| 摘要 |
At a recording tape cartridge, an opening, which is directed forward and toward a side, is formed by cutting off a corner portion at a side of loading the recording tape cartridge into a drive device. A leader pin and a magnetic tape are pulled out along a shortest path from the opening. The opening is opened and closed by a door, which is curved in an arc-shape, rotating so as to circle around outer sides of pin stands and a reel so as to wind its way past an outer side of a first screw boss and an inner side of a second screw boss which are positioned at both edge portions of the opening, without the door jutting out from a locus of movement which runs along a curved configuration of the door.
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