| 摘要 |
A recording tape cartridge has a rectangular case which rotatably accommodates a single reel on which a recording tape is wound, an opening which is formed in the case and is for pulling-out of a leader member attached to an end portion of the recording tape, a shielding member for opening and closing the opening by sliding, and an urging member for urging the shielding member in a direction of closing the opening. A supporting portion, which supports the urging member in a cantilevered state, is formed at a portion for attachment of the urging member, which portion for attachment is provided at the shielding member.
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