 7881010 | Process for self-aligned flare point and shield throat definition prior to main pole patterning A method for manufacturing a magnetic write head having a write pole with a flared step feature that defines a secondary flare point. The method involves depositing a magnetic write pole material on a substrate and then depositing a magnetic material over the write ... | 02/01/2011 |
| 7869160 | Perpendicular recording head with shaped pole surfaces for higher linear data densities A perpendicular recording head is provided having a bottom pole, a writer pole disposed above the bottom pole, and a top shield disposed above the writer pole. The bottom pole and the top shield are both magnetically coupled to the writer pole. The writer pole inclu... | 01/11/2011 |
| 7859790 | Transducers for perpendicular recording with write pole tip angled toward media A write pole tip for a magnetic head has a trailing edge that is closer than a leading edge to a perpendicular recording medium, so that the write signal strength of the trailing edge is greater than that of the leading edge. Such an angled pole tip can write a shar... | 12/28/2010 |
| 7796360 | Perpendicular magnetic recording head and method of manufacturing the same A perpendicular magnetic recording head and method of manufacturing the same are provided. The perpendicular magnetic recording head records or reads information on or from a perpendicular magnetic recording medium. The perpendicular magnetic recoding head includes ... | 09/14/2010 |
| 7773340 | Patterned magnetic recording head having a gap pattern with substantially elliptical or substantially diamond-shaped termination pattern A thin-film magnetic recording head utilizing a timing based servo pattern is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined by the thin film. The gap pattern includes termin... | 08/10/2010 |
| 7751146 | Abs through aggressive stitching Aggressive (i.e. tight tolerance) stitching offers several advantages for magnetic write heads but at the cost of some losses during pole trimming. This problem has been overcome by replacing the alumina filler layer, that is used to protect the stitched pole during... | 07/06/2010 |
| 7746597 | Slider having protective films of differing hydrogen content A slider comprises an air bearing surface which is arranged to face a recording medium and a protective film which covers at least a part of the air bearing surface. The protective film includes a first protective film formed on the air bearing surface and made of a... | 06/29/2010 |
| 7733603 | Reduced tape stick tape drive systems A read and/or write head for a tape drive system has a tape bearing surface that includes relatively smooth areas surrounded by relatively rough areas. Read and/or write elements are located in the smooth areas. ... | 06/08/2010 |
| 7675709 | Magnetic write head having a stair notched, steep shouldered pole and a write gap bump A magnetic write head structure that maximizes write field strength while minimizing stray fields. The write pole structure maximizes write field strength by minimizing saturation of the magnetic pole tips, and minimizes stray field writing by preventing magnetic fi... | 03/09/2010 |
| 7660072 | Magnetic head with planar outrigger A magnetic head includes a substrate having a first tape bearing surface and a second (outrigger) tape bearing surface, preferably with a slot therebetween. A plurality of elements (readers and/or writers) are coupled to the substrate and positioned towards the firs... | 02/09/2010 |
| 7616403 | Winged design for reducing corner stray magnetic fields Embodiments of the present invention are directed to structures of a recording head having a winged design for reducing corner stray magnetic fields. In one embodiment, the present invention comprises a magnetic recording head comprising a plurality of components. I... | 11/10/2009 |
| 7570457 | Tape recording head with trench defining wear zone for constant rate of head wear A magnetic recording head is provided comprising a flat contour head having a deposited closure. An ion-milled trench or recess is provided near the substrate edge to create a lip or wear zone between the trench edge and the substrate/gap interface. As the tape pass... | 08/04/2009 |
| 7545603 | Magnetic head and manufacturing method thereof A magnetic head and a manufacturing method thereof which can suppress side fringing and permeation of a recording magnetic field in the first direction while maintaining the intensity of a recording magnetic field. By making a length of a trailing upper surface of a... | 06/09/2009 |
| 7508624 | Transducers for perpendicular recording with write pole tip angled toward media A write pole tip for a magnetic head has a trailing edge that is closer than a leading edge to a perpendicular recording medium, so that the write signal strength of the trailing edge is greater than that of the leading edge. Such an angled pole tip can write a shar... | 03/24/2009 |
| 7441325 | Perpendicular head with trailing shield and rhodium gap process A perpendicular write head including a main pole and a trailing shield, the main pole being made of a diamond-like carbon (DLC) layer as hard mask and a rhodium (Rh) layer as shield gap, both DLC and Rh layers being CMP stop layers so as to avoid corner rounding and... | 10/28/2008 |
| 7429493 | Method for fabricating a magnetic head for perpendicular recording using a CMP lift-off and resistant layer A method using a CMP resistant hardmask in a process of fabricating a pole piece for a magnetic head is described. A set of layers used as the mask for milling the pole piece preferably includes a CMP resistant hardmask of silicon dioxide, a resist hardmask, an uppe... | 09/30/2008 |
| 7418778 | Method for producing a CPP thin-film magnetic head A CPP thin-film magnetic head includes a bottom shield layer; a top shield layer, the bottom shield layer and the top shield layer being disposed at a predetermined interval; a thin-film magnetic head element between the bottom shield layer and the top shield layer;... | 09/02/2008 |
| 7398591 | Manufacturing method of a thin-film magnetic head The present invention relates to a manufacturing method of a thin-film magnetic head whereby re-deposition and an overlapped part in a region of a magnetoresistive effect multi-layered structure opposite to an air bearing surface can be removed and also a width of a... | 07/15/2008 |
| 7398592 | Manufacturable CMP assisted liftoff process to fabricate write pole for perpendicular recording heads This invention describes a manufacturable method, including a CMP liftoff process, for removing masking materials after ion milling for fabricating the write pole of a magnetic head. Significant parameters for the CMP assisted liftoff process include the thickness o... | 07/15/2008 |
| 7395595 | Method for manufacturing P3 layer of a perpendicular magnetic write head A method for forming a P3 layer with NiFe and alumina mask using resist shrink process for use in perpendicular magnetic write heads. The method includes forming a laminated layer, forming an alumina layer on top of the laminated layer, depositing a conductiv... | 07/08/2008 |
| 7392578 | Thin film magnetic head and manufacturing method thereof A method for manufacturing a thin film magnetic head with a write element, the write element having a first yoke portion and a second yoke portion connected to each other by a back gap portion, a first pole portion and a second pole portion disposed in the medium-fa... | 07/01/2008 |
| 7392577 | Method for manufacturing a perpendicular magnetic head A method of manufacturing a perpendicular magnetic head is disclosed, including perpendicular magnetic recording head includes forming a primary magnetic pole having a flat top surface, where a shield layer over the primary magnetic pole and at the sides of the prim... | 07/01/2008 |
| 7392579 | Method for protecting a slider mounted CPP GMR or TMR read head sensor from noise and ESD damage A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnection... | 07/01/2008 |
| 7389578 | Manufacturing method of a perpendicular recording magnetic head Embodiments in accordance with the present invention relate to methods wherein when a main pole is processed by using an ion milling technique, a re-adhesion layer created on the side face of the resist mask is removed with certainty. In one embodiment, an inorganic... | 06/24/2008 |
| 7386933 | Method of fabricating thin film write heads with a shortened yoke and improved dimension control A method for fabricating a magnetic recording head writer. The writer includes a bottom magnetic pole and a write gap formed over the bottom pole and a coil trench formed in the bottom pole. A top magnetic pole is provided as two layers with the first layer includin... | 06/17/2008 |
| 7386934 | Double layer patterning and technique for milling patterns for a servo recording head Double photolithography is used to produce an under-layer of protective and filtering photoresist over a substrate that will have channels milled with a FIB. Secondary layers are applied with precision on top of the first layer in order to define the precise pattern... | 06/17/2008 |
| 7377024 | Method of making a magnetic write head with trailing shield throat pad A method of fabricating a magnetic transducer is described which uses a trailing shield throat pad to set the trailing shield throat height. The trailing shield throat pad is used as a part of the structural form over which the material for the trailing shield is fo... | 05/27/2008 |
| 7372656 | disk drive with side erase control Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically ... | 05/13/2008 |
| 7372667 | Thin-film magnetic head, head gimbal assembly with thin-film magnetic head, head arm assembly with head gimbal assembly, magnetic disk drive apparatus with head gimbal assembly and manufacturing method of thin-film magnetic head A thin-film magnetic head comprising an inductive element including at least: a lower magnetic pole; a write gap layer; and an upper magnetic pole opposed to the lower magnetic pole through the write gap layer, a width WP2 in a track-width direction at a ... | 05/13/2008 |
| 7367112 | Method of fabricating a head for perpendicular magnetic recording with a self-aligning side shield structure A method is provided for fabricating a head for perpendicular recording with self-aligning side shields. The voids where the side shields will be formed are milled into the layer of material for the pole tip to achieve self-alignment. A mask is patterned with openin... | 05/06/2008 |
| 7369357 | Magnetic head, head suspension assembly, magnetic reproduction apparatus, and method of manufacturing magnetic head A magnetic head for use in the vicinity of a magnetic recording medium, comprising a substrate, a close contact layer laminated on the substrate, and a protective layer which is laminated on the close contact layer and which faces the magnetic recording medium, the ... | 05/06/2008 |
| 7368227 | Method to print photoresist lines with negative sidewalls It is very difficult to produce a negative wall angle from either negative or positive-tone chemically amplified resists, especially by e-beam lithography. This problem has now been overcome by first forming a photoresist pedestal in the conventional way, followed b... | 05/06/2008 |
