Patent ID: 6983908

Claim:
A recording tape cartridge comprising: a tape; a reel having a reel hub on whose outer periphery the tape is wound, the reel hub having a cylindrical recess portion; a case which accommodates the reel such that the reel is rotatable; a braking member able to move between a locking position at which the braking member prohibits rotation of the reel, and a non-locking position at which the braking member permits rotation of the reel, the braking member being provided within the cylindrical recess portion of the reel hub; and a reinforcing ring fit in the cylindrical recess portion of the reel hub, and being a member separate from the reel hub, wherein the reinforcing ring is a cylinder which is shorter than the cylindrical recess portion of the reel hub, and the reel hub and the reinforcing ring have shapes for holding the reinforcing ring at a top end portion of the reel hub.