Recording tape cartridge

A tape drive for carrying out at least one of reading and writing of data at a tape cartridge that includes:

• a case which includes a front wall portion facing in a direction of insertion of the cartridge, a side wall portion substantially parallel to the cartridge insertion direction, and an angled wall portion connecting the front wall portion and the side wall portion and angled relative to the cartridge insertion direction;
• a tape access opening provided at the angled wall portion of 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
• an operation portion provided at the covering member, the operation portion being capable of moving the covering member in an open position direction when engaged with the tape drive by an operation of insertion of the tape cartridge,
• wherein a position in the cartridge insertion direction of a point at which the circular arc-form movement path is closest to the side wall portion of the case, is included in a range, in the cartridge insertion direction, of movement of a point of engagement of the tape drive with the operation portion of the covering member, and
• wherein the tape drive comprises an opening member which is capable of engaging with the operating portion of the covering member and moving the covering member in the open position direction at the time of insertion of the tape cartridge.