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230results about How to "Increase recording capacity" patented technology
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Magnetic tape
ActiveUS20160093322A1Reduce coefficient of frictionImprove noiseRecord information storageMagnetic recordingMagnetic tapeNon magnetic
The magnetic tape comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder, nonmagnetic powder, and binder, wherein a total thickness of the magnetic tape is less than or equal to 4.80 μm, and a coefficient of friction as measured on a base portion of a surface of the magnetic layer is less than or equal to 0.35.
Owner:FUJIFILM CORP
Magnetic tape device and head tracking servo method
ActiveUS20180286447A1Excellent sensitivityIncrease recording capacityMaterials with ironAlignment for track following on tapesMagnetic layerHead tracking
The magnetic tape device includes a magnetic tape and a TMR head (servo head), in which the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity Int(110) of a diffraction peak of a (110) plane with respect to a peak intensity Int(114) of a diffraction peak of a (114) plane of a hexagonal ferrite crystal structure obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, and a vertical direction squareness ratio of the magnetic tape is 0.65 to 1.00.
Owner:FUJIFILM CORP
Magnetic tape and magnetic tape device
ActiveUS9837116B2Increase the number ofIncrease recording capacityAlignment for track following on tapesRecord information storageMagnetic tapeSurface roughness
Owner:FUJIFILM CORP
Magnetic tape and method of manufacturing the same
ActiveUS9711174B2Reduce thicknessIncrease recording capacityBase layers for recording layersTape carriersMagnetic tapeNon magnetic
Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein a total thickness of the magnetic tape is less than or equal to 4.80 μm; at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the magnetic layer side of the magnetic tape is greater than or equal to 45 atom %.
Owner:FUJIFILM CORP
Magnetic tape and method of manufacturing the same
ActiveUS20170032812A1Increase the lengthReduce thicknessRecord information storageMaterials with non-metallic substancesMagnetic tapeNon magnetic
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on one surface of a nonmagnetic support, and has a backcoat layer containing nonmagnetic powder and binder on the other surface thereof, wherein the magnetic layer contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide; the backcoat layer has a thickness of less than or equal to 0.30 μm and contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide; a magnetic layer side C—H derived C concentration is greater than or equal to 45 atom %; and a backcoat layer side C—H derived C concentration is greater than or equal to 35 atom %.
Owner:FUJIFILM CORP
Magnetic tape device and magnetic reproducing method
ActiveUS20180286449A1Improve signal-to-noise ratioIncrease recording capacityRecord information storageManufacture of flux-sensitive headsMagnetic tapeX-ray
The magnetic tape device includes a magnetic tape and a TMR head, in which the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity Int(110) of a diffraction peak of a (110) plane with respect to a peak intensity Int(114) of a diffraction peak of a (114) plane of a hexagonal ferrite crystal structure obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, and a vertical direction squareness ratio of the magnetic tape is 0.65 to 1.00.
Owner:FUJIFILM CORP
Magnetic tape
ActiveUS10026430B2Improve noiseDeterioration of characteristicRecord information storageMagnetic recordingMagnetic tapeNon magnetic
The magnetic tape comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder, nonmagnetic powder, and binder, wherein a total thickness of the magnetic tape is less than or equal to 4.80 μm, and a coefficient of friction as measured on a base portion of a surface of the magnetic layer is less than or equal to 0.35.
Owner:FUJIFILM CORP
Recording and reproducing apparatus, signal decoding circuit, error correction method and iterative decoder
InactiveUS7237173B2Increase recording capacityIncrease the number ofData representation error detection/correctionModification of read/write signalsCorrection methodSignal decoding
A recording and reproducing apparatus having an ECC-less error correction function, includes an erasure detector generating an erasure flag indicating erasure of a read signal; and an iterative decoder having two soft-in / soft-out (SISO) decoders, i.e., an inner decoder and an outer decoder, and correcting the erasure by inputting the erasure flag ek into the inner decoder and performing erasure compensation in the inner decoder. As the erasure compensation in the inner decoder, channel information is masked while the erasure flag is on. The erasure of data due to a media defect is detected inside the iterative decoder, and the second erasure flag is inputted into the inner decoder to perform erasure compensation in the inner decoder.
Owner:FUJITSU LTD
Magnetic tape and method of manufacturing the same
ActiveUS20170053671A1Increase recording capacityReduce thicknessTape carriersRecord information storageMagnetic tapeNon magnetic
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on the surface on one side of a nonmagnetic support and has a backcoat layer containing nonmagnetic powder and binder on the surface on the other side of the nonmagnetic support, wherein the backcoat layer is less than or equal to 0.30 μm in thickness; and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the backcoat layer side of the magnetic tape is less than or equal to 0.060.
Owner:FUJIFILM CORP
Magnetic tape
InactiveUS7255908B2Without reducing data areaReduce areaLayered productsAlignment for track following on tapesMagnetic tapeOxygen
A magnetic tape (1) characterized by having a backcoating layer (5) which comprises a binder and fine particles having been dispersed in the binder and being capable of irreversibly changing in color on oxidation reaction, and has a sufficient number of microvoids of sufficient size to supply sufficient oxygen to cause the oxidation reaction.
Owner:QUANTUM CORP
Magnetic tape and method of manufacturing the same
ActiveUS9704527B2Increase coefficient of frictionReduced stabilityRecord information storageMetals or alloysMagnetic tapeNon magnetic
Owner:FUJIFILM CORP
Magnetic tape and method of manufacturing the same
ActiveUS20160247530A1Improve running stabilityReduce coefficient of frictionRecord information storageMetals or alloysMagnetic tapeTotal thickness
The magnetic tape has on one surface of a nonmagnetic support a magnetic layer containing ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer containing nonmagnetic powder and binder, wherein the total thickness of the magnetic tape is less than or equal to 4.80 μm, the backcoat layer contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide, and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %.
Owner:FUJIFILM CORP
Magnetic tape having controlled surface properties of the backcoat layer and method of manufacturing the same
ActiveUS10026435B2Increase recording capacityReduce thicknessTape carriersRecord information storageMagnetic tapeNon magnetic
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on the surface on one side of a nonmagnetic support and has a backcoat layer containing nonmagnetic powder and binder on the surface on the other side of the nonmagnetic support, wherein the backcoat layer is less than or equal to 0.30 μm in thickness; and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the backcoat layer side of the magnetic tape is less than or equal to 0.060.
Owner:FUJIFILM CORP
Magnetic tape, magnetic tape cartridge, and magnetic recording and reproducing device
ActiveUS20170178677A1Reduce thicknessIncrease recording capacityBase layers for recording layersTape carriersMagnetic tapeNon magnetic
The magnetic tape includes a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer containing ferromagnetic powder, abrasive, and binder on the nonmagnetic layer, wherein a thickness of the nonmagnetic layer is less than or equal to 0.50 μm, a coefficient of friction as measured on a base portion of a surface of the magnetic layer is less than or equal to 0.35, and ΔSFD in a longitudinal direction of the magnetic tape as calculated with Equation 1, ΔSFD=SFD25° C.−SFD−190° C., is greater than or equal to 0.50, wherein, in Equation 1, SFD25° C. denotes a SFD as measured in the longitudinal direction of the magnetic tape in an environment with a temperature of 25° C., and SFD−190° C. denotes a SFD as measured in the longitudinal direction of the magnetic tape in an environment with a temperature of −190° C.
Owner:FUJIFILM CORP
Magnetic device, magnetic recording head, and magnetic recording apparatus
ActiveUS20080268291A1Improve recording densityIncrease recording capacityRecord information storageManufacture of flux-sensitive headsMagnetizationNon magnetic
A magnetic device includes a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third magnetic layer including a ferromagnetic material with a fixed magnetization direction, and a pair of electrodes. The pair of electrodes are operable to pass a current through a laminated body including the first and second magnetic layers, the nonmagnetic layer, and the third magnetic layer.
Owner:KK TOSHIBA
Magnetic tape
ActiveUS20170249965A1Increase recording capacityReduce thicknessBase layers for recording layersTape carriersMagnetic tapeMaterials science
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on one surface of a nonmagnetic support and has a backcoat layer containing nonmagnetic powder and binder on the other surface thereof, wherein the thickness of the backcoat layer is less than or equal to 0.20 μm, and the contact angle for 1-bromonaphthalene that is measured on the surface of the backcoat layer falls within a range of 10.0° to 30.0°.
Owner:FUJIFILM CORP
Head for thermal assisted magnetic recording device, and thermal assisted magnetic recording device
ActiveUS20110216635A1Increase head heightImprove floating stabilityCombination recordingRecord information storageHeat-assisted magnetic recordingEngineering
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.
Owner:HITACHI LTD
Information recording method, reproducing method, and recording/reproducing method utilizing holography
InactiveUS7321541B2Improve recording densityIncrease recording capacityRecord information storageDigital storageSpatial light modulatorRecording density
A method for recording information on a recording medium utilizing an interference pattern by interference between an information light modulated spatially with digital pattern information displayed on a spatial light modulator having multiple pixels and a reference light for recording. In order to provide a novel recording method capable of enhancing the recording density and the transfer rate furthermore, digital information to be recorded is represented by match / mismatch of the attributes of adjacent pixels in the spatial light modulator to produce digital pattern information.
Owner:OPTWARE
Magnetic recording disk and process for manufacture thereof
ActiveUS7045215B2Improve the lubrication effectImprove adhesionProtective coatings for layersSynthetic resin layered productsPerfluoropolyetherEther
Owner:WESTERN DIGITAL TECH INC
Information recording method, reproducing method, and recording reproducing method utilizing holography
InactiveUS20060050544A1Enhancement be weakenIncrease in number of pixelRecord information storageDigital storageRecording densityHolography
A method for recording information on a recording medium utilizing an interference pattern by interference between an information light modulated spatially with digital pattern information displayed on a spatial light modulator having multiple pixels and a reference light for recording. In order to provide a novel recording method capable of enhancing the recording density and the transfer rate furthermore, digital information to be recorded is represented by match / mismatch of the attributes of adjacent pixels in the spatial light modulator to produce digital pattern information.
Owner:OPTWARE
Head for thermal assisted magnetic recording device, and thermal assisted magnetic recording device
ActiveUS8243561B2Reduce in quantityIncrease recording capacityCombination recordingRecord information storageHeat-assisted magnetic recordingEngineering
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.
Owner:HITACHI LTD
Data recording and reproducing device, data recording and reproducing method, and recording medium
InactiveUS20060182004A1Improve recording densityImprove reading resolutionNanoinformaticsRecord information storageData recordingCantilever
A position control area (76A) is partly formed in the recording area (75) of a recording medium (70) and position information is recorded only in the position control area (76A). To record data in the recording medium (70) by a head (60) having a plurality of cantilevers (62A), (62B), . . . , the position information is read by the cantilever (62E) corresponding to the position control area (76A) and, based on the position information, the positioning control or moving control of all the other cantilevers is performed.
Owner:PIONEER CORP
Content recording apparatus, content playback apparatus, content recording method, content playback method, and computer program
InactiveUS20060013566A1Increase the number ofIncrease recording capacityTelevision system detailsElectronic editing digitised analogue information signalsComputer networkComputer science
A content recording apparatus for communicating with a content playback apparatus via a network, includes a first receiver for receiving, from the content playback apparatus, information related to a content segment to be received by the content playback apparatus, the content segment being a portion of a single content, an attaching unit for attaching, to the content segment, a content identification identifying the content segment based on the received related information, a second receiver for receiving, from the content playback apparatus, the content segment received by the content playback apparatus, a recorder for recording the received content segment with both the content identification and the related information associated with the received content segment, and a synthesizer for synthesizing, into the single content, content segments having the same content identification.
Owner:SONY CORP
Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus
ActiveUS20200126589A1Deterioration in electromagnetic conversionIncrease recording capacityMagnetic materials for record carriersRecord information storageZeta potentialIonogram
The magnetic tape includes a non-magnetic support; a non-magnetic layer including a non-magnetic powder and a binding agent on the non-magnetic support; and a magnetic layer including a ferromagnetic powder and a binding agent on the non-magnetic layer, in which a total thickness of the non-magnetic layer and the magnetic layer is equal to or smaller than 0.60 μm, an isoelectric point of a surface zeta potential of the magnetic layer is equal to or greater than 5.5, the magnetic layer includes an oxide abrasive, and an average particle diameter of the oxide abrasive obtained from a secondary ion image obtained by irradiating the surface of the magnetic layer with a focused ion beam is 0.04 μm to 0.08 μm.
Owner:FUJIFILM CORP
Magnetic tape device and magnetic reproducing method
ActiveUS10403317B2Increase recording capacityHigh capacity）Magnetic materials for record carriersRecord information storageMagnetic tapeX-ray
The magnetic tape device includes a magnetic tape and a TMR head, in which the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity Int(110) of a diffraction peak of a (110) plane with respect to a peak intensity Int(114) of a diffraction peak of a (114) plane of a hexagonal ferrite crystal structure obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, and a vertical direction squareness ratio of the magnetic tape is 0.65 to 1.00.
Owner:FUJIFILM CORP
Magnetic tape having characterized magnetic layer, tape cartridge, and recording and reproducing device
ActiveUS10403319B2Reduce thicknessIncrease recording capacityRecord information storageTape carriersMagnetic tapeNon magnetic
The magnetic tape includes a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer containing ferromagnetic powder, abrasive, and binder on the nonmagnetic layer, wherein a thickness of the nonmagnetic layer is less than or equal to 0.50 μm, a coefficient of friction as measured on a base portion of a surface of the magnetic layer is less than or equal to 0.35, and ΔSFD in a longitudinal direction of the magnetic tape as calculated with Equation 1, ΔSFD=SFD25° C.−SFD−190° C., is greater than or equal to 0.50, wherein, in Equation 1, SFD25° C. denotes a SFD as measured in the longitudinal direction of the magnetic tape in an environment with a temperature of 25° C., and SFD−190° C. denotes a SFD as measured in the longitudinal direction of the magnetic tape in an environment with a temperature of −190° C.
Owner:FUJIFILM CORP
Information recording medium and information recording/ reproducing device and method
InactiveUS20050122890A1Increase recording capacityIncrease capacityRecord information storageDigital recordingEngineeringRecording media
An information storage medium (1) has tracks in which information is recorded. The tracks are formed as a groove section (2) and a land section (3). The groove section (2) has a synchronous structure in which wobbles (2a) and (2b) formed on both walls of the groove section (2) are not displaced from each other in the circumferential direction of the medium, and the land section (3) has an asynchronous structure in which wobbles formed on both sides of the land section (3) are displaced from each other. A good signal is reproduced from each of the groove and land sections.
Owner:KK TOSHIBA
Magnetic recording head
ActiveUS8264799B2Improve recording densityIncrease recording capacityRecord information storageManufacture of flux-sensitive headsPower flowMagnetization
A magnetic device includes a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third magnetic layer including a ferromagnetic material with a fixed magnetization direction, and a pair of electrodes. The pair of electrodes are operable to pass a current through a laminated body including the first and second magnetic layers, the nonmagnetic layer, and the third magnetic layer.
Owner:KK TOSHIBA
Imaging apparatus
InactiveUS20110279691A1Less catchEasy to captureTelevision system detailsPicture signal generatorsImaging equipmentImage signal
An imaging apparatus having a continuous shooting function includes an imaging unit configured to generate an image signal based on an optical signal of a subject, a storage unit configured to store an image file based on the image signal, a first detector configured to detect a motion of the imaging apparatus, and a controller configured to control a capturing interval of the imaging unit for capturing an image in a continuous shooting operation based on a detecting result of the first detector so that the capturing interval for a magnitude of the motion of the imaging apparatus which is larger than a predetermined value is shorter than the capturing interval for the magnitude of the motion of the imaging apparatus which is smaller than the predetermined value.
Owner:PANASONIC CORP
Information recording medium and manufacturing process
InactiveUS20050276211A1Ensure electrical connection reliabilityHigh speed recordingMechanical record carriersRecord information storageInformation layerOrganic film
An information recording medium and manufacturing method for high-speed and high density recording. An inorganic film is formed by sputtering while applying a bias voltage to shift the substrate voltage potential in the negative direction, or a laminated film is formed by applying energy after coating a substrate with an organic film, and the irregularities maintained even after the laminated film is formed, so that stable, high-capacity and high-speed recording can be attained by forming a multi-information-layer that still retains the irregularities.
Owner:HITACHT MAXELL LTD
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