| 摘要 |
A magnetic tape cassette including four rotatably supported guide rollers 40, 40'', 41, 41' in place of conventional fixed pins to assure positive biasing correction of a travelling tape, and mating insert tabs 46 and elongated slots 47 disposed on the raised edges of the upper and lower cases 32, 33 of the cassette to increase the rigidity of the cases and decrease strains, and to accurately maintain the parallelism of the reels and the guide rollers.
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