| 摘要 |
A recording tape cartridge which can prevent inclination of a case relative to a loading direction when a door is moved in an aperture opening direction by an operation of loading the cartridge into a drive device. The aperture is closed by a door provided at a corner portion between a front wall and a right wall. An engaging protrusion fixed at the drive device is engaged with an operation protrusion of the door by the operation of loading the cartridge into the drive device in an arrow A direction, and the aperture is opened. At this time, an engaging member provided at a bucket which moves in the arrow A direction with the case engages with an engagement surface of a cell retention notch provided at a left end portion of the case. Thus, torque that acts on the case in accordance with opening of the aperture is counteracted.
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