| 摘要 |
A recording tape cartridge has: a case rotatably accommodating a reel on which a recording tape is wound; a reel area rib provided at an inner surface of the case, and defining a range in which the reel is accommodated; and a contact preventing mechanism which is provided at an inner surface of the case, is positioned in a reel hub forming the reel, and prevents contact between the reel area rib and the reel.
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