Patent ID: 7021578

Claim:
A tape cartridge which is insertable at a tape drive which includes a rotating member and carries out at least one of reading and writing of data, the tape cartridge comprising: a reel inside the tape cartridge, the rotating member of the tape drive being engageable with the reel at a time of insertion of the tape cartridge, for transmitting rotary driving force to the reel; a brake member having a protruding portion, the brake member being reciprocally movable between a locking position for prohibiting rotation of the reel and an unlocking position for enabling rotation of the reel; and a release pad having a protruding portion, the release pad being capable of engaging with the rotating member and abutting against the brake member for moving the brake member to the unlocking position, wherein a rubbing surface, which is provided on the protruding portion of the brake member and abuts a rubbing surface provided on the protruding portion of the release pad, is formed of metal and includes a convexly curved surface with a spherical radius of at least 3 mm, and the rubbing surface of the release pad is formed of resin and is formed as a flat surface.