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| Number | Title | Issue Date |
| 7145750 | Perpendicular magnetic recording head and perpendicular magnetic recording and reproducing system There is provided a perpendicular magnetic recording and reproducing system in which the overwrite erase ratio of a perpendicular magnetic head has been improved to prevent the deterioration of an overwrite property. In the perpendicular magnetic head, a third magne... | 12/05/2006 |
| 7143505 | Manufacturing method for a thin film magnetic head A thin film magnetic head is capable of reducing inductance by shortening a magnetic path, and also preventing a cavity from being formed in a coil insulating layer. The coil insulating layer is deposited on a lower core layer and at the rear of a recording portion,... | 12/05/2006 |
| 7140094 | Magnetic head and production method for magnetic heads Magnetic heads capable of recording and reading with high sensitivity and resolution are provided by minimizing the outflow of magnetic fluxes from a flux guide to magnetic shields while using a flux guide structure for an MR element. In the magnetic head, magnetic ... | 11/28/2006 |
| 7142391 | Thin film head, producing method thereof and magnetic disk apparatus A lower magnetic pole front end portion is provided on a lower magnetic pole main layer, and then, an upper magnetic pole front end portion or an upper magnetic pole front end layer is formed on the flat surface so as to enhance the track width accuracy of thin film... | 11/28/2006 |
| 7142392 | Thin film head, producing method thereof and magnetic disk apparatus A thin film head having reading part and recording part having an upper magnetic pole front end layer and a lower magnetic pole having a lower magnetic main layer, a lower magnetic pole front end portion on the lower magnetic main layer, and a projection step portio... | 11/28/2006 |
| 7139153 | Magnetic pole tip for perpendicular magnetic recording A method for forming a magnetic structure, such as a pole tip, includes forming a pole tip layer of magnetic material. A layer of polyimide precursor material is added above the pole tip layer and cured. A silicon-containing resist layer is added above the layer of ... | 11/21/2006 |
| 7138195 | Perpendicular magnetic recording media and magnetic storage A double layer perpendicular magnetic recording medium having a high medium S/N ratio at a recording density of 50 Gb/in2 or higher and a magnetic storage apparatus with a lower error rate and excellent reliability are provided. In a perpendicular magneti... | 11/21/2006 |
| 7137191 | Method for manufacturing magnetic head A first insulating layer is formed on a main magnetic pole used as a magnetic pole layer to have a protruding portion and a flat portion formed around the protruding portion. A second insulating layer is formed on the flat portion, and then the protruding portion of... | 11/21/2006 |
| 7134185 | Method of making narrow track width magnetoresistive sensor A method and system for forming a microscopic transducer are described. The method and system include forming a plurality of adjoining sensor layers. The sensor layers include a first magnetically soft layer, a nonmagnetic layer on the first magnetically soft layer,... | 11/14/2006 |
| 7135389 | Irradiation method of laser beam A laser irradiation method using a laser crystallization method which can heighten an efficiency of substrate processing as compared to a conventional one and also heighten mobility of a semiconductor film is provided. It is an irradiation method of a laser beam in ... | 11/14/2006 |
| 7133254 | Magnetic recording head with heating device A magnetic recording disk drive has a magnetic recording head that includes first and second separating layers, and a heater formed between the first and second separating layers. The heater has a dimension such a thermal protrusion is induced in the recording head ... | 11/07/2006 |
| 7133253 | Pole tip with sides flared at media-facing surface A thin film electromagnetic head has an inductive transducer with a ferromagnetic pole layer terminating adjacent a media-facing surface at a pole tip surface. The pole layer has side surfaces each having an end region that meets the pole tip surface, the end region... | 11/07/2006 |
| 7133261 | Tape head having a support plate with contoured surface A tape recording head is provided comprising a support plate having a contoured surface with an opening in the contoured surface which allows head chips to protrude far enough to allow proper head tape contact for recording. The support plate is fixed on a coarse ac... | 11/07/2006 |
| 7133252 | Single pole type recording head with trailing side tapered edges A magnetic head for perpendicular recording without writing from the lateral sides of a main pole and without erasing data on adjacent tracks. A magnetic disk storage apparatus using the magnetic head. The lateral side of the main pole of a magnetic head for perpend... | 11/07/2006 |
| 7131186 | Method of manufacturing combination type thin film magnetic head On a surface of a bottom pole, a write gap film and first magnetic material film having a high saturation magnetic flux density are formed, and the first magnetic material film is etched to remain a portion extending from an air bearing surface to a throat height ze... | 11/07/2006 |
| 7133255 | Magnetic head having magnetic pole with lengthened neck pole tip and coplanar yoke, and method of fabrication thereof A magnetic head having a magnetic pole that includes a pole tip and a yoke. The pole tip includes an elongated neck, having an anchor piece on one end and a yoke interconnection piece on the other end. The air bearing surface of the head is located approximately at ... | 11/07/2006 |
| 7133263 | Magnetoresistive sensor having a self aligned lead overlay structure and method of fabrication thereof A self aligned magnetoresistive sensor having a narrow and well defined track width and method of manufacture thereof. ... | 11/07/2006 |
| 7129177 | Write head fabrication by inverting order of process steps During fabrication of a write head via holes are first opened in a gap layer, followed by formation of seed layers instead of the other way around. Moreover a first seed layer is formed, and without the first seed layer being used a second seed layer is formed. The ... | 10/31/2006 |
| 7130153 | Stitched write head with staircase P2 defined throat height A magnetic write head assembly has a head surface and a track width at the head surface wherein the head surface forms a first vertical plane and wherein the head assembly includes first and second pole pieces, a write gap located between the first and second pole p... | 10/31/2006 |
| 7127801 | Method for shaping pole pieces of magnetic heads by chemical mechanical polishing A thin film magnetic head that includes an improved P2 pole tip/yoke interface. The process for forming the P2 pole tip/yoke interface includes a CMP polishing step that is performed on the surface of the wafer subsequent to the plating of the P2 | 10/31/2006 |
| 7127800 | Narrow write head pole tip fabricated by sidewall processing The magnetic head includes a P2 pole tip in which the P2 pole tip material is electroplated upon a sidewall of the P2 pole tip photolithographic trench. To accomplish this, a block of material is deposited upon a write gap layer, such that a gen... | 10/31/2006 |
| 7130152 | High track density magnetic recording head Closer spacing of elements for writing multiple tracks onto a magnetic media increases the areal density of stored information. A thin film multiple track recording head includes recording gaps in a plane parallel with the head substrate. This configuration allows f... | 10/31/2006 |
| 7124498 | Method for manufacturing magnetic head A non-magnetic material layer which is formed with a taper region of which the film thickness is gradually reduced over the top surface and the side of an upper core layer and the side of the gap layer is formed by cutting the gap layer and the upper core layer on a... | 10/24/2006 |
| 7126794 | Thin film magnetic head including heat dissipation, 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 ... | 10/24/2006 |
| 7126788 | Trailing edge recording magnetic head with reversed double bias coil and deflection pole for perpendicular recording with a non-perpendicular write field A magnetic head for writing information on perpendicular media has a write pole tip, a return pole tip and a deflection pole tip is disclosed. The return pole tip has a media-facing area at least two orders of magnitude greater than that of the write pole tip, and t... | 10/24/2006 |
| 7126790 | Magnetic head for perpendicular recording with magnetic loop providing non-perpendicular write field A magnetic head for writing information on perpendicular media has a write pole tip and a return pole tip with a media-facing area at least two orders of magnitude greater than that of the write pole tip, the return pole tip is spaced from a trailing corner of the w... | 10/24/2006 |
| 7126789 | Low DC coil resistance planar writer Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC resistance of the coil. In the present invention, CMP is terminated as soo... | 10/24/2006 |
| 7123447 | Patterned multi-material basecoat to reduce thermal protrusion To reduce thermal pole-tip protrusion and recession, a magnetic head includes a multi-material basecoat. The magnetic head has an air bearing surface and a back surface opposite the air bearing surface. The magnetic head includes a substrate and the basecoat positio... | 10/17/2006 |
| 7123448 | Extended alumina basecoat advanced air bearing slider The present invention is an air bearing slider comprising a transducer for communicating with a disc; a composite slider body with a front portion composed of a first material and a rear portion composed of a second material; an air bearing surface defined on a disc... | 10/17/2006 |
| 7120989 | Process of manufacturing a perpendicular magnetic pole structure For PMR (Perpendicular Magnetic Recording) design, one of the major technology problems is the use of CMP to fabricate the pole structure. If the device is under-polished there is a danger of leaving behind a magnetic shorting layer while if it is over-polished ther... | 10/17/2006 |
| 7120990 | Method for manufacturing thin film magnetic head with improved performance A method of manufacturing a thin film magnetic head. The method includes forming, near a pole portion: a first magnetic layer supported by a base substrate; a first insulating layer on the first magnetic layer with an end edge which forms a reference position for an... | 10/17/2006 |
| 7123442 | Thin-film magnetic head and manufacturing method of thin-film magnetic head A thin-film magnetic head has an inductive write head element including an upper core layer with a front end section magnetically coupling with an upper magnetic pole, a lower core layer with a front end section magnetically coupling with a lower magnetic pole, a co... | 10/17/2006 |
| 7123443 | Self-aligned void filling for mushroomed plating The present invention includes an overplated component which includes an enlarged mushroom head having outer portions which overhang a hard baked resist layer. The device is ultimately encapsulated such that no voids and/or redeposition problems exist under the over... | 10/17/2006 |
| 7120988 | Method for forming a write head having air bearing surface (ABS) A method and materials to fabricate a trailing shield write pole that resolve the problems of controlling the write gap and preventing damages to the write gap or pole during fabrication of the subsequent structure. This process also introduces a CMP assisted lift-o... | 10/17/2006 |
| 7119990 | Storage device including a center tapped write transducer A head for use in a drive includes a heating element capable of generating heat sufficient to cause the head to have a shape that is similar or identical to the shape that the head has when performing an operation (e.g. writing) on a recording medium in the drive. T... | 10/10/2006 |
| 7119976 | Planar servo format verifier head A planar servo verifier head is provided comprising a plurality of magnetic head elements optimized for the readback process. The plurality of magnetic head elements are fabricated in a planar two-dimensional array in which individual elements can be used to read se... | 10/10/2006 |
| 7119987 | Thin-film magnetic head, a head gimbal assembly, and a hard disk drive A thin-film magnetic head comprises first and second magnetic pole groups, magnetically connected to each other, having respective magnetic pole parts opposing each other on a side of a medium-opposing surface; a recording gap layer formed between the magnetic pole ... | 10/10/2006 |
| 7119989 | Thin-film magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive A thin-film magnetic head comprises first and second magnetic pole groups, magnetically connected to each other, having respective magnetic pole parts opposing each other on a side of a medium-opposing surface; a recording gap layer formed between the magnetic pole ... | 10/10/2006 |
| 7116516 | Magnetic head having write head with helical coil and method for fabrication thereof The present invention is a magnetic head having a helical induction coil and includes hard disk drive devices that utilize the magnetic head. The helical coil is fabricated around a magnetic pole yoke in a series of process steps that include a reactive ion etch (RI... | 10/03/2006 |
| 7116518 | Short yoke length planar writer with low DC coil resistance Present processes used for planarizing a cavity filled with a coil and hard baked photoresist require that a significant amount of the thickness of the coils be removed. This increases the DC resistance of the coil. In the present invention a layer of alumina is dep... | 10/03/2006 |
