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469results about "Tape carriers" patented technology
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Magnetic recording medium
ActiveUS20120045664A1Superior recording/reproducing characteristicSuperior characteristic transportMaterials with ironRecord information storageNon magneticHexane
A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 inn and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
Owner:FUJIFILM CORP
Magnetic tape
InactiveUS20070230054A1Shorten the trackSimple resultRecord information storageTape carriersMagnetic tapeNon magnetic
A magnetic tape including: a nonmagnetic support; a substantially nonmagnetic layer containing nonmagnetic powder and a binder; and a magnetic layer containing ferromagnetic powder and a binder, in this order, wherein the magnetic tape has a coefficient of temperature expansion of from 0 to 10×10−6 / ° C. and a coefficient of humidity expansion of 0 to 7×10−6 / % RH each in a transverse direction of the magnetic tape, and the magnetic tape has a dimensional deformation amount of from 0.01 to 0.06% in the transverse direction in case of applying a tensile stress of 1N to the magnetic tape at 60° C. for 50 hours in a longitudinal direction of the magnetic tape.
Owner:FUJIFILM CORP
Magnetic signal reproduction system and magnetic signal reproduction method
ActiveUS20080297950A1Good electromagnetic characteristicImprove running stabilityTape carriersRecord information storageNuclear magnetic resonanceMicroscope
The magnetic signal reproduction system comprises a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support; and a reproduction head, wherein a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 2500 / 10,000 μm2, a quantity of lubricant on the magnetic layer surface, denoted as a surface lubricant index, ranges from 0.5 to 5.0, a surface abrasive occupancy of the magnetic layer ranges from 2 to 20 percent, and the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer.
Owner:FUJIFILM CORP
Magnetic tape and magnetic tape device
ActiveUS20170186460A1Increase capacityEnhance head positioningAlignment for track following on tapesRecord information storageMagnetic tension forceMagnetic force microscope
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the coercive force measured in the longitudinal direction of the magnetic tape is less than or equal to 167 kA / m, a timing-based servo pattern is present on the magnetic layer, and the edge shape specified by observing the timing-based servo pattern with a magnetic force microscope is a shape in which the difference between the value of the 99.9% cumulative distribution function of the width of misalignment from the ideal shape in the longitudinal direction of the magnetic tape and the value L0.1 of the 0.1% cumulative distribution function, L99.9-L0.1, is less than or equal to 180 nm.
Owner:FUJIFILM CORP
Magnetic tape device and magnetic reproducing method
ActiveUS20180286448A1Improve smoothnessImprove surface smoothnessMaterials with ironTape carriersMagnetic tapeFull width at half maximum
The magnetic tape device includes a TMR head (reproducing head); and a magnetic tape including a magnetic layer including ferromagnetic powder, a binding agent, and fatty acid ester, in which Ra measured regarding a surface of the magnetic layer is equal to or smaller than 2.0 nm, full widths at half maximum of spacing distribution measured by optical interferometry regarding the surface of the magnetic layer before and after performing a vacuum heating with respect to the magnetic tape are greater than 0 nm and equal to or smaller than 7.0 nm, a difference between spacings before and after the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm, and ΔSFD (=SFD25° C.−SFD−190° C.) in a longitudinal direction of the magnetic tape is equal to or smaller than 0.50.
Owner:FUJIFILM CORP
Magnetic recording medium
ActiveUS9311946B2Superior recording/reproducing characteristic and transport characteristicFlat surfaceMaterials with ironRecord information storageNon magneticHexane
A magnetic recording medium of the present invention is a magnetic recording medium including a non-magnetic substrate; a non-magnetic layer that is formed on one of principal surfaces of the non-magnetic substrate and contains a non-magnetic powder, a binder, and a lubricant; and a magnetic layer that is formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate and contains a magnetic powder and a binder. The magnetic powder has an average particle size between 10 nm and 35 nm inclusive. The lubricant is migratable to the magnetic layer and forms a lubricant layer on a surface of the magnetic layer when a pressure is applied to the magnetic layer. When spacing of the surface of the magnetic layer before and after washing the lubricant with n-hexane is measured with a TSA (Tape Spacing Analyzer), the value of the spacing after washing is 3 to 10 nm, and the value of the spacing before washing is 1 to 5 nm smaller than the value of the spacing after washing.
Owner:FUJIFILM CORP
Magnetic tape, magnetic tape apparatus, servo pattern recording apparatus, magnetic tape producing method, and magnetic tape recording method
ActiveUS20090161249A1Accurate recordSuppress crosstalkAlignment for track following on tapesTape carriersMagnetic tapeControl theory
Provided is a magnetic tape that includes a data band, including servo patterns, data, and a guard space. The servo patterns is formed along a longitudinal direction of the magnetic tape with an interval provided between each of the servo patterns, each of the servo patterns formed across a full width of the data band. The data is disposed between the servo patterns. The guard space is disposed between each of the servo patterns and the data.
Owner:SONY CORP
Magnetic tape and magnetic tape device
ActiveUS20170372740A1Improve accuracyAccurate informationBase layers for recording layersAlignment for track following on tapesMagnetic tapeFull width at half maximum
Provided is a magnetic tape in which the total thickness is equal to or smaller than 5.30 μm, the magnetic layer includes a timing-based servo pattern, a magnetic layer surface Ra is equal to or smaller than 1.8 nm, the magnetic layer includes fatty acid ester, a full width at half maximum of spacing distribution measured by optical interferometry regarding the surface of the magnetic layer before performing vacuum heating with respect to the magnetic tape is greater than 0 nm and equal to or smaller than 7.0 nm, a full width at half maximum of spacing distribution measured after performing the vacuum heating is greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between a spacing measured after performing the vacuum heating and a spacing measured before performing the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
Owner:FUJIFILM CORP
Magnetic tape
Provided is a magnetic tape in which ferromagnetic powder included in a magnetic layer is ferromagnetic hexagonal ferrite powder having an activation volume equal to or smaller than 1,600 nm3, the magnetic layer includes one or more components selected from the group consisting of fatty acid and fatty acid amide, and an abrasive, a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on the surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is equal to or greater than 45 atom %, and a tilt cos θ of the ferromagnetic hexagonal ferrite powder with respect to the surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 1.00.
Owner:FUJIFILM CORP
Magnetic tape device and magnetic reproducing method
ActiveUS20180286442A1Improve smoothnessImprove surface smoothnessMaterials with ironRecord information storageIn planeX-ray
The magnetic tape device includes a TMR head (reproducing head); and a magnetic tape including a magnetic layer including ferromagnetic hexagonal ferrite powder, a binding agent, and fatty acid ester, in which an XRD intensity ratio obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical direction squareness ratio is 0.65 to 1.00, Ra measured regarding a surface of the magnetic layer is equal to or smaller than 2.0 nm, full widths at half maximum of spacing distribution measured by optical interferometry regarding the surface of the magnetic layer before and after performing a vacuum heating with respect to the magnetic tape are greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between spacings before and after the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
Owner:FUJIFILM CORP
Magnetic tape and magnetic tape device
ActiveUS10074393B2Improve accuracyExact reproductionMaterials with ironAlignment for track following on tapesMagnetic force microscopeMagnetic tension force
The magnetic tape includes a magnetic layer having ferromagnetic powder and a binder on a non-magnetic support, in which the magnetic layer includes a timing-based servo pattern, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder having an activation volume equal to or smaller than 1,600 nm3, and an edge shape of the timing-based servo pattern specified by a magnetic force microscope observation is a shape in which a difference (l99.9−l0.1) between a value l99.9 of a cumulative frequency function of 99.9% of a position deviation width from an ideal shape in a longitudinal direction of the magnetic tape and a value l0.1 of the cumulative frequency function of 0.1% thereof is equal to or smaller than 180 nm.
Owner:FUJIFILM CORP
Magnetic recording medium and magnetic recording and reproducing device
ActiveUS20190103131A1Excellent electromagnetic conversion characteristicAvoid it happening againDisposition/mounting of recording headsMagnetic materials for record carriersIn planeX-ray
Provided are a magnetic recording medium, in which a magnetic layer includes ferromagnetic hexagonal ferrite powder, a binding agent, and an oxide abrasive, an intensity ratio Int(110) / Int(114) obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical squareness ratio of the magnetic recording medium is 0.65 to 1.00, a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050, 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, and a magnetic recording and reproducing device including this magnetic recording medium.
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 device and head tracking servo method
ActiveUS9984716B1Avoid it happening againImprove accuracyProtective coatings for layersTape carriersMagnetic tapeX-ray
The magnetic tape device includes: a magnetic tape; and a servo head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m / sec, the servo head is a TMR head, 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 magnetic layer includes a servo pattern, the magnetic layer includes one or more components selected from the group consisting of fatty acid and fatty acid amide, and a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on a surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 45 to 65 atom %.
Owner:FUJIFILM CORP
Magnetic tape and method of manufacturing the same
ActiveUS9721605B2Avoid it happening againImprove the immunityBase layers for recording layersRecord information storageMedicineMagnetic tape
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 at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; a quantity of components selected from the group consisting of a fatty acid and a fatty acid amide per unit area of the magnetic tape among components that are extracted from a surface on the magnetic layer side of the magnetic tape is less than or equal to 15.0 mg / m2, and a concentration of carbon, C, that is obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on the surface on the magnetic layer side of the magnetic tape is greater than or equal to 50 atom %.
Owner:FUJIFILM CORP
Magnetic tape and method of manufacturing the same
ActiveUS20170221517A1Good electromagnetic propertiesCompromise running stabilityMagnetic materials for record carriersBase layers for recording layersMagnetic tapeOptoelectronics
The magnetic tape has a magnetic layer and a backcoat layer, wherein, each of the magnetic layer and backcoat layer contains a fatty acid ester, the Ra measured on the magnetic layer side surface is less than or equal to 2.8 nm, the difference between the spacing measured by optical interferometry on the magnetic layer side surface after and before vacuum heating is greater than 0 nm but less than or equal to 8.0 nm, the FWHMbefore on the backcoat layer side surface is greater than 0 nm but less than or equal to 10.0 nm, the FWHMafter on the backcoat layer side surface is greater than 0 nm but less than or equal to 10.0 nm; and the difference between the spacing measured on the backcoat layer side surface after and before vacuum heating is greater than 0 nm but less than or equal to 8.0 nm.
Owner:FUJIFILM CORP
Magnetic tape
ActiveUS20170372739A1Improve running stabilityBase layers for recording layersRecord information storageMagnetic tapeFull width at half maximum
Provided is a magnetic tape with the total thickness of a non-magnetic and magnetic layers is equal to or smaller than 0.60 μm, a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra by ESCA on the surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is equal to or greater than 45 atom %, full widths at half maximum of spacing distribution measured by optical interferometry regarding the surface of the magnetic layer before and after vacuum heating with respect to the magnetic tape are respectively greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between a spacing measured after the vacuum heating and a spacing measured before the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
Owner:FUJIFILM CORP
Magnetic tape
ActiveUS20170249963A1Improve featuresImprove surface smoothnessBase layers for recording layersTape carriersMagnetic tapeSurface roughness
The magnetic tape has a magnetic layer containing ferromagnetic powder, abrasive, and binder on a nonmagnetic support, wherein the centerline average surface roughness Ra measured on the surface of the magnetic layer is less than or equal to 1.8 nm, the contact angle for 1-bromonaphthalene that is measured on the surface of the magnetic layer falls within a range of 45.0° to 60.0°, and the coefficient of friction that is measured on the base portion of the surface of the magnetic layer is less than or equal to 0.35.
Owner:FUJIFILM CORP
Magnetic recording medium and magnetic recording and reproducing device
ActiveUS20190103133A1Excellent electromagnetic conversion characteristicAvoid it happening againMaterials with ironBase layers for recording layersIn planeX-ray
Provided are a magnetic recording medium, in which a magnetic layer includes a ferromagnetic hexagonal ferrite powder, a binding agent, an oxide abrasive, an intensity ratio Int(110) / Int(114) obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical squareness ratio is 0.65 to 1.00, one or more kinds of component selected from the group consisting of fatty acid and fatty acid amide is contained in a magnetic layer side portion on the non-magnetic support, a C—H derived C concentration of the magnetic layer is 45 atom % to 65 atom %, 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, and a magnetic recording and reproducing device including this magnetic recording medium.
Owner:FUJIFILM CORP
Magnetic tape having controlled surface properties of the magnetic layer and method of manufacturing the same
The magnetic tape has a nonmagnetic layer containing nonmagnetic powder and binder on a nonmagnetic support, and has a magnetic layer containing ferromagnetic powder and binder on the nonmagnetic layer, wherein the combined thickness of the magnetic layer and the nonmagnetic layer is less than or equal to 0.80 μm; and the logarithmic decrement as determined by a pendulum viscoelasticity test on the surface on the magnetic layer side of the magnetic tape is less than or equal to 0.050 and the coefficient of friction as measured on a base portion of the surface on the magnetic layer side is less than or equal to 0.35.
Owner:FUJIFILM CORP
Magnetic recording medium and magnetic recording and reproducing device
ActiveUS20190103135A1Excellent electromagnetic conversion characteristicAvoid it happening againManufacture head surfaceRecord information storageIn planeX-ray
Provided are a magnetic recording medium, in which a magnetic layer includes a ferromagnetic hexagonal ferrite powder, a binding agent, and an oxide abrasive, an intensity ratio Int(110) / Int(114) obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical squareness ratio of the magnetic recording medium is 0.65 to 1.00, a contact angle with respect to 1-bromonaphthalene measured regarding a surface of the magnetic layer is 50.0° to 55.0°, 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, and a magnetic recording and reproducing device including this magnetic recording medium.
Owner:FUJIFILM CORP
Magnetic tape device, magnetic reproducing method, and head tracking servo method
ActiveUS10134433B2Improve accuracyExact reproductionMaterials with ironAlignment for track following on tapesMagnetic tapeX-ray
Provided is a magnetic tape device in which a magnetic tape transportation speed is equal to or lower than 18 m / sec, Ra measured regarding a surface of a magnetic layer of a magnetic tape is equal to or smaller than 2.0 nm, a C-H derived C concentration calculated from a C-H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on the surface of the magnetic layer at a photoelectron take-off angle of 10 degrees is 45 to 65 atom %, and ΔSFD (=SFD25° C.−SFD−190° C.) in a longitudinal direction of the magnetic tape is equal to or smaller than 0.50, with the SFD25° C. being SFD measured in a longitudinal direction of the magnetic tape at a temperature of 25° C., and the SFD−190° C. being SFD measured at a temperature of −190° C.
Owner:FUJIFILM CORP
Information recording tape
An information recording tape including a data-recording area and a non-data-recording area, with the data-recording area having a center-line average surface roughness Ra smaller than 3 nm and at most 100 / mm2 of protuberances standing at least 20 nm high, and with the non-data-recording area having a center-line average surface roughness Ra greater than 2 nm and more than 100 / mm2 of protuberances standing at least 20 nm high.
Owner:FUJI PHOTO FILM CO LTD CO LTD +1
Magnetic recording medium and magnetic recording and reproducing device
ActiveUS20190103134A1Excellent electromagnetic conversion characteristicAvoid it happening againMaterials with ironProtective coatings for layersIn planeX-ray
Provided are a magnetic recording medium, in which a magnetic layer includes ferromagnetic hexagonal ferrite powder, a binding agent, and an oxide abrasive, an intensity ratio Int(110) / Int(114) obtained by an X-ray diffraction analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical squareness ratio of the magnetic recording medium is 0.65 to 1.00, a coefficient of friction measured regarding a base portion of a surface of the magnetic layer is equal to or smaller than 0.30, 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, and a magnetic recording and reproducing device including this magnetic recording medium.
Owner:FUJIFILM CORP
Magnetic tape having controlled surface properties of the magnetic layer and method of manufacturing the same
ActiveUS10026434B2Improve surface smoothnessImprove featuresRecord information storageTape carriersMagnetic tapeSurface roughness
Owner:FUJIFILM CORP
Magnetic tape
ActiveUS20170372741A1Improve running stabilitySuitable compatibilityProtective coatings for layersRecord information storageMagnetic tapeX-ray
Provided is a magnetic tape in which a thickness of a back coating layer is equal to or smaller than 0.20 μm, a C—H derived C concentration calculated from a C—H peak area ratio of C1s spectra obtained by X-ray photoelectron spectroscopic analysis performed on the surface of the back coating layer at a photoelectron take-off angle of 10 degrees, is equal to or greater than 35 atom %, full widths at half maximum of spacing distribution measured by optical interferometry regarding the surface of the back coating layer before and after performing a vacuum heating with respect to the magnetic tape are respectively greater than 0 nm and equal to or smaller than 10.0 nm, and a difference between a spacing measured after performing the vacuum heating and a spacing measured before performing the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
Owner:FUJIFILM CORP
Magnetic tape device and head tracking servo method
ActiveUS10062403B1Improve accuracyExact reproductionTape carriersRecord information storageMagnetic force microscopeMagnetic tape
The magnetic tape device includes a magnetic tape; and a servo head, in which the servo head is a TMR head, the magnetic tape includes a servo pattern in the magnetic layer, a center line average surface roughness Ra measured regarding a surface of the magnetic layer is equal to or smaller than 2.0 nm, a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding the surface of the magnetic layer is equal to or smaller than 0.050, and a ratio (Sdc / Sac) of an average area Sdc of a magnetic cluster of the magnetic tape in a DC demagnetization state and an average area Sac of a magnetic cluster thereof in an AC demagnetization state measured with a magnetic force microscope is 0.80 to 1.30.
Owner:FUJIFILM CORP
Magnetic tape and maufacturing method thereof, and servo writer and servo write method
ActiveUS20050057838A1Driving/moving recording headsAlignment for track following on tapesMagnetic tapeMagnetization
A magnetic tape of the present invention comprises a plurality of servo bands and servo signals for performing tracking-control of a magnetic head, wherein the servo signals are recorded on the servo bands, wherein a DC magnetization region magnetized in one direction by direct current is arranged along longitudinal directions of the magnetic tape on the servo bands, wherein each of the servo signals is magnetized in a reverse direction for the one direction of a DC magnetization and is recorded within the DC magnetization region, and wherein any of a relative ratio and relative difference of DC magnetization intensity in the DC magnetization region and recording magnetization intensity of each of the servo signals differs for each of the servo bands.
Owner:FUJIFILM HLDG CORP +1
Magnetic recording medium
ActiveUS20170221513A1Increased durabilityHigh outputProtective coatings for layersRecord information storageHysteresisNon magnetic
A magnetic recording medium of the present invention includes a non-magnetic substrate, and a magnetic layer containing a magnetic powder. The magnetic powder is constituted by an ε-iron oxide powder. The magnetic layer has a squareness in a thickness direction of 0.65 or more. In a differential curve obtained by differentiating a hysteresis curve in the thickness direction of the magnetic layer, two or more peaks are present. In a case where, out of peaks in the same direction among the above-described peaks, a local maximum of a largest peak in a magnetic field range of +500 oersted [Oe] or more is taken as P1 and a local maximum of a largest peak in a magnetic field range of −500 oersted [Oe] or more and less than +500 oersted [Oe] is taken as P2, a relationship below is satisfied:0.25≦P2 / P1≦0.60.
Owner:MAXELL HLDG LTD
Magnetic tape and magnetic tape device
ActiveUS20170372744A1Restrain output decreaseImprove accuracyBase layers for recording layersAlignment for track following on tapesMagnetic tapeFull width at half maximum
Provided is a magnetic tape in which the total thickness of a non-magnetic layer and a magnetic layer is equal to or smaller than 0.60 μm, the magnetic layer includes a timing-based servo pattern, the magnetic layer includes fatty acid ester, a full width at half maximum of spacing distribution measured by optical interferometry regarding the surface of the magnetic layer before performing vacuum heating with respect to the magnetic tape is greater than 0 nm and equal to or smaller than 7.0 nm, a full width at half maximum of spacing distribution measured after performing the vacuum heating is greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between a spacing measured after performing the vacuum heating and a spacing measured before performing the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.
Owner:FUJIFILM CORP
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