Tdk Corporation

Chotaro Kouzu

Morimasa Sasaki

Takateru Satoh

Akio Momoi

Hiroshi Kaneda

A tape reel includes a hub in the shape of a bottomed-cylinder with a disc-like lower flange integrally formed at a lower end thereof and an opening formed at an upper end thereof; and an upper flange that is disc-like, has a center hole formed therein, and has a ring-shaped protrusion formed so as to protrude at a rim of the center hole, the protrusion being fitted into and fixed at the opening of the hub. The upper flange is constructed by forming the rim of the center hole thicker than other parts aside from the rim.

Tape reel and information recording apparatus

A cartridge case of an information recording medium includes a case main body where a guide part is disposed on an inner surface of a top plate, a tape reel that includes a hub in the shape of a bottomed-cylinder and is rotatably enclosed inside the case main body, and a locking member that is guided in a state where rotation is restricted by the guide part, is enclosed within the case main body so as to be capable of moving in a direction toward and away from a base plate of the hub, and restricts rotation of the tape reel. The guide part includes a cylindrical first convex part disposed on the inner surface and a plate-like second convex part disposed on the inner surface. The locking member includes a main part, a cylindrical third convex part that is disposed on the main part and engages the first convex part, and a plate-like fourth convex part that is disposed on the main part and contacts the second convex part to restrict rotation of the locking member.

Cartridge case and information recording medium

A tape cartridge capable of preventing emission of vibrating sounds and occurrence of abrasion at a usage time when a reel hub unit rotates at a high rotating speed. The tape cartridge has a single reel hub unit rotatably accommodated in a case and having its periphery wound with a tape-shaped recording medium, a brake lock member including an engaging portion for engaging a reel hub unit to restrict rotation of the reel hub unit when in non-use, and a flat surface bearing portion provided substantially at a central part of the brake lock member, wherein the central axis of said flat surface bearing portion of the brake lock member is parallel with and offset from the rotating central axis around which said brake release member rotates together with said reel hub unit.

Tape cartridge

A tape reel includes: a hub in the shape of a bottomed-cylinder with a disc-like lower flange integrally formed at a lower end thereof and an opening formed at an upper end thereof; and an upper flange that is disc-like, has a center hole formed therein, and has a ring-shaped protrusion formed so as to protrude at a rim of the center hole, the protrusion being fitted into and fixed at the opening of the hub. The hub includes a plurality of reinforcing ribs that are respectively formed in an up-down direction on an inner circumferential surface of the hub.

Growing community of inventors

Tokyo, Japan

Chotaro Kouzu