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| Number | Title | Issue Date |
| 7089651 | Process of manufacturing coil layers using a novel combination of photoexposure and thermal curing to achieve shape control of a photoresist material A method for forming at least two layers of electrical coils and their supportive resistive layers for a magnetic write head having an ultra-short yoke so that the second and any additional coil layers are formed on flat resistive surfaces to eliminate problems asso... | 08/15/2006 |
| 7092195 | Method of using a magnetic write head having an internal heater A method adjusts a flying-height distance between a magnetic write head and a magnetic medium. The method includes positioning the write head in a location spaced from the magnetic medium by the flying-height distance. The write head includes a magnetic yoke and a p... | 08/15/2006 |
| 7092205 | Isolated transducer portions in magnetic heads A magnetic head having an air bearing surface reads and writes data to and from a disc. The magnetic head includes a substrate and a data transducer positioned upon the substrate adjacent the a bearing surface. The data transducer includes a plurality of metallic la... | 08/15/2006 |
| 7088560 | Thin film magnetic head including a heat dissipation layer, method of manufacturing the same and magnetic disk drive Provided are a thin film magnetic head capable of inhibiting an excessive temperature rise while reducing its size in accordance with a higher recording density, and obtaining a higher read output, a method of manufacturing the same, and a magnetic disk drive using ... | 08/08/2006 |
| 7088550 | Magnetic hard disk recording head with self-compensating thermal expansion A magnetic head for reading information from and writing information to a hard magnetic disk having reduced thermal protrusion at the air bearing surface. In some embodiments, a read-head portion of the magnetic head includes one or more read insulation layers, and ... | 08/08/2006 |
| 7086140 | Method of fabricating a thin film magnetic recording head A method of fabricating a thin film magnetic recording head including a perpendicular recording head having an auxiliary pole, a main pole and a shield against an external magnetic field. The shield against the external magnetic field is formed so that an edge of th... | 08/08/2006 |
| 7087183 | Method of using an etchant solution for removing a thin metallic layer A method for removing a thin metallic layer using an etchant solution is provided for essentially eliminating undercutting in a thin metallic layer such as a seed layer in a magnetic recording head. The etchant solution has a suitable solvent additive such as glycer... | 08/08/2006 |
| 7088549 | Thin-film magnetic head having a high recording density and frequency A gap depth determining insulating layer is formed on a lower core layer. A curved face is formed on a front edge face of the gap depth determining insulating layer so as to gradually depart from an ABS surface from the bottom at the lower core layer to the top of t... | 08/08/2006 |
| 7085099 | Thin film magnetic head having spiral coils and manufacturing method thereof The invention is directed to improvement of a write element of a thin film magnetic head. In the write element, a lower coil surrounds in a spiral form a back gap portion, arranged within a height of a lower pole. An upper coil is disposed above the lower coil, surr... | 08/01/2006 |
| 7082672 | Method of manufacturing thin-film magnetic head A thin-film magnetic head comprises a top pole layer incorporating a throat height defining layer and a yoke portion layer. The throat height defining layer is formed as follows. A magnetic layer to be a track width defining portion is formed on a recording gap laye... | 08/01/2006 |
| 7085100 | Magnetic head having a bilayer pole tip A magnetic head having improved overwrite capabilities and reduced fringing fields are described along with methods of making the same. The magnetic head has a first pole piece and a second pole piece. The first pole piece includes a first bottom pole piece layer, a... | 08/01/2006 |
| 7082016 | Multilayer magnetic shields with compensated thermal protrusion A reader formed in a data transducer includes a first shield, a read gap, a second shield, a maanetic compensation layer, and a non-magnetic spacer layer. The first shield is formed of a multilayer comprised of a layer of a first material. The second shield is space... | 07/25/2006 |
| 7079353 | Magnetic head having a write coil structure with a reduced electrical resistance for reducing thermal protrusion Magnetic heads having write coil structures with reduced electrical resistances for reducing thermal protrusion are disclosed. In one illustrative example, a magnetic head includes a magnetic yoke; a write gap layer formed between upper and lower poles of the magnet... | 07/18/2006 |
| 7079355 | Magnetic transducer with a write head having a multi-layer coil A method for producing a magnetic transducer with an inductive write head having a multilayer coil with a high aspect ratio and a short yoke is disclosed. A damascene process is used for two coil layers and a conventional process for the third coil layer. The proces... | 07/18/2006 |
| 7079340 | Apparatus and method of measuring write magnetic field of recording head After a measurement apparatus records a magnetization state of a reference pattern on at least one specific track of a recording medium, it generates a leakage magnetic field of a demagnetization pattern and demagnetizes the magnetization state of the reference patt... | 07/18/2006 |
| 7079354 | Planar magnetic head A magnetic head including a second magnetic pole (P2 pole) that is fabricated upon a write gap layer that is deposited upon a flat surface. To achieve the flat surface, a P1 pole pedestal is formed upon the P1 pole layer with a sufficient thickness that the inductio... | 07/18/2006 |
| 7073250 | Method of manufacturing thin film magnetic head having partial insulating layer formed on bottom pole layer through gap layer A thin film magnetic head wherein a partial insulating layer is formed on a bottom pole layer with a gap layer provided therebetween, the gap depth Gd being regulated by the distance from a surface facing a recording medium to the partial insulating layer. A magneti... | 07/11/2006 |
| 7075750 | Apparatus for patterning a self-aligned coil using a damascene process An apparatus for patterning a self-aligned coil using a damascene process is disclosed. Coil pockets are formed in a first insulation layer disposed over a first pole layer. A barrier/seed layer is deposited along walls of the coil pockets in the insulation layer. C... | 07/11/2006 |
| 7075751 | Thin-film magnetic head and method of manufacturing same A thin-film magnetic head comprises a top pole layer incorporating a throat height defining layer, an intermediate layer, and a yoke portion layer. The yoke portion layer includes a track width defining portion for defining the track width. Each of the throat height... | 07/11/2006 |
| 7075815 | Spin driven resistors and nanogates A spin driven resistor including a magnetic body whose resistance increases due to resonance when subjected to an externally applied magnetic field while in the presence of an externally applied electromagnetic field is presented. The spin driven resistor has applic... | 07/11/2006 |
| 7075756 | Shielded pole writer A read/write head for a disk drive having a magnetoresistive (MR) read element and an inductive write element suitable for perpendicular recording of data onto a disk having a media layer in which the data is stored perpendicularly to the planar surface of the disk ... | 07/11/2006 |
| 7070698 | Methods of fabricating magnetic write heads with side and trailing shield structures One illustrative method of fabricating magnetic write heads includes the acts of forming a pole tip structure at least partially over a magnetic shaping layer; forming non-magnetic materials around and over the pole tip structure; etching side shield voids within th... | 07/04/2006 |
| 7070716 | Method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation A method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation is disclosed. The transverse field disposed proximate the pole-tip helps the conventional driving field in rotating th... | 07/04/2006 |
| 7072142 | Apparatus for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation An apparatus for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operation is disclosed. The transverse field disposed proximate the pole-tip helps the conventional driving field in rotatin... | 07/04/2006 |
| 7068477 | Magnetoresistive film with nickel iron alloy soft magnetic layer having face and body-centered cubic lattice crystals A soft magnetic layer is made of nickel iron alloy containing crystals of the face-centered cubic lattice and crystals of the body-centered cubic lattice. The face-centered cubic lattice serves to establish a soft magnetic property in the nickel iron alloy. The body... | 06/27/2006 |
| 7068467 | Thin film magnetic head and magnetic disk apparatus including the same Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negati... | 06/27/2006 |
| 7068468 | Thin-film magnetic head, head gimbal assembly with thin-film magnetic head and magnetic disk apparatus with head gimbal assembly A thin-film magnetic head includes at least one thin-film magnetic head element with an ABS, and at least one heating means located at a position opposite to the ABS with respect to the at least one thin-film magnetic head element. The at least one heating means is ... | 06/27/2006 |
| 7068453 | Thermally-assisted perpendicular magnetic recording system and head A thermally-assisted perpendicular magnetic recording head includes a write pole tip for generating a magnetic write field in the perpendicular magnetic recording layer, a magnetic shield that confines the write field essentially to the data track to be recorded, an... | 06/27/2006 |
| 7064930 | Slider deposits for control of pole-to-disc spacing A head for a disc drive and a method of making the head. The head includes a substrate with a trailing side and a first air bearing surface that generates lift. A magnetic transducer is deposited along the trailing side and has a pole tip that is spaced apart from a... | 06/20/2006 |
| 7062839 | Method of manufacturing thin-film magnetic head In a method of manufacturing a thin-film magnetic head, a bottom pole layer is formed and a thin-film coil is formed on the bottom pole layer. A recording gap layer is then formed on the pole portion of the bottom pole layer. Next, the recording gap layer and a port... | 06/20/2006 |
| 7062838 | Method of forming an embedded read element A method of forming an embedded read element is used in the fabrication process of a magnetic head assembly including write and read heads. In this method, three photolithographic patterning steps are applied for defining the designed height of the embedded read ele... | 06/20/2006 |
| 7064924 | Thin laminated single pole perpendicular write head Single write poles tend to large shape anisotropy which results in a very large remnant field when not actually writing. This has now been eliminated by giving the write pole the form of a three layer laminate in which two ferromagnetic layers are separated by a non... | 06/20/2006 |
| 7064925 | Magnetic head for reducing projection of retrieving and writing unit from float surface, and magnetic recording/retrieving apparatus using the same A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in r... | 06/20/2006 |
| 7061719 | Thin film magnetic head and method of manufacturing the same A thin film magnetic head which has a thin film coil for generating a magnetic flux and a magnetic pole layer for emitting the magnetic flux generated by the thin film coil toward a recording medium. The magnetic pole layer having a stacked structure including a mai... | 06/13/2006 |
| 7061718 | Thin film magnetic head having thin film coil embedded in first insulating layer covered with second insulating layer On a first magnetic layer 27, is formed a ring-shaped insulating layer 28 whose air bearing surface side edge defines a reference position for a throat height, and after forming a write gap layer 29, a second magnetic layer 30 is formed s... | 06/13/2006 |
| 7060207 | Thin film magnetic head and magnetic recording apparatus having a lowered coil resistance value, reduced generated heat, and high-frequency The invention is directed to improvement of a thin film magnetic head of a magnetic recording apparatus. The magnetic head includes a write element, in which a first coil and a second coil are provided on a first insulating film formed on one surface of a first magn... | 06/13/2006 |
| 7061716 | Thin-film magnetic head and method of manufacturing same A thin-film magnetic head includes a bottom pole layer, a top pole layer, a recording gap layer, and a thin-film coil. The bottom pole layer has first to fifth layers. The third layer and the fifth layer constitute a coupling portion for establishing magnetic coupli... | 06/13/2006 |
| 7061717 | Yoke structure with constricted width In current high density magnetic memory systems a large write current is used, giving its waveform a large overshoot. This often brings about severe excess saturation of the media so the recorded transition quality degrades. This problem has been overcome by constri... | 06/13/2006 |
| 7061726 | Thin film magnetic head A magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less is used for forming at least one of a lower shield or an upper shield. A laminated film comprising a layer of the magnetic material having a low coefficient of the... | 06/13/2006 |
| 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 |
