FujiFilm Assigned Seventeen Patents

Magnetic tape having controlled dimensions, cartridge, and apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,295,776) developed by Murata, Yuto, Kaneko, Yusuke, and Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape having controlled dimensions, 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 satisfies TDSage+TDSenv-TC.ltoreq.0.30 .mu.m. TDSage is a maximum absolute value of a difference between the servo band interval obtained before a predetermined storage and the servo band interval obtained after the storage, TDSenv is a value calculated by multiplying a difference between a maximum value and a minimum value of the servo band interval respectively obtained under five predetermined environments by 1/2, TC is a value calculated by multiplying TDStens by 0.5 N, and TDStens is a ratio of a change in the servo band interval to a change in tension calculated from the servo band interval respectively obtained under five predetermined environments by applying a plurality of different tensions in the longitudinal direction of the magnetic tape.”

The patent application was filed on January 28, 2021 (17/160,977).

Magnetic tape device, media, and cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,295,763) developed by Kasada, Norihito, Kanagawa, Japan, for “magnetic tape device, magnetic tape, and magnetic tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic tape device, in which a magnetic tape is caused to run between a winding reel and a cartridge reel in a state where a tension is applied in a longitudinal direction of the magnetic tape and a maximum value of the tension is 0.50 N or more, the magnetic tape after running in a state where the tension is applied is caused to be wound around the cartridge reel by applying a tension of 0.40 N or less in the longitudinal direction, and a number distribution A of equivalent circle diameters of a plurality of bright areas and a number distribution B of equivalent circle diameters of a plurality of dark areas in a binarized image of a secondary electron image obtained by imaging a surface of the magnetic layer of the magnetic tape with a scanning electron microscope satisfy predetermined number distributions, respectively.”

The patent application was filed on May 28, 2021 (17/333,019).

Magnetic tape device, media, and cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,289,124) developed by Kaneko, Yusuke, Murata, Yuto,and Kasada, Norihito, Minamiashigara, Japan, for “magnetic tape device, magnetic tape, and magnetic tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic tape device, a magnetic tape, and a magnetic tape cartridge, in which the magnetic tape is caused to run between a winding reel and a cartridge reel in a state where a tension is applied in a longitudinal direction of the magnetic tape and a maximum value of the tension is 0.50 N or more, the magnetic tape after running in a state where the tension is applied is wound around the cartridge reel by applying a tension of 0.40 N or less in the longitudinal direction, and a center line average roughness Ra measured regarding a surface of a back coating layer of the magnetic tape with an atomic force microscope is in a range of 5 to 13 nm.”

The patent application was filed on February 4, 2021 (17/167,589).

Magnetic tape recording and reproducing
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,276,427) developed by Nakao, Toru, Kanagawa, Japan, for “magnetic tape recording and reproducing apparatus and recording and reproducing method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape, a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction, and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.”

The patent application was filed on August 31, 2020 (17/006,917).

Magnetic tape having characterized PSD ratio, cartridge, and recording and reproducing apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,270,822) developed by Tsujimoto, Shinji, Minami-ashigara, Japan, for “magnetic tape having characterized PSD ratio, magnetic tape cartridge, and magnetic recording and reproducing apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape includes a non-magnetic support, a magnetic layer that includes ferromagnetic powder having an average particle volume of 2,500 nm.sup.3 or less on one surface side of the non-magnetic support, and a back coating layer that includes non-magnetic powder on the other surface side of the non-magnetic support, in which the ferromagnetic powder is ferromagnetic powder selected from the group consisting of hexagonal ferrite powder and .epsilon.-iron oxide powder, and a ratio (PSD.sub.5 .mu.m-PSDmag/PSD.sub.10 .mu.m-PSDbc) of the magnetic layer and the back coating layer is in a range of 0.0050 to 0.20. A magnetic tape cartridge and a magnetic recording and reproducing apparatus include the magnetic tape.”

The patent application was filed on February 27, 2020 (16/802,797).

Magnetic tape with characterized servo bands, cartridge, and magnetic tape apparatus
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,270,732) developed by Murata, Yuto, Kaneko, Yusuke, and Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape with characterized servo bands, magnetic tape cartridge, and magnetic tape apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “In the probability distribution calculated from TDSage, TDSenv, and TC, the magnetic tape has the probability P.sub.fail of equal to or less than 0.2%, in which the absolute value of .DELTA.SB exceeds 0.3 .mu.m. TDSage is a maximum absolute value of a difference between the servo band interval obtained before a predetermined storage and the servo band interval obtained after the storage, TDSenv is a value calculated by multiplying a difference between a maximum value and a minimum value of the servo band interval respectively obtained under five predetermined environments by 1/2, TC is a value calculated by multiplying TDStens by 0.5 N, and TDStens is a ratio of a change in the servo band interval to a change in tension calculated from the servo band interval respectively obtained under five predetermined environments by applying a plurality of different tensions in the longitudinal direction of the magnetic tape.”

The patent application was filed on January 28, 2021 (17/161,031).

Single reel magnetic tape cartridge with predefined tape width difference and servo band interval difference
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,270,727) developed by Murata, Yuto, Kasada, Norihito, and Kagawa, Yusuke, Minami-ashigara, Japan, for a “single reel magnetic tape cartridge with predefined tape width difference and servo band interval difference.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “In the magnetic tape cartridge, a tape has a tape thickness of 5.3 .mu.m or less, and a difference W.sub.inner-W.sub.outer between a tape width W.sub.inner at a position of 50 m.+-.1 m from a tape inner end and a tape width W.sub.outer at a position of 50 m.+-.1 m from a tape outer end is 4.1 .mu.m to 19.9 .mu.m as a value measured on 100th day from a date of magnetic tape cartridge manufacture, and a difference G.sub.inner-G.sub.outer between a servo band interval G.sub.inner in a range of 49 m to 51 m from the tape inner end and a servo band interval G.sub.outer in a range of 49 m to 51 m from the tape outer end is -3.9 .mu.m to 0.0 .mu.m as a value measured on 100th day from the date of magnetic tape cartridge manufacture.”

The patent application was filed on March 20, 2020 (16/825,534).

Single reel magnetic tape cartridge with predefined servo band interval difference
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,257,518) developed by Murata, Yuto, Kasada, Norihito, and, Kagawa, Yusuke, Minami-ashigara, Japan, for a “single reel magnetic tape cartridge with predefined servo band interval difference.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Provided is a magnetic tape cartridge of a single reel type in which a magnetic tape is wound around a reel, in which the magnetic tape includes a non-magnetic support and a magnetic layer containing a ferromagnetic powder, and has a tape thickness of 5.3 .mu.m or less, the magnetic layer includes a plurality of servo bands, and a difference (G.sub.inner-G.sub.outer) between a servo band interval G.sub.inner in a range of 49 m to 51 m from a tape inner end and a servo band interval G.sub.outer in a range of 49 m to 51 m from a tape outer end is -3.9 .mu.m to -1.1 .mu.m as a value measured on 100th day from a date of magnetic tape cartridge manufacture.”

The patent application was filed on March 20, 2020 (16/825,360).

Communication device, magnetic tape cartridge unit and manufacturing method thereof, and noncontact management of magnetic tape cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,222,666) developed by Kataoka, Eiichiro, Kanagawa, Japan, for “communication device, magnetic tape cartridge unit and manufacturing method thereof, and noncontact management method of magnetic tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic tape cartridge unit includes a plurality of magnetic tape cartridges stacked in a height direction. Each magnetic tape cartridge includes an antenna coil formed in a substrate, a communication circuit that communicates with a communicatee using power induced by application of a magnetic field from the communicatee to the antenna coil, and a case having a reference plane being a reference in a height direction. The substrate is inclined at an inclination angle of less than 45 degrees with respect to the reference plane. In a case where the plurality of magnetic tape cartridges are stacked in a predetermined orientation in the height direction, the reference planes of the plurality of magnetic tape cartridges are in parallel, and the inclination angles of the substrates relative to the reference planes and positions of the substrates in the reference planes conform among the plurality of magnetic tape cartridges.”

The patent application was filed on February 1, 2021 (17/163,593).

Magnetic tape having characterized back coating layer, recording medium and recording and reproducing device
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,211,087) developed by Ozawa, Eiki, and Kurokawa, Takuto, Minami-ashigara, Japan, for “magnetic tape having characterized back coating layer, magnetic recording medium and magnetic recording and reproducing 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 magnetic layer including a ferromagnetic powder and a binding agent on one surface of the non-magnetic support, and a back coating layer including a non-magnetic powder and a binding agent on the other surface of the non-magnetic support, in which a center line average surface roughness Ra measured regarding a surface of the back coating layer is equal to or smaller than 7.0 nm, and a difference between a spacing S.sub.after measured by optical interferometry regarding the surface of the back coating layer after methyl ethyl ketone cleaning and a spacing S.sub.before measured by optical interferometry regarding the surface of the back coating layer before methyl ethyl ketone cleaning is greater than 0 nm and equal to or smaller than 30.0 nm.”

The patent application was filed on March 28, 2019 (16/368,044).

Magnetic tape having characterized magnetic layer, cartridge, and tape device
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,189,311) developed by Ozawa, Eiki, and Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape having characterized magnetic layer, magnetic tape cartridge, and magnetic tape device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape in which the followings are satisfied, after the magnetic layer is pressed at a pressure of 70 atm. A full width at half maximum of a spacing distribution measured by optical interferometry regarding a surface of the magnetic layer before performing a vacuum heating with respect to the magnetic tape is greater than 0 nm and equal to or smaller than 15.0 nm, a full width at half maximum of a spacing distribution measured after performing the vacuum heating is greater than 0 nm and equal to or smaller than 15.0 nm, and a difference, S.sub.after-S.sub.before) between a spacing S.sub.after measured by optical interferometry regarding the surface of the magnetic layer after performing the vacuum heating with respect to the magnetic tape and a spacing S.sub.before measured before performing the vacuum heating is greater than 0 nm and equal to or smaller than 12.0 nm.”

The patent application was filed on January 30, 2020 (16/777,393).

Magnetic tape reading apparatus capable of synthesizing plurality of reproducing signal sequences
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,189,308) developed by Musha, Atsushi, Kanagawa, Japan, for a “magnetic tape reading apparatus capable of synthesizing a plurality of reproducing signal sequences.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic tape reading apparatus including: a reading head which includes a reading unit disposed at a position corresponding to a single track included in a magnetic tape, a controller which controls the reading unit to read data plural times from a specific range of the single track in a running direction of the magnetic tape by a linear scan method, and a synthesis unit which synthesizes a plurality of reproducing signal sequences obtained by reading data plural times from the specific range by the reading unit.”

The patent application was filed on March 18, 2020 (16/822,132).

Recording device, control, recording, cartridge, and data recording and reproducing
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,183,208) developed by Akano, Yoichi, Kanagawa, Japan, for “recording device, control device, recording method, recording tape cartridge, and data recording and reproducing system.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A recording device, a control device, a recording method, a recording tape cartridge, and a data recording and reproducing system capable of accurately positioning a data recording and reproducing head are obtained. A recording device includes a recording unit that records information on linearity of a servo signal recorded on a magnetic tape included in a recording tape cartridge on an RFID tag included in the recording tape cartridge.”

The patent application was filed on December 9, 2020 (17/116,715).

Magnetic tape cartridge, recording method, and reproducing system using a recording medium including predetermined area for recording defect information
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,183,206) developed by Suzuki, Hodaka, Nakao, Toru, and Akano, Yoichi, Kanagawa, Japan, for “magnetic tape cartridge, recording device, recording method, and data recording, and reproducing system using a recording medium including a predetermined area for recording defect information.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic tape cartridge including: a magnetic tape, and a recording medium including a predetermined area for recording defect information, which is information regarding a defect of the magnetic tape detected in a production process of the magnetic tape. A recording device, a recording method, a data recording and reproducing system, and a data recording and reproducing method are also provided.”

The patent application was filed on September 23, 2020 (17/029,095).

Recording tape cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,145,330) developed by Sumiya, Yosuke, Kanagawa, Japan, for a “recording tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Provided is a recording tape cartridge including: a case that accommodates a reel on which a recording tape is wound and includes a reference surface that serves as a reference in an axial direction of the reel in a case where the case is loaded into a drive device, a noncontact communication medium on which individual information is recorded, the noncontact communication medium being accommodated in the case and having a plate shape, a supporting portion that is formed in the case and supports one surface of the noncontact communication medium except for a lower end portion such that the noncontact communication medium is disposed while being inclined with respect to the reference surface at an angle of approximately 45 degrees, and a groove portion that is formed in the case and accommodates a portion of the lower end portion of the noncontact communication medium. The one surface of the lower end portion of the noncontact communication medium is not in contact with the case.”

The patent application was filed on March 15, 2021 (17/200,923).

Recording and reproducing device, method, and magnetic tape cartridge
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,120,832) developed by Nakao, Toru, Suzuki, Hodaka, and Akano, Yoichi, Kanagawa, Japan, for “recording and reproducing device, recording and reproducing method, and magnetic tape cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A recording and reproducing device includes: a reading unit that reads production information from a recording medium of a magnetic tape cartridge, the magnetic tape cartridge including a magnetic tape, and the recording medium other than the magnetic tape and on which the production information is recorded, the production information being information regarding the magnetic tape obtained in a production process of the magnetic tape cartridge, and a control unit that performs, as an initialization process of the magnetic tape cartridge, control of recording the production information on the magnetic tape and invalidating the production information in the recording medium.”

The patent application was filed on September 16, 2020 (17/022,112).

Recording tape cartridge and barcode label reissuing
FujiFilm Corporation, Tokyo, Japan, has been assigned a patent (11,080,499) developed by Osako, Ryosuke, and Sumiya, Yosuke, Kanagawa, Japan, for “recording tape cartridge and barcode label reissuing method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A recording tape cartridge includes a case that accommodates a reel around which a recording tape is wound and a label that is attached to a label surface formed at a wall surface of the case. The wall surface is located at a side opposite to a direction in which the case is loaded into a drive device. The label includes a first label layer that is attached to the label surface and on which individual identification information is displayed in a two-dimensional code, and a second label layer attached to the first label layer with a peelable bonding force, the second label layer being capable of covering and concealing the two-dimensional code, and the individual identification information being displayed in a barcode on the second label layer. The two-dimensional code is displayed at a central part in a longitudinal direction of the label.”

The patent application was filed on April 8, 2020 (16/842,774).