FujiFilm Assigned Four Patents

Recording tape cartridge
FujiFilm Corp, 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).

Magnetic tape with particular refractive index characteristics
FujiFilm Corp, Tokyo, Japan, has been assigned a patent (11,145,325) developed by Kasada, Norihito, Minami-ashigara, Japan, for “magnetic tape with particular refractive index characteristics, magnetic tape cartridge, and magnetic tape apparatus.“

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 a total thickness of the magnetic tape is equal to or smaller than 5.30 .mu.m, the magnetic layer has a servo pattern, a center line average surface roughness Ra measured on a surface of the magnetic layer is equal to or smaller than 1.8 nm, and an absolute value .DELTA.N of a difference between a refractive index Nxy of the magnetic layer, measured in an in-plane direction and a refractive index Nz of the magnetic layer, measured in a thickness direction is 0.25 to 0.40, a magnetic tape cartridge and a magnetic tape apparatus including this magnetic tape, a magnetic tape cartridge and a magnetic tape apparatus including this magnetic tape.”

The patent application was filed on December 26, 2019 (16/727,181).

Recording and reproducing device, and magnetic tape cartridge
FujiFilm Corp, 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).

Magnetic tape and cartridge
FujiFilm Corp, Tokyo, Japan, has been assigned a patent (11,087,787) developed by Kasada, Norihito, Ozawa, Eiki, 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 L.sub.99.9-L.sub.0.1 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 an absolute value .DELTA.N of a difference between a refractive index Nxy of the magnetic layer, measured in an in-plane direction and a refractive index Nz of the magnetic layer, measured in a thickness direction is 0.25 or more and 0.40 or less.”

The patent application was filed on January 30, 2020 (16/777,411).