Patent application number | Description | Published |
20080204916 | THERMALLY ASSISTED MAGNETIC RECORDING HEAD AND MAGNETIC RECORDING APPARATUS - A second waveguide is formed near a first waveguide for guiding light to the vicinity of a main pole of a thermally assisted magnetic recording head, and a portion of light propagated through the waveguide | 08-28-2008 |
20090185459 | HEAD GIMBAL ASSEMBLY AND INFORMATION RECORDING APPARATUS - When a semiconductor laser is arranged outside a slider and a light is to be guided to the slider through a waveguide, the following problems will be solved: the stability of the flying slider is deteriorated due to a stress from the waveguide; and when an actuator is arranged near the flying slider, the motions of the slider are hindered by the waveguide. A waveguide for guiding a light to a light irradiating unit inside a slider, which floats over a medium and has the light irradiating unit for irradiating a light to the medium; and a waveguide for propagating a light from the light source to the waveguide inside the slider, are included. The two waveguides are not in contact with each other, and a relative portion between the two waveguides is movable. | 07-23-2009 |
20090231747 | THERMALLY ASSISTED MAGNETIC RECORDING HEAD AND METHOD OF MANUFACTURING THE SAME - In order to prevent deterioration of floating characteristics of a slider due to deformation of a slider floating surface by thermal expansion of a coil, the followings are performed. A recessed portion is formed in a part of the slider, and a device for generating an optical near-field and the coil for generating a magnetic field are formed in the recessed portion. The optical near-field generation device is formed on a surface facing a recording medium, and the magnetic field application coil is formed on an upper surface of the recessed portion. The optical near-field generation device and the magnetic field application coil are respectively exposed to the surface. | 09-17-2009 |
20100165514 | HEAD SUPPORTING MECHANISM - A head supporting mechanism equipped with a waveguide is provided by which stiffness of the waveguide does not give a large influence to flying-heights and attitudes of a slider. In the head supporting mechanism, the waveguide provided on a suspension is arranged in such a manner that a portion of the waveguide is bent in either an in-plane direction or an out-plane direction of the suspension. | 07-01-2010 |
20110038235 | Thermally Assisted Magnetic Recording Head And Magnetic Recording Apparatus - A thermally assisted magnetic recording head includes a flying slider, a magnetic field generation device mounted on the flying slider, a first waveguide disposed near the magnetic field generation device for guiding incident light from a top surface of the flying slider on a side of the flying slider toward an air bearing bottom surface of the flying slider, an optical near-field generator disposed at an emission end of the first waveguide, a second waveguide which is separate from the first waveguide and which is spaced from and coupled to the first waveguide at a distance of no greater than a light wavelength, and a first optical detector for detecting the intensity of light propagating in the second waveguide. The first waveguide and the second waveguide are disposed so as to extend in a direction substantially perpendicular to the air bearing bottom surface of the flying slider. | 02-17-2011 |
20110090770 | THERMAL-ASSISTED-MAGNETIC-RECORDING HEAD AND MAGNETIC RECORDING SYSTEM USING THE THERMAL-ASSISTED-MAGNETIC-RECORING HEAD - Provided is a thermal-assisted-magnetic-recording head capable of directing, to a magnetic recording medium, light in which the spot size is reduced to submicron order with high total optical propagation efficiency. A light coupling unit that guides light emitted from the light source into a magnetic head and a high-refractive-index core that couples with the light guided by the light coupling unit to lead the light to an air bearing surface are arranged in the magnetic head. The light coupling unit includes a plurality of thin-film-like cores that are separated from each other by a clad material. An upper part of the high-refractive-index core is placed between two thin-film-like cores. | 04-21-2011 |
20110096639 | HEAD FOR THERMAL ASSISTED MAGNETIC RECORDING DEVICE, AND THERMAL ASSISTED MAGNETIC RECORDING DEVICE - The present invention suppresses temperature rise of an optical near-field generator while increasing optical near-field intensity in a thermally assisted magnetic recording head using a conductive scatterer as the optical near-field generator. The present invention uses a conductive scatterer having a cross-sectional shape in which its width is gradually reduced toward an apex where an optical near-field is generated, and also has a shape in which its width is reduced gradually or in a stepwise fashion toward the apex where the optical near-field is generated in a traveling direction of incident light. | 04-28-2011 |
20110128828 | THERMALLY ASSISTED MAGNETIC RECORDING HEAD - A thermally assisted magnetic recording head is formed of a slider and a magnetic head. The magnetic head includes a main pole, a reader, a coil, a near-field transducer, and a waveguide. A metal film with high thermal conductivity is formed at both sides of the near-field transducer in a width direction of the magnetic head. The use of the metal film as a radiator plate ensures to prevent the temperature of the near-field transducer from becoming locally high. | 06-02-2011 |
20110149698 | THERMALLY ASSISTED MAGNETIC RECORDING HEAD AND HEAD ASSEMBLY - In a thermally assisted magnetic recording head ( | 06-23-2011 |
20110170381 | HEAD FOR THERMAL ASSISTED MAGNETIC RECORDING DEVICE, AND THERMAL ASSISTED MAGNETIC RECORDING DEVICE - An optical near-field generating efficiency of an optical near-field generating element is improved and a temperature rise of the element is suppressed. An optical near-field is generated using a conductive structure having a cross-sectional shape whose width in a direction perpendicular to a polarization direction of incident light transmitted through a waveguide gradually becomes shorter toward a vertex where an optical near-field is generated and having a shape whose width gradually, or in stages, becomes smaller in a traveling direction of the incident light toward the vertex where an optical near-field is generated. The waveguide is arranged beside the conductive structure and an optical near-field is generated via a surface plasmon generated on a lateral face of the conductive structure. | 07-14-2011 |
20110216635 | HEAD FOR THERMAL ASSISTED MAGNETIC RECORDING DEVICE, AND THERMAL ASSISTED MAGNETIC RECORDING DEVICE - In a head for thermal assisted magnetic recording device, a semiconductor laser is mounted so that the total height of the head does not become larger and light power fluctuation due to wavelength fluctuation occurs less frequently. In addition, the rise in temperature of the mounted semiconductor laser is suppressed. A semiconductor laser is placed on a side surface which is different from surfaces on an inflow end side and a trailing side, of four side surfaces of a floating slider. An entrance of a waveguide is placed on the side surface of the floating slider, to thereby cause emitted light from the semiconductor laser to directly enter the waveguide. A curved line part or a reflective mirror is formed in the middle of the waveguide so that the light which has entered the waveguide travels toward an optical near-field generating element. | 09-08-2011 |
20130322221 | Heat Assisted Magnetic Recording Head Gimbal Assembly and Hard Disk Drive Using Same - Provided is a structure of a heat assisted magnetic recording head gimbal assembly that allows common inexpensive TE-mode LDs to be utilized. The heat assisted magnetic recording head gimbal assembly comprises: a light source unit having a light emitting element mounted on a parabolic solid submount; a heat assisted magnetic recording head comprising a magnetic recording element, a read element, a near field transducer, and a waveguide for guiding light from the light emitting element into the near field transducer; a slider including the heat assisted magnetic recording head and which flies above a disk; and a suspension for supporting the slider. The light emitting element of the light source unit is an edge-emitting LD and the light source unit is arranged on the opposite side of an bearing surface of the slider such that the light emitting surface of the light emitting element faces the slider, apertures are created in the suspension, and the slider is connected to the suspension in a way that a part of the light source unit penetrates through the apertures of the suspension. | 12-05-2013 |
Patent application number | Description | Published |
20090145209 | PROBE APPARATUS FOR MEASURING AN ELECTRON STATE ON A SAMPLE SURFACE - In a probe apparatus that intermittently irradiates a sample with excitation light to observe the sample while subjecting a cantilever including a probe arranged to face a surface of the sample to self-excited vibration at a predetermined frequency, the sample is irradiated with the excitation light at a predetermined timing when a distance between the probe and the sample is not greater than a predetermined distance. | 06-11-2009 |
20100233384 | IMMOBILIZATION OF METAL NANOPARTICLES - A solution containing polymer-bound metal nanoparticles is deposited onto a substrate, at least the surface of which is insulating, to form a pattern, the substrate is dried, and then the pattern is subjected to plasma exposure. | 09-16-2010 |
20110021381 | Method for immobilizing self-organizing material or fine particle on substrate, and substrate manufactured by using such method - A method for immobilizing a self-organizing material or fine particles on a substrate, and a substrate whereupon the self-organizing material or the fine particles are immobilized. More specifically, the method for immobilizing the fine particles including a nucleic acid (for instance, DNA or RNA) or a metal oxide on the substrate, and the substrate whereupon the nucleic acid (for example, DNA or RNA) or the metal oxide is immobilized. | 01-27-2011 |
Patent application number | Description | Published |
20100315747 | MAGNETIC HEAD AND DISK DRIVE PROVIDED WITH THE SAME - According to an embodiment, a magnetic head for perpendicular recording, includes a slider including a facing surface opposed to a recording medium, and a head portion on the slider and configured to perform information processing for the recording medium. The head portion includes a main pole configured to apply a perpendicular recording magnetic field to the recording medium, a recording coil configured to excite the main pole, a write shield pole opposing the main pole across a write gap, side shields arranged individually on opposite sides of the main pole in a track width direction and magnetically isolated from the main pole, and low-flux-density layers formed of a material having a saturation magnetic flux density lower than that of the main pole, located between the main pole and the side shields, and configured to regulate magnetic fluxes flowing from the main pole to the side shields. | 12-16-2010 |
20120134046 | MAGNETIC HEAD AND DISK DRIVE WITH THE SAME - According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field, a return pole opposed to a trailing side of the main pole across a write gap and configured to return magnetic flux from the main pole, a coil configured to excite magnetic flux in the main pole, a spin-torque oscillator located between respective facing surfaces of the return pole and an end portion of the main pole on the recording-medium side and configured to produce a high-frequency magnetic field, a current source configured to apply current to the spin-torque oscillator through the return and main poles, and a nonmagnetic layer provided in at least one of the poles and extending from a facing surface of the at least one of the poles, which faces the spin-torque oscillator, in a direction across the facing surface. | 05-31-2012 |
20120182644 | RECORDING HEAD AND DISK DRIVE WITH THE SAME - According to one embodiment, a recording head includes a main pole, a trailing core, a first coil wound around the trailing core, a leading core, and a second coil wound around the leading core. The trailing core includes a return pole opposed to a trailing side of the main pole with a write gap therebetween, and side shields arranged individually on opposite sides of the main pole transversely relative to tracks and magnetically separated from the main pole at a distance not more than double a track pitch of the recording medium. The leading core includes a junction opposed to a leading side of the main pole with a gap therebetween and joined to the side shields with a width of 20 μm or less transversely relative to the tracks and a connecting portion joined to the main pole in a position off the recording medium. | 07-19-2012 |
20120262820 | MAGNETIC HEAD, HEAD GIMBAL ASSEMBLY WITH THE SAME, AND DISK DRIVE - According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a return pole opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between respective facing surfaces of the main pole and the return pole and configured to produce a high-frequency magnetic field. At least one of the main and return poles faces the high-frequency oscillator and includes a laminated structure portion includes a magnetic layer and a nonmagnetic layer laminated to one another. | 10-18-2012 |
20140002926 | MAGNETIC HEAD POLE INCLUDING LAMINATED STRUCTURE HAVING MAGNETIC AND NONMAGNETIC LAYERS | 01-02-2014 |
Patent application number | Description | Published |
20090103883 | OPTICAL ATTENUATOR - In an optical attenuator, there are a first optical waveguide | 04-23-2009 |
20100171023 | PHOTOELECTRIC CONVERTER - To provide a photoelectric converter capable of reducing the height of the device. The photoelectric converter includes: a light emitting element or a light receiving element; an IC circuit for transmitting/receiving an electric signal to/from the light emitting element or the light receiving element; a mount substrate adapted to be mounted on one surface from the side on which the light emitting element emits light, or the side on which the light receiving element receives light; an electric connector adapted to be provided on the one surface or the other surface of the mount substrate, and to be attached and detached to and from an external connector; and a waveguide adapted to be provided on the mount substrate along the one surface or the other surface of the mount substrate, and to be optically coupled to the light emitting element or the light receiving element. | 07-08-2010 |
20100220957 | OPTICAL MODULE - An optical module includes an emitter-side mounting substrate, a receiver-side mounting substrate and an external waveguide substrate. The mounting substrate is provided with a waveguide having a core and a pair of fitting recesses. The external waveguide substrate is provided with an external waveguide having a core, a pair of fitting tabs and a lap joint portion. As the fitting tabs are fitted into the respective fitting recesses, the mounting substrate and the external waveguide substrate are joined together, the two cores are aligned with each other, and the lap joint portion is positioned to overlap the mounting substrate. | 09-02-2010 |
20120299862 | INFORMATION PROCESSING DEVICE, PROCESSING CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM - An information processing device, while in a first input mode for receiving a touchless operation as an input, receives a touchless operation as an input, and starts processing that corresponds to the received touchless operation. If the information processing device detects a switch operation, which is made with a touch on the information processing device for switching from the first input mode to a second input mode that is a mode for receiving a touch operation as an input, within a predetermined time period after the reception of the touchless operation, the information processing device sets an output status obtained as a result of the started processing to an output status which has been obtained before the start of the processing. | 11-29-2012 |
20130069988 | DISPLAY DEVICE AND METHOD OF SWITCHING DISPLAY DIRECTION - A portable display device comprises: a tilt detection unit detecting an angle of rotation, measured between a vertical plane component of a tilt vector of a predetermined reference line in the display and a gravitational vector, as a display tilt; a facial orientation specification unit recognizing a face of a person facing the display and specifying an upright orientation of the face; a terminal orientation determination unit establishing a plurality of angle ranges, and determining whether the display tilt newly detected by the tilt detection unit exceeds a given angle range and enters another angle range, the given angle range including the angle detected by the tilt detection unit upon updating a previous display orientation; and a control unit causing the facial orientation specification unit to begin the specification when the terminal orientation determination unit makes an affirmative determination, and updating the display orientation according to the specified upright orientation. | 03-21-2013 |
20130330059 | CONTENT PLAYBACK DEVICE AND CONTENT PLAYBACK METHOD - A content playback device includes: a video playback unit which plays content having plural scenes; an object appearance information acquisition unit which acquires, for each of the plural scenes, object appearance information of each of one or more objects which appear in the content by analyzing metadata which includes appearance scene data for identifying the one or more objects appearing in at least one of the scenes, the object appearance information indicating whether the object appears at least in or after the scene; and a display unit which presents the object appearance information acquired for a scene being played, when the video playback unit is playing the content. | 12-12-2013 |
20140074830 | DEVICE FOR PRESENTING RECIPE AND METHOD FOR PRESENTING RECIPE - A recipe presentation device includes: a recipe storage unit storing recipes each including preparation elements of ingredients, intermediate ingredients, and a dish to be served; a receiving unit which receives a dish specified by a user; a search unit which searches the recipe storage unit for a first recipe which is a recipe for the dish; a similarity calculation unit which calculates similarities between the individual recipes for the dishes stored in the recipe storage unit and the first recipe; a selection unit which selects, according to the similarities, a second recipe which is a recipe similar to the first recipe among the recipes for the dishes; and a presentation unit which presents a dish corresponding to the selected second recipe. | 03-13-2014 |
20140089299 | RECIPE PRESENTATION SYSTEM AND RECIPE PRESENTATION METHOD - A recipe presentation system which presents an integrated recipe for a plurality of dishes includes: a recipe storage unit storing recipes for dishes including preparation elements arranged in a hierarchy according to closeness to completion of preparation of the respective dishes; a recipe selection unit which allows a user to select a first recipe and a second recipe from among the recipes; an overlapping preparation element identification unit which identifies common preparation elements between the first recipe and the second recipe; a recipe integration unit which generates the integrated recipe by arranging, in order of preparation, the preparation elements included in the first recipe and the preparation elements included in the second recipe, in a manner such that the user recognizes, as a single preparation element, the common preparation elements; and a recipe output unit which outputs the integrated recipe. | 03-27-2014 |
20150098229 | ILLUMINATION DEVICE - An illumination device includes a light emitting module having a module substrate and a semiconductor light emitting element mounted to the module substrate, a base including a mounting surface on which the light emitting module is mounted, a circuit unit provided at a side of a rear surface of the base opposite to the mounting surface and configured to drive the light emitting unit; and a circuit case which accommodates and holds the circuit unit in an internal space thereof. The circuit case includes a tubular portion having an opening arranged to face the rear surface of the base and an insulation portion interposed between the rear surface of the base and the circuit unit to cover the opening of the tubular portion. The insulation portion includes a window through which the internal space of the circuit case leads to the rear surface of the base. | 04-09-2015 |
20150098230 | ILLUMINATION DEVICE - An illumination device includes a light emitting module having a module substrate and a semiconductor light emitting element mounted to the module substrate, a base having a mounting surface on which the light emitting module is mounted, and a cover portion configured to cover an edge portion of the module substrate without pressing the edge portion. The module substrate includes a surface which is bonded to the mounting surface of the base through an adhesive layer. The base includes a protrusion provided to protrude upward from the mounting surface without being covered by the module substrate. The cover portion is provided on the protrusion. | 04-09-2015 |
Patent application number | Description | Published |
20100171916 | HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL FILM, OPTICAL FILM COMPRISING THE SAME, AND IMAGE DISPLAY DEVICE - A homeotropic alignment liquid crystal film is provided with a liquid crystalline substance containing a side chain liquid crystalline compound having an oxetanyl group, as a constituent, aligned homeotropically on an alignment substrate while being in a liquid crystal state and fixed in the homeotropic alignment by allowing the oxetanyl group to react. Thus, the homeotropic alignment liquid crystal film can be stably produced without necessitating a complicated step such as light irradiation under an inert gas atmosphere and is excellent in alignment retainability after being fixed in the homeotropic alignment and in mechanical strength. | 07-08-2010 |
20110221968 | RECEIVING APPARATUS FOR DIGITAL BROADCASTING SIGNAL AND RECEIVING/RECORDING/REPRODUCING APPARATUS THEREOF - In a digital broadcasting signal receiving/recording/reproducing apparatus, a recorded program can be immediately reproduced without performing complicated operations. Only a desired program and information related to the desired program are separated to be extracted from the digital broadcasting signal. Then, the separated/extracted broadcasting signal is supplied to a recording/reproducing apparatus. In the recording/ reproducing apparatus, the supplied broadcasting signal is recorded, and the recorded program can be immediately reproduced without complicated manipulating operations during the signal reproducing operation. | 09-15-2011 |
20130167909 | SOLAR CELL ENCAPSULANT, AND SOLAR CELL MODULE USING THE SAME - A solar cell encapsulant used the resin component containing an ethylene.α-olefin copolymer and a copolymer of ethylene-a functional group-containing monomer, having good productivity, superior transparency, and also superior modulus of elasticity in tension, heat resistance, adhesive property and steam transmittance resistance, and the solar cell module using the same. | 07-04-2013 |
Patent application number | Description | Published |
20090318707 | NOVEL MALEIMIDE DERIVATIVE - A compound represented by the following general formula (I): | 12-24-2009 |
20100033865 | MAGNETIC RECORDING METHOD AND MAGNETIC RECORDING APPARATUS - One purpose of the invention according to one embodiment is to provide a magnetic recording apparatus of high recording density in which magnetization transition curvature amount of a recording pattern is small. In one embodiment, the center of a heating area is arranged at a track edge side of a recording pattern as compared with the width-direction center position of a main magnetic pole of a recording head, and a recording magnetic field is applied while a medium is locally heated at the time of signal recording. A switching magnetic field of the medium is locally reduced by heating, so that a line where the switching magnetic field of the medium is equal to the recording magnetic field from the head approaches the heating center position, and a desired recording pattern in which the transition curvature amount is reduced can be realized. Other systems and methods are also presented. | 02-11-2010 |
20120075499 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM - An image processing apparatus including: a pixel array section in which unit pixels, each having a photoelectric conversion element, are two-dimensionally arranged in a matrix; and a signal processing section determining a signal level by any one of a water gate mode determining the signal level in accordance with a first amount of electric charge based on an electric charge accumulated in the unit pixels, the electric charge more than or equal to a prescribed accumulated electric charge, in a first exposure period or a second amount of electric charge based on all the electric charges accumulated in the unit pixels in a second exposure period including the first exposure period and a multiple exposure mode determining the signal level in accordance with a plurality of amounts of electric charge based on all the electric charges accumulated in the unit pixels in a plurality of exposure periods. | 03-29-2012 |
20130136478 | IMAGE FORMING APPARATUS AND CONTROL METHOD FOR IMAGE FORMING APPARATUS FOR SWITCHING A PRINTING METHOD BASED ON STATE OF DRAWING OBJECT - An image forming apparatus including a feeding unit configured to feed a paper sheet, a fixing unit configured to fix a toner image onto the paper sheet fed by the feeding unit based on an image to be printed, and a determination unit configured to determine, for each page, whether to execute, by the fixing unit, fingerprint trace removal processing for removing a fingerprint trace adhering to the paper sheet fed by the feeding unit, wherein if it is determined to execute the fingerprint trace removal processing, the fixing unit is configured to perform the fixing of the toner image after performing the fingerprint trace removal processing. | 05-30-2013 |
20130182352 | RECORDING HEAD, AND DISK DRIVE WITH THE SAME - According to one embodiment, a recording head includes a main pole formed of a soft magnetic material, a write shield pole formed of a soft magnetic material and on a trailing side of the main pole with a write gap, and side shields on both sides of the main pole in a track width direction and including nonmagnetic cavities formed of a nonmagnetic material in inner portions of the side shields. The side shields includes surfaces formed of a soft magnetic material and configured to be between a distal end portion of the main pole and the nonmagnetic cavity and between the recording medium and the nonmagnetic cavity. | 07-18-2013 |
20130271869 | MAGNETIC RECORDING HEAD AND DISK DEVICE INCLUDING THE SAME - A magnetic recording head includes a main magnetic pole generating a recording magnetic field, a trailing shield, a recording coil generating a magnetic field and a high frequency oscillator. The trailing shield includes a magnetic region including a gap side end surface facing a write gap and a nonmagnetic film arranged in the vicinity of the write gap in the trailing shield, and within a plane including track width direction centers of the main magnetic pole and the high frequency oscillator and being perpendicular to a recording layer of a recording medium, a film thickness of the nonmagnetic film along a track moving direction is substantially equivalent to or more than a half of a distance from the gap side end surface to the nonmagnetic film. | 10-17-2013 |
20140002924 | MAGNETIC RECORDING HEAD, AND DISK DRIVE COMPRISING THE SAME | 01-02-2014 |
20140078618 | MAGNETIC RECORDING HEAD AND DISK DRIVE INCLUDING THE SAME - According to one embodiment, a magnetic recording head of a disk drive includes a main pole configured to generate a magnetic field in a direction perpendicular to a recording layer of a recording medium, a write shield magnetic pole opposite to a trailing side of the main pole with a gap, a coil configured to excite a magnetic flux in a magnetic circuit, and a high-frequency oscillator provided between a tip portion of the main pole on a side of the recording medium and the write shield magnetic pole to generate a high-frequency magnetic field. The write shield magnetic pole includes an end face opposite to the high-frequency oscillator and the end face is formed so that a distance from the main pole increases with an increasing distance from the recording medium. | 03-20-2014 |
20140104996 | MAGNETIC HEAD SLIDER APPARATUS, MAGNETIC DISK DRIVE APPARATUS, AND SUSPENSION THEREOF - Provided is a magnetic head slider apparatus that can minimize a change in a roll angle caused by an impact force even with a submount mounted on a side surface thereof and achieve steady flying with the roll angle minimized. | 04-17-2014 |
20150117168 | MAGNETIC RECORDING HEAD AND DISK DEVICE INCLUDING THE SAME - A recording head for recording information on a rotating recording medium of a storage device includes a main magnetic pole which generates a recording magnetic field in a direction perpendicular to a recording medium facing surface of the magnetic recording head, and a light generating element which is provided on a leading side of the main magnetic pole, and generates light for heating the recording layer of the recording medium. The main magnetic pole includes an end surface facing the light generating element that is inclined with respect to the direction perpendicular to the recording medium facing surface toward the light generating element. | 04-30-2015 |
Patent application number | Description | Published |
20110205865 | Thermally-Assisted Magnetic Recording Head - A thermally assisted magnetic recording head with highly efficient optical coupling, while guiding a laser beam from a semiconductor laser element, i.e., a light source, to a leading end thereof, eliminating an influence due to heat generated by the element, and having excellent floating characteristics. The thermally assisted magnetic recording head includes a substrate | 08-25-2011 |
20110299367 | THERMALLY ASSISTED MAGNETIC RECORDING DEVICE - There is provided a thermally assisted magnetic recording device capable of preventing collision between a thermally assisted magnetic recording head and a disk due to thermal deformation of a near-field transducer. The thermally assisted magnetic recording device includes a temperature sensor for measuring the temperature in the vicinity of the near-field transducer, a table that stores the relationship between temperature and deformation in the vicinity of the near-field transducer, and a control unit. The control unit calculates the deformation in the vicinity of the near-field transducer, from the temperature measured by the temperature sensor and the relationship between temperature and deformation stored in the table. Then, the control unit drives the flying height control actuator according to the calculated deformation to control the distance between the thermally assisted magnetic recording and the disk in order to avoid contact between them. | 12-08-2011 |
20120113771 | HEAT-ASSISTED RECORDING HEAD AND HEAT-ASSISTED RECORDING DEVICE - In a thermally assisted recording head using a conductive scatterer as an optical near-field transducer, a propagation loss in a waveguide for guiding light to the scatterer is reduced. An optical near-field is generated by using the conductive scatterer having a width that gradually becomes smaller toward a vertex at which the optical near-field is generated. At the same time, a height of the conductive scatterer for generating the optical near-field is made substantially equal to a height of a main pole or longer than the height of the main pole. | 05-10-2012 |
20120320719 | Thermally Assisted Magnetic Head Assembly and Magnetic Disk Device - A slider including a magnetic head part, an optical waveguide, and a near field element is fixed by first and second adhesives to a submount on which a semiconductor laser and a mirror are mounted, the mirror being placed at one end of the semiconductor laser in a resonance direction thereof and reflecting a laser in a direction intersecting with the resonance direction. At this time, at least parts of the first and second adhesives are applied to a position opposed to the semiconductor laser with an intermediation of the submount. The first adhesive having a higher Young's modulus than that of the second adhesive is applied onto an inflow end side of the slider including a solder connection portion, the second adhesive being applied onto an outflow end side of the slider. | 12-20-2012 |
20130107680 | TAR TEMPERATURE SENSOR HAVING FASTER RESPONSE TIME | 05-02-2013 |
20150109892 | DUAL THERMAL SENSOR FOR HAMR WAVEGUIDE POWER MONITOR AND INTEGRATION WITH THE CONTACT SENSOR - Embodiments of the present invention generally relate to a HAMR device having two temperature sensors. The first temperature sensor is disposed adjacent a waveguide and is about two or more micrometers away from an air bearing surface. The first temperature sensor has a length, a width and a thickness, and the length is greater than the width and the thickness. The length of the first temperature sensor is substantially perpendicular to the waveguide. | 04-23-2015 |
20150146507 | Submount-Integrated PhotoDetector For Monitoring A Laser For A Heat-Assisted Magnetic Recording Head - In a heat-assisted magnetic recording hard disk drive, a laser module includes a submount-integrated photodetector configured to receive optical energy from a laser by way of a head slider. The submount may be formed of a semiconductor material such as a crystalline silicon material, and the photodetector may be a photodiode that is integrally formed with the submount. A HAMR head slider may comprise a feedback waveguide configured to guide optical energy from the laser through the slider to a feedback photodiode at an interface of the submount and the slider, to detect the optical energy transmitted through the slider to the slider air bearing surface (ABS). A back facet photodiode may also be integrally formed with the submount and configured to receive back facet optical energy to detect the optical energy generated by the laser. | 05-28-2015 |