Class / Patent application number | Description | Number of patent applications / Date published |
029603070 |
Fabricating head structure or component thereof
| 74 |
029603030 |
Making disc drive
| 19 |
029603020 |
Including dissassembly step | 4 |
20090077792 | Method for manufacturing head gimbal assembly and apparatus for detaching head slider joined to mounting plate of suspension - Embodiments of the present invention help to prevent deformation of a gimbal in detaching a head slider from a suspension. In an embodiment of the present invention, after a head slider has been mounted on a suspension, a test on the assembly is conducted. If a defect head slider is found in the test, the head slider is detached from the suspension. The head slider is discarded but the suspension is reused and a new head slider is mounted on the suspension. In detaching the head slider, a pin inserted in a through-hole on the center line of a gimbal tongue latches the gimbal tongue. | 03-26-2009 |
20100095516 | METHOD OF MANUFACTURING A DISK DRIVE USING A MEDIA COVER - A method of manufacturing a disk drive is disclosed. After installing at least one disk into a base, a media cover is coupled to the base, wherein the media cover covers at least a portion of the disk. After coupling the media cover to the base, a head coupled to an actuator arm and a voice coil motor for rotating the actuator arm about a pivot is installed into the base. After installing into the base the head coupled to the actuator arm and the voice coil motor, the media cover is removed from the base. After removing the media cover from the base, a HDA cover is coupled to the base to form a head disk assembly (HDA). | 04-22-2010 |
20130291376 | METHOD OF REMOVING SLIDER FROM FLEXURE WITHOUT LARGE DISPLACEMENT OF THE SLIDER - A method of surely removing a read/write slider from a flexure without large displacement of the slider, the slider attached to the flexure of the head suspension through an adhesive, comprises heating the slider so that the adhesive is heated through an adhered surface of the slider being in contact with the adhesive; and applying ultrasonic vibration to the slider so that the adhered surface of the slider vibrates at ultrasonic frequency with respect to the adhesive. | 11-07-2013 |
20160042751 | DE-SWAGE MACHINE FOR REMOVAL OF A HEAD FROM A HEAD STACK ASSEMBLY AND METHOD OF USING THE SAME - A de-swage machine for removal of a head of a head stack assembly including a tooling unit configured to receive a head stack assembly comprising a plurality of heads and an indicia, a blade module configured to remove a head from the head stack assembly, an indicia reader configured to read the indicia, and a controller. The controller is configured to select and remove a head from the head stack assembly by at least reading the indicia using the indicia reader, transmitting the indicia to a database, receiving head stack assembly information corresponding to the indicia from the database, selecting the head for removal based on the head stack assembly information, and removing the selected head using the blade module. The blade module can also include a force sensor, and the de-swage machine can also include an imaging unit. | 02-11-2016 |
029603040 |
Mounting preformed head/core onto other structure | 3 |
20080307636 | METHOD OF MANUFACTURING HEAD ACTUATOR ASSEMBLY AND METHOD OF MANUFACTURING DISK DEVICE - A head actuator assembly of a disk device has a suspension which supports a head, an arm which supports the suspension and is rotatably supported by a bearing portion, signal wires which extend on the suspension and the arm and are connected electrically to the head, and a board unit. In manufacture, the signal wires are mounted on the suspension and the arm, and a connecting end portion of the board unit is connected to the signal wires mounted on the suspension and the arm. Thereafter, the head is mounted on the suspension and connected electrically to the signal wires. | 12-18-2008 |
20110072644 | METHOD AND SYSTEM FOR MANUFACTURING A HARD-DISK DRIVE - A method for manufacturing a hard-disk drive (HDD). The method for manufacturing a HDD includes writing servo tracks, and writing servo tracks into the HDD using a calculated control target value of a calculated servo pattern overlap amount. Writing servo tracks includes a first, second, third and fourth operation. The first operation includes: producing a first control equation for obtaining a servo pattern overlap amount; and, converting a root-mean-square error (RMSE) into a probability distribution. The second operation includes calculating a second control target value that results in an increased product yield, from the RMSE probability distribution. The third operation includes producing a second control equation for obtaining a calculated servo pattern overlap amount, by assigning the second control target value into the first control equation. The fourth operation includes calculating the calculated control target value using the second control equation and the magnetic-recording-head characteristic value. | 03-31-2011 |
20130025117 | METHOD FOR MANUFACTURING A ROTATING DEVICE - A rotating device comprises a hub on which a magnetic recording disk is to be mounted and a base rotatably supporting the hub. At least one of the base and the hub is an item of manufacture. A method for manufacturing the rotating device comprises the steps of forming the item of manufacture, immersing the formed item of manufacture in an aqueous solution, the solute of which being a surfactant and the temperature of which being higher than the melting point of heptacosane, taking out the item of manufacture from the aqueous solution and immersing the item of manufacture in a liquid that can be regarded as pure water, taking out the item of manufacture from the liquid and drying the item of manufacture, and assembling the rotating device using the dried item of manufacture. | 01-31-2013 |
Entries |
Document | Title | Date |
20080244896 | ADDITIVE GAP PROCESS TO DEFINE TRAILING AND SIDE SHIELD GAP FOR A PERPENDICULAR WRITE HEAD - A method for manufacturing a magnetic write head for perpendicular magnetic recording. The method includes the formation of a write pole over a substrate. A non-magnetic side gap layer is deposited and an ion milling is used to remove a portion of the substrate to lower the floor of the substrate. A sacrificial fill layer can then be deposited. A chemical mechanical polishing process can be used to remove the mask structure remaining as a remnant of the formation of the write pole, and then the sacrificial fill layer can be removed. A non-magnetic, electrically conductive material can be deposited to form a trailing gap, and a magnetic material can then be deposited to form a wrap around trailing shield. | 10-09-2008 |
20080256787 | Fixturing a head spindle assembly with a contracting collet - An apparatus and associated method is provided for precisely positioning a datum surface of a component. The apparatus has a housing defining a tooling datum surface. A collet is supported by the housing, and is thereby selectively operable between an expanded mode and a retracted mode. In the expanded mode, a clearing disengagement is defined with the component. In the retracted mode, a contacting engagement is defined with the component as well as a simultaneous longitudinal force that is transferred by the contacting engagement to the component capable of pressingly engaging the datum surfaces together. The apparatus further has a bias member urging the collet to the retracted mode. | 10-23-2008 |
20080313885 | SHIELD FABRICATION OF MAGNETIC WRITE HEADS - Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure. | 12-25-2008 |
20090025205 | Method and apparatus for manufacturing a head gimbal assembly - Embodiments of the present invention help to decrease the amount of inactive gas necessary for reflow to interconnect connection terminals of a head slider and a suspension. In an embodiment of the present invention, inactive gas is blown from a nozzle of a reflow apparatus toward interconnection joints of a head slider and a suspension. The head slider is bonded onto a gimbal tongue. The nozzle comprises a duct through which the inactive gas passes and a porous member fitted in an ejection outlet of the tube. Placing the porous member close to the head slider achieves effective reduction of oxygen concentration around solder balls. | 01-29-2009 |
20090158582 | Method of manufacturing a magnetic head for perpendicular magnetic recording - A method of manufacturing a magnetic head is disclosed. The steps of manufacture include the formation of an underlying layer made of a material whose etching rate of ion beam etching is higher than that of a magnetic alloy used to make a pole layer, and the formation of a magnetic layer, which includes a portion of the magnetic layer to be etched that will be formed into a track width defining portion by making its side surfaces sloped through etching. The magnetic layer is formed such that the portion to be etched is disposed on the underlying layer. The side surfaces of the portion to be etched by the ion beam etching are etched so that the magnetic layer is formed into the pole layer and so that the end face of the track width defining portion located in the medium facing surface has a width that decreases with decreasing distance from the substrate. | 06-25-2009 |
20090217510 | METHOD OF MANUFACTURING HARD DISK RECORDING DEVICE USING PATTERNED MEDIUM - A high yield in a manufacture of an HDD having a high recording density and using a patterned medium by a trench-like or a dot-like pattern is realized. In this HDD manufacturing method, a magnetic field size (writing and reading) of a head in a head manufacturing process is measured in a head unit inspection process. According to the result of the measurement, the head is classified into a plurality of groups in a head classifying process. In a patterned medium manufacturing process, a plurality of types of the patterned media which are designed so as to correspond to the classified head groups are manufactured. In an HDD assembly process, the HDD is manufactured by combining the plurality of head groups and the plurality of patterned media following a predetermined rule. | 09-03-2009 |
20090241322 | Manufacturing method of base and Manufacturing method of disk drive device - Embodiments of the present invention help to effectively suppress vibration of the disk in a Hard Disk Drive (HDD) with low density gas sealed therein, and securely prevent leakage of the low density gas from the base. In an embodiment, helium gas is sealed in a hermetically sealed enclosure of an HDD, and a shroud is formed integrally with a base. In manufacturing the base, a magnetic disk facing surface of the shroud is shaped by cutting after die-casting. This accomplishes a small and precise size of the gap between the magnetic disk facing surface and the circumferential edge of the disk. Cutting the shroud formed independently from the exterior walls, which ensure the hermeticity with the shroud, suppresses the vibration of the magnetic disk and eliminates the necessity of cutting of the inner surfaces of the exterior walls for the purpose of suppression of the vibration to reduce the risk of helium leakage. | 10-01-2009 |
20100005648 | Method of manufacturing head suspension, apparatus for manufacturing head suspension, and head suspension - A method of manufacturing a head suspension includes a punching process, a positioning process, and an affixing process. An objective part on the head suspension to which a damper | 01-14-2010 |
20110179634 | METHOD OF MAKING A TRANSDUCER WITH A CONDUCTIVE MAGNETIC LAYER - A transducer includes a first layer that is selectively deposited in a contact region to form a core, and selectively deposited in a transducer region to form a first element of the transducer. The transducer includes an electrically conductive magnetic deposit. The electrically conductive magnetic deposit forms a sidewall on the core. The electrically conductive magnetic deposit forms a second element of the transducer in the transducer region. The second element of the transducer has a planarized surface that is coplanar with a planarized surface of the sidewall. | 07-28-2011 |
20120036706 | Row bar for forming sliders and method of manufacturing slider - A row bar for forming sliders has a row of slider forming portions, each slider forming portion having a slider to be cut from the row bar and a medial region adjacent the slider, each medial region having a first guide pad disposed thereon; wherein each slider has: a slider body; a magnetic writer and a magnetic reader disposed on the slider body; a second guide pad disposed on the slider body; two electrical lapping guides disposed on the slider body and electrically connecting to the first guide pad and the second guide pad respectively; a row of bonding pads formed on the slider body and electrically connecting to the magnetic reader and the magnetic writer; and a grounding pad disposed on the slider body and electrically connecting to the first guide pad and the second guide pad. The invention also discloses a method of manufacturing the slider. | 02-16-2012 |
20120066896 | METHOD OF PRODUCING A PERPENDICULAR MAGNETIC DISC - An object of the invention is to achieve thinning while maintaining a function required for an auxiliary recording layer, thereby achieving improvement of SNR. | 03-22-2012 |
20120084969 | METHOD OF MANUFACTURING THERMAL ASSISTED MAGNETIC WRITE HEAD - A method of manufacturing a thermally-assisted magnetic write head is provided. The method includes steps of: forming a laminate structure including the waveguide; the plasmon generator, and the magnetic pole in order; performing a first polishing process to planarize an end surface of the laminate structure; performing a first etching process to remove impurity attached on the end surface of the laminate structure, and to allow the plasmon generator to be recessed from the waveguide and the magnetic pole, thereby forming a recessed region on the end surface of the laminate structure; forming a protection layer on the end surface of the laminate structure such that at least the recessed region is filled; and performing a second polishing process on the end surface of the laminate structure formed with the protection layer until the plasmon generator is exposed, thereby completing the air bearing surface. | 04-12-2012 |
20120090162 | METHOD FOR MANUFACTURING HEAD INCLUDING LIGHT SOURCE UNIT FOR THERMAL ASSIST - Provided is a method for manufacturing a thermally-assisted magnetic recording head including a light source unit with a light source and a slider with an optical system. The method comprises steps of: adhering by suction the light source unit with a back holding jig; moving the back holding jig, then aligning a light-emission center of the light source with a light-receiving end surface of the optical system in directions within a slider back surface of the slider; bringing the light source unit into contact with the slider back surface, with a suction surface of the back holding jig tilted from the normal to the slider back surface; applying a load to a load application surface of the unit substrate by a loading means to bring a joining surface of the light source unit into conformity with the slider back surface; and bonding the light source unit and the slider. This method can improve the conformity, thereby achieving adequately strong junction and adequately high accuracy in position. | 04-19-2012 |
20120137507 | Write Head Having Recessed Magnetic Material In Gap Region - As track densities increase, it becomes increasingly important, while writing in a given track, not to inadvertently write data in adjoining tracks. This problem has been overcome by limiting the width of material in the ABS plane to what it is at the write gap. The part of the lower pole that is wider than this is recessed back away from the ABS, thereby greatly reducing its magnetic influence on adjacent tracks. Four different embodiments of write heads that incorporate this notion are described together with a description of a general process for their manufacture. | 06-07-2012 |
20120151752 | METHOD FOR DETERMINING A CRITICAL DIMENSION AT A PLANE OF INTEREST FROM A MEASUREMENT TAKEN AT A TEST PLANE - A method for determining a critical dimension of a structure along a plane of interest from a measurement along a test plane that is not necessarily located at the plane of interest. The method involves slicing a structure along a test plane and measuring a marker feature in this test plane. A determination of a critical dimension of a feature at the plane of interest is then determined based on the measurement of the marker feature measurement at the test plane. This testing methodology can be useful, for example in the measurement of a critical dimension of a write pole at an air bearing surface plane form a measurement of a test feature at a plane that is not necessarily located at the air bearing surface plane. | 06-21-2012 |
20120240390 | METHOD OF MANUFACTURING A MAGNETIC HEAD INCLUDING SHIELD LAYERS WHICH SURROUND A MR ELEMENT - A method of manufacturing a magnetic head that includes a magneto resistance effect (MR) element of which an electrical resistance changes according to an external magnetic field and shield layers surrounding the MR element, and that reads information of a magnetic recording medium is provided. The manufacturing method includes: a first step of forming a multilayer film including a plurality of layers configuring the MR element on a first shield layer; a second step of removing unnecessary portions of the multilayer film positioned on both sides so as to configure the MR element; a third step of forming an insulating layer on a surface exposed by removing the unnecessary portions; a fourth step of forming a soft magnetic layer covering the MR element in an integrated manner at once on both sides of the MR element and on the MR element so as to configure a second shield layer including the soft magnetic layer; and a fifth step of forming an anisotropy application layer on the second shield layer, the anisotropy application layer providing exchange anisotropy to the soft magnetic layer so as to magnetize the soft magnetic layer in a predetermined direction. | 09-27-2012 |
20120260496 | METHODS FOR FABRICATING MAGNETIC TRANSDUCERS USING POST-DEPOSITION TILTING - In one general embodiment, a method is provided for fabricating magnetic structures using post-deposition tilting. A thin film magnetic transducer structure is formed on a substantially planar portion of a substrate such that a plane of deposition of the thin film transducer structure is substantially parallel to a plane of the substrate. Additionally, the thin film transducer structure is caused to tilt at an angle relative to the plane of the substrate. The thin film transducer is fixed at the angle after being tilted. | 10-18-2012 |
20130019465 | SELF-CONTAINED MAGNETIC TAPE DRIVE AND COMBINED MULTI-PART TAPE SYSTEM - Magnetic tape systems, magnetic tape and reel systems, magnetic tape drives and methods of manufacturing the systems and drives comprise, for the magnetic tape system, two lengths of magnetic tape of substantially equal width dimension; and a cleaning tape positioned between and joining the two lengths of magnetic tape, forming a combined multi-part tape having the cleaning tape contained between the two lengths of magnetic tape. In the tape drive, the tape, two reels, each reel supporting at least a distal end of the combined multi-part tape, and a magnetic tape head assembly are contained in a common enclosure, such that the magnetic tape drive is self-contained. Manufacturability is enhanced by having a very long combined multi-part tape made from two lengths of magnetic tape joined together by a cleaning tape. | 01-24-2013 |
20130019466 | IN-SITU ANNEALING OF A TMR SENSOR - A method in one embodiment includes applying a current to a lead of a tunneling magnetoresistance sensor for inducing joule heating of the lead or a heating layer, the level of joule heating being sufficient to anneal a magnetic layer of the sensor; and maintaining the current at the level for an amount of time sufficient to anneal the tunneling magnetoresistive (TMR) sensor. Additional systems and methods are also presented. | 01-24-2013 |
20130055557 | METHOD OF POSITIONING HEAD ATTACHING PART OF HEAD SUSPENSION, METHOD OF MANUFACTURING HALF-FINISHED HEAD SUSPENSION, AND HALF-FINISHED HEAD SUSPENSION - A positioning method positions a flexure whose front end side is joined to an outside frame with respect to a load beam, keeps the positioned state of the flexure and load beam, plastically deforms the outside frame to bend the front end side of the flexure so that the position of a tongue of the flexure is adjusted to the position of a dimple of the load beam, and joins the flexure and load beam to each other to keep the position adjusted state of the tongue. | 03-07-2013 |
20130086799 | METHOD OF MAKING MAGNETICALLY SHIELDED WRITE TRANSDUCERS - A method according to one embodiment includes forming a lower shield of a shield structure; forming a portion of a magnetic yoke for each of at least two write transducers above the lower shield of the shield structure; and forming an upper shield of the shield structure above the portions of the yokes of each of two of the at least two write transducers, the shields being formed of a magnetically permeable material, wherein the upper and lower shields are magnetically connected. | 04-11-2013 |
20130219698 | METHOD OF MANUFACTURING THERMALLY-ASSISTED MAGNETIC RECORDING HEAD - A method of manufacturing a thermally-assisted magnetic recording head includes: providing a bar and a plurality of light source units, the bar including a plurality of thermally-assisted magnetic recording head sections arranged in a first direction, and each of the light source units including a substrate and a light source; and bonding a second surface of the substrate to the bar with an adhesive layer in between, where the plurality of light source units are so aligned to the respective thermally-assisted magnetic recording head sections on the bar, as to allow a first surface of the substrate, which supports the light source, to be parallel to the first direction, the bonding allowing the substrates of the light source units to be irradiated with a first laser beam and allowing the bar to be irradiated with a second laser beam, to thereby allow the adhesive layer to be melted. | 08-29-2013 |
20140033516 | MAGNETIC RANDOM ACCESS MEMORY WITH SYNTHETIC ANTIFERROMAGNETIC STORAGE LAYERS - A method for fabricating a synthetic antiferromagnetic device, includes depositing a reference layer on a first tantalum layer and including depositing a first cobalt iron boron layer, depositing a second cobalt iron boron layer on the first cobalt iron boron layer, depositing a second Ta layer on the second cobalt iron boron layer, depositing a magnesium oxide spacer layer on the reference layer and depositing a cap layer on the magnesium oxide spacer layer. | 02-06-2014 |
20140059842 | METHOD OF FORMING MAGNETIC RECORDING HEAD HAVING PROTECTED READER SENSORS AND NEAR ZERO RECESSION WRITER POLES - A method according to one embodiment includes applying a coating to a media facing side of a module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; wherein the coating forms at least a portion of a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure. | 03-06-2014 |
20150020379 | PROCESS TO INHIBIT SLIDER CONTAMINATION DURING PROCESSING - Methods for forming a slider for a disc drive. One method includes forming a plurality of sliders on a wafer, applying a self-assembled monolayer coating on the plurality of sliders, and cutting the plurality of sliders into a plurality of individual sliders. Another method includes forming a plurality of sliders on a wafer, applying a low surface energy coating on the plurality of sliders, and cutting the plurality of sliders into a plurality of individual sliders. | 01-22-2015 |
20150040380 | SLIDER EDGE FEATURES - A slider comprising a body having an air bearing surface (ABS), wherein the ABS extends between a leading edge and a trailing edge of the body. The slider comprises a transducer supported by the body and positioned near the trailing edge, wherein the transducer comprises a pole tip partially extending from the body. The slider comprises a surface defined in the body and forming the trailing edge, wherein the surface comprises a plurality of segments. A first segment of the plurality of segments extends from the ABS and is offset from a portion of the pole tip recessed within the body. The first segment is offset from the pole tip portion by a lesser extent than any other of the plurality of segments. | 02-12-2015 |
20160099013 | METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY - A method for making an interferometric taper waveguide (I-TWG) with high critical dimension uniformity and small line edge roughness for a heat assisted magnetic recording (HAMR) head, wherein the method includes creating an I-TWG film stack with two hard mask layers on top of an I-TWG core layer sandwiched between two cladding layers, defining a photoresist pattern over the I-TWG film stack using deep ultraviolet lithography, transferring the pattern to the first hard mask layer using reactive ion etching (RIE), forming a temporary I-TWG pattern on the second hard mask layer using RIE, transferring the temporary pattern to the I-TWG core using RIE, refilling the cladding layer, and planarizing using chemical mechanical planarization (CMP). | 04-07-2016 |
20180025744 | ROW BAR AND WAFER FOR FORMING MAGNETIC HEADS | 01-25-2018 |