US 12,406,692 B2
Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus
Norihito Kasada, Minamiashigara (JP); Nobuhito Onozuka, Minamiashigara (JP); Junya Sawada, Minamiashigara (JP); and Ryosuke Yumiyama, Minamiashigara (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Jun. 28, 2024, as Appl. No. 18/758,432.
Claims priority of application No. 2023-107623 (JP), filed on Jun. 30, 2023.
Prior Publication US 2025/0014599 A1, Jan. 9, 2025
Int. Cl. G11B 5/73 (2006.01); G11B 5/588 (2006.01)
CPC G11B 5/736 (2019.05) [G11B 5/588 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A magnetic tape comprising:
a non-magnetic support; and
a magnetic layer containing a ferromagnetic powder,
wherein a core void volume Vvc specified in ISO 25178 on a surface of the magnetic layer is 1.200 nm3 or more and 3.000 nm3 or less, and
standard deviation σ of the Vvc in a width direction of the surface of the magnetic layer is 0.120 nm3 or less.