| 摘要 |
The present invention relates to a magnetic tape cartridge comprising: a cartridge casing; a single reel rotatably housed in said cartridge case, said reel having magnetic tape wound thereon; and a leader pin, coupled with a leading end of said magnetic tape, for leading said magnetic tape; wherein said leader pin has a pin main body equipped with a tape clamp portion, on which the leading end of said magnetic tape is wound, and a clamp member for pinching said magnetic tape to said tape clamp portion, wherein an average surface roughness Rz of said tape clamp portion is within the range of 0.7 µm ‰ Rz ‰ 30 µm.
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