US 11,869,552 B2
Magnetic tape, magnetic tape cartridge, and magnetic tape device
Norihito Kasada, Minamiashigara (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Sep. 27, 2022, as Appl. No. 17/953,953.
Claims priority of application No. 2021-158783 (JP), filed on Sep. 29, 2021; and application No. 2022-135815 (JP), filed on Aug. 29, 2022.
Prior Publication US 2023/0110514 A1, Apr. 13, 2023
Int. Cl. G11B 5/55 (2006.01); G11B 5/735 (2006.01); G11B 5/65 (2006.01); G11B 5/78 (2006.01)
CPC G11B 5/5504 (2013.01) [G11B 5/658 (2021.05); G11B 5/7356 (2019.05); G11B 5/7358 (2019.05); G11B 5/78 (2013.01)] 16 Claims
 
1. A magnetic tape comprising:
a non-magnetic support; and
a magnetic layer containing a ferromagnetic powder,
wherein a tape thickness of the magnetic tape is 5.2 μm or less,
in an environment with a temperature of 32° C. and a relative humidity of 80%,
a frictional force F45° on a surface of the magnetic layer with respect to an LTO8 head measured at a head tilt angle of 45° is 4 gf to 15 gf, and
a standard deviation of a frictional force F on the surface of the magnetic layer with respect to the LTO8 head measured at each of head tilt angles of 0°, 15°, 30°, and 45° is 10 gf or less.