Patent ID: 7055773

Claim:
A tape cartridge which is insertable at a tape drive, the tape drive being provided with an opening member which is operably engageable with the tape cartridge at a time of insertion of the tape cartridge and carrying out at least one of reading and writing of data, the tape cartridge comprising: a case housing a reel of tape; a tape access opening formed in the case; a covering member which is reciprocally moveable along a circular arc-form movement path between a closed position for closing the tape access opening and an open position for opening the tape access opening; and a plurality of guide portions for guiding the reciprocal movement of the covering member, wherein part of the plurality of guide portions is cut away to form a cut-out portion, through which a leader member attached to an end portion of tape can move in and out of the cartridge, and chamfering is applied to form a taper surface at an end portion at the cut-out portion of at least one guide portion of the plurality of guide portions, which end portion faces the tape access opening, for smooth guiding of the covering member, wherein the end portion is provided at the tape access opening.