US 12,322,415 B2
Tape reel with reel hub having expanding outer peripheral regions, tape cartridge, and apparatus for producing tape reel
Takeshi Saito, Tokyo (JP); and Tatsuo Suzuki, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 18/281,714
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Feb. 9, 2022, PCT No. PCT/JP2022/005104
§ 371(c)(1), (2) Date Sep. 12, 2023,
PCT Pub. No. WO2022/196194, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-043930 (JP), filed on Mar. 17, 2021.
Prior Publication US 2024/0161781 A1, May 16, 2024
Int. Cl. G11B 23/037 (2006.01); G11B 5/78 (2006.01); G11B 15/32 (2006.01); G11B 23/107 (2006.01)
CPC G11B 23/037 (2013.01) [G11B 5/78 (2013.01); G11B 15/32 (2013.01); G11B 23/107 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A tape reel, comprising:
a first flange;
a second flange; and
a reel hub that has a cylindrical shape and includes a first end portion formed integrally with the first flange, a second end portion to which the second flange is bonded, and an outer peripheral surface on which a magnetic tape is wound,
the outer peripheral surface of the reel hub having
a first outer peripheral region expanding in diameter from the first end portion toward the second end portion, and
a second outer peripheral region expanding in diameter from the first outer peripheral region across the second end portion and forming a ridge line portion having a shape projecting radially outward of the reel hub on a boundary between the second outer peripheral region and the first outer peripheral region,
wherein the ridge line portion is located closer to the first end portion than a center of a height of the reel hub.