US 12,347,457 B2
Cartridge including magnetic tape including magnetic layer including protrusions on surface thereof
Minoru Yamaga, Tokyo (JP); and Yuji Iwahashi, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 18/284,223
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Mar. 31, 2022, PCT No. PCT/JP2022/016735
§ 371(c)(1), (2) Date Sep. 26, 2023,
PCT Pub. No. WO2022/211066, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-062464 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0170019 A1, May 23, 2024
Int. Cl. G11B 23/027 (2006.01); G11B 5/008 (2006.01)
CPC G11B 23/027 (2013.01) [G11B 5/00813 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A cartridge comprising:
a reel that has conductivity;
a magnetic tape that is wound around the reel; and
an elastic member that has conductivity,
wherein the reel has a reel gear that meshes with a drive gear, and
the elastic member is configured to be able to be biased toward a conductive portion included in a spindle of a drive when the reel gear meshes with the drive gear, and
wherein the magnetic tape includes a substrate, an underlayer, and a magnetic layer in order,
the magnetic layer includes magnetic powder and carbon, and
the magnetic layer has, on a surface thereof, protrusions configured of the carbon and an average height of the protrusions is 12 nm or less.