Patent ID: 7306182

Claim:
A recording tape cartridge comprising: a case which accommodates a single reel, around which a recording tape is wound, such that the reel is rotatable; an opening formed at a corner portion extending between a front wall and a side wall of the case, the opening being for pulling-out of a leader member which is attached to a distal end portion of the recording tape; and a door which has a bent portion formed in a substantial L-shape in plan view, rotates around a shaft provided at the front wall side, and opens and closes the opening, wherein a plate thickness of the bent portion is larger than all other parts of the door, and a stepped portion is formed at a further end side from the bent portion of the door, wherein the case comprises, a first abutting portion which abuts the door when the door closes the opening, and second abutting portions which abut an end surface of the bent portion at a door distal-end side thereof and an inner surface of the bent portion, when the door which has closed the opening is deflected in a direction of closing the opening, and which do not abut the end surface of the bent portion at the door distal-end side thereof and the inner surface of the bent portion, when the door closes the opening.