FujiFilm Assigned Sixteen Patents

Magnetic tape
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,861,491) developed by Oyanagi, Masahito, Kasada, Norihito, and Kurokawa, Takuto, Minami-ashigara, Japan, for a “magnetic tape.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”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.degree. to 60.0.degree., 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.”

The patent application was filed on February 27, 2017 (15/443,026).

Magnetic tape having characterized magnetic layer
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,854,230) developed by Kasada, Norihito, Tada, Toshio, Ozawa, Eiki, and Kurokawa, Takuto, Minami-ashigara, Japan, for a “magnetic tape having characterized magnetic layer.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The magnetic tape includes a magnetic layer including ferromagnetic powder, non-magnetic powder, and a binding agent and a back coating layer including non-magnetic powder and a binding agent, in which the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an Ra measured regarding a surface of the magnetic layer is equal to or smaller than 1.8 nm, an intensity ratio of a peak intensity of a diffraction peak of a (110) plane with respect to a peak intensity 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, a vertical squareness ratio of the magnetic tape is 0.65 to 1.00, and a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the back coating layer is equal to or smaller than 0.060.”

The patent application was filed on July 18, 2018 (16/038,884).

Magnetic tape having characterized magnetic layer
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,854,229) developed by Ozawa, Eiki, Tada, Toshio, Kasada, Norihito, and Kurokawa, Takuto, Minami-ashigara, Japan, for a “magnetic tape having characterized magnetic layer.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Provided is a magnetic tape in which an Ra measured regarding a surface of a magnetic layer is equal to or smaller than 1.8 nm, Int(110)/Int(114) of a hexagonal ferrite crystal structure obtained by an XRD analysis of the magnetic layer by using an In-Plane method is 0.5 to 4.0, a vertical squareness ratio of the magnetic tape is 0.65 to 1.00, 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 greater than 0 nm and equal to or smaller than 10.0 nm, and a difference between the spacings measured by optical interferometry regarding the surface of the back coating layer before and after performing the vacuum heating is greater than 0 nm and equal to or smaller than 8.0 nm.”

The patent application was filed on July 18, 2018 (16/038,847).

Magnetic tape having characterized magnetic layer
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,854,228) developed by Kurokawa, Takuto, Kasada, Norihito, Tada, Toshio, and Ozawa, Eiki, Minami-ashigara, Japan, for a “magnetic tape having characterized magnetic layer.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The magnetic tape includes a magnetic layer including ferromagnetic powder, non-magnetic powder, and a binding agent and a back coating layer including non-magnetic powder and a binding agent, in which the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, a center line average surface roughness measured regarding a surface of the magnetic layer is equal to or smaller than 1.8 nm, an intensity ratio of a peak intensity of a diffraction peak of a (110) plane with respect to a peak intensity 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, a vertical squareness ratio of the magnetic tape is 0.65 to 1.00, and a contact angle with respect to 1-bromonaphthalene measured regarding a surface of the back coating layer is 15.0.degree. to 30.0.degree.”

The patent application was filed on July 18, 2018 (16/038,771).

Magnetic tape having characterized magnetic layer and tape device
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,854,226) developed by Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape having characterized magnetic layer and magnetic tape device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Provided are a magnetic tape including: a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, in which the magnetic layer has a timing-based servo pattern, a center line average surface roughness Ra measured regarding a surface of the magnetic layer is equal to or smaller than 1.8 nm, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity of a diffraction peak of a (110) plane with respect to a peak intensity 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, and a magnetic tape device including this magnetic tape.”

The patent application was filed on July 18, 2018 (16/038,545).

Magnetic tape having characterized magnetic layer and tape device
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,854,226) developed by Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape having characterized magnetic layer and magnetic tape device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Provided are a magnetic tape including: a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, in which the magnetic layer has a timing-based servo pattern, a center line average surface roughness Ra measured regarding a surface of the magnetic layer is equal to or smaller than 1.8 nm, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity of a diffraction peak of a (110) plane with respect to a peak intensity 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, and a magnetic tape device including this magnetic tape.”

The patent application was filed on July 18, 2018 (16/038,545).

Magnetic tape having characterized magnetic layer
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,839,850) developed by Tada, Toshio, Kasada, Norihito, Ozawa, Eiki, and Kurokawa, Takuto, Minami-ashigara, Japan, for a “magnetic tape having characterized magnetic layer.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”Provided is a magnetic tape in which an Ra measured regarding a surface of a magnetic layer is equal to or smaller than 1.8 nm, Int(110)/Int(114) 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, a vertical squareness ratio of the magnetic tape is 0.65 to 1.00, the back coating layer includes one or more kinds of component 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 the surface of the back coating layer at a photoelectron take-off angle of 10 degrees is equal to or greater than 35 atom %.”

The patent application was filed on July 17, 2018 (16/037,596).

Magnetic tape, cartridge, and tape apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,811,048) developed by Ozawa, Eiki, Kasada, Norihito, and Musha, Atsushi, Minami-ashigara, Japan, for “magnetic tape, magnetic tape cartridge, and magnetic tape apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The magnetic tape includes a non-magnetic support and a magnetic layer, in which the magnetic layer has a timing-based servo pattern, an edge shape of the timing-based servo pattern, specified by magnetic force microscopy is a shape in which a difference between a value L.sub.99.9 of a cumulative distribution function of 99.9% and a value L.sub.0.1 of a cumulative distribution function of 0.1% in a position deviation width from an ideal shape of the magnetic tape in a longitudinal direction is 180 nm or less, and a difference between a spacing S.sub.0.5 measured, after n-hexane cleaning, on a surface of the magnetic layer under a pressure of 0.5 atm by optical interferometry and a spacing S.sub.13.5 measured, after n-hexane cleaning, under a pressure of 13.5 atm is 3.0 nm or less, and S.sub.0.5 is 5.0 nm or more.”

The patent application was filed on January 30, 2020 (16/777,279).

Magnetic tape reading apparatus and reading method
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,789,981) developed by Musha, Atsushi, Kanagawa, Japan, for “magnetic tape reading apparatus and a magnetic tape reading method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A magnetic tape reading apparatus includes a reading element unit which includes: a plurality of reading elements which are disposed in a state of being adjacent to each other and each of which reads data by a linear scanning method from a specific track region including a reading target track in a track region included in a magnetic tape, and an extraction unit which performs a waveform equalization process according to a deviation amount between positions of the magnetic tape and the reading element unit, with respect to each reading result for each reading element, to extract data derived from the reading target track from the reading result.”

The patent application was filed on May 2, 2019 (16/401,776).

Recording control device, method, recording tape cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,783,023) developed by Tokai, Naoaki, Hashimoto, Hirokazu, and Sumiya, Yosuke, Kanagawa, Japan, for “recording control device, recording control method, recording tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A recording control device, a recording control method, and a recording tape cartridge capable of estimating a lifetime of the recording tape cartridge are obtained. A recording control device reads information correlated with an error rate of reading or writing of data from or to a magnetic tape included in a recording tape cartridge, the information being recorded on a RFID tag included in the recording tape cartridge, and a measurement date of the information, and estimates a lifetime of the recording tape cartridge using the read information and the read measurement date, and the information measured at the time of using the recording tape cartridge and a measurement date.”

The patent application was filed on September 3, 2018 (16/120,329).

Magnetic tape having characterized magnetic layer and tape device
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,770,105) developed by Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape having characterized magnetic layer and magnetic tape device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”The magnetic tape includes: a non-magnetic support, a non-magnetic layer including non-magnetic powder and a binding agent on the non-magnetic support, and a magnetic layer including 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 .mu.m, the magnetic layer has a servo pattern, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder, an intensity ratio of a peak intensity of a diffraction peak of a (110) plane with respect to a peak intensity 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, and a magnetic tape device including this magnetic tape.”

The patent application was filed on July 18, 2018 (16/038,514).

Magnetic tape apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,755,741) developed by Ozawa, Eiki, Kasada, Norihito, and Musha, Atsushi, Minami-ashigara, Japan, for a “magnetic tape apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A magnetic tape apparatus includes a magnetic tape, a reading element unit and an extraction unit, in which a coefficient of friction measured regarding a base portion of a surface of the magnetic layer is equal to or smaller than 0.35, the reading element unit includes a plurality of reading elements each of which reads data by a linear scanning method from a specific track region including a reading target track in a track region included in the magnetic tape, and the extraction unit performs a waveform equalization process according to a deviation amount between positions of the magnetic tape and the reading element unit, with respect to each reading result for each reading element, to extract data derived from the reading target track from the reading result.”

The patent application was filed on June 28, 2019 (16/456,780).

Apparatus capable of determining deviation amount between magnetic head and magnetic tape based on reading servo pattern
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,755,735) developed by Ozawa, Eiki, Kasada, Norihito, and Musha, Atsushi, Minami-ashigara, Japan, for “apparatus capable of determining deviation amount between magnetic head and magnetic tape based on reading servo pattern.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A magnetic tape apparatus, in which a tilt cos .theta. of the hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation by STEM is 0.85 to 1.00, a reading element unit includes a plurality of reading elements each of which reads data by a linear scanning method from a specific track region including a reading target track in a track region included in the magnetic tape, an extraction unit performs a waveform equalization process according to a deviation amount between positions of the magnetic tape and the reading element unit, with respect to each reading result for each reading element, to extract data derived from the reading target track from the reading result, and the deviation amount is determined in accordance with a result obtained by reading of the servo pattern included in the magnetic layer by a servo element.”

The patent application was filed on June 28, 2019 (16/456,965).

Magnetic tape apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,706,875) developed by Kasada, Norihito, Ozawa, Eiki, and Musha, Atsushi, Minami-ashigara, Japan, for a “magnetic tape apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A magnetic tape apparatus includes a magnetic tape, a reading element unit and an extraction unit, in which 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 of the magnetic tape at a photoelectron take-off angle of 10 degrees is equal to or greater than 45 atom %, and the extraction unit performs a waveform equalization process according to a deviation amount between positions of the magnetic tape and the reading element unit, with respect to each reading result for each reading element, to extract data derived from the reading target track from the reading result.”

The patent application was filed on June 28, 2019 (16/456,831).

Recording tape cartridge, barcode reading
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,699,173) developed by Kagawa, Yusuke, Kanagawa, Japan, for “recording tape cartridge, barcode reading system, and barcode reading method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A recording tape cartridge includes a case configured by first and second halves being joined to each other first and second peripheral walls are butted against each other and stores a reel, a label surface formed of a first half label surface of the first peripheral wall and a second half label surface of the second peripheral wall on a side opposite to a loading direction of the case to a drive device and that allows a barcode label with a one-dimensional or two-dimensional barcode to be attached thereto, and a reference surface formed on a bottom plate and is used for positioning the case in a thickness direction in a case of being loaded into the drive device. The first or second half label surface is inclined at one degree or more with respect to a vertical plane perpendicular to the reference surface in a side view.”

The patent application was filed on July 30, 2019 (16/525,615).

Magnetic tape apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (10,692,528) developed by Ozawa, Eiki, Kasada, Norihito, and Musha, Atsushi, Minami-ashigara, Japan, for a “magnetic tape apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A magnetic tape apparatus, in which full widths at half maximum of spacing distribution measured by optical interferometry regarding a surface of a 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 15.0 nm, a difference between spacings measured by optical interferometry regarding the surface of the magnetic layer before and after performing the vacuum heating is greater than 0 nm and equal to or smaller than 12.0 nm, and the extraction unit performs a waveform equalization process according to a deviation amount between positions of the magnetic tape and the reading element unit, with respect to each reading result for each reading element, to extract data derived from the reading target track from the reading result.”

The patent application was filed on June 28, 2019 (16/456,459).