| 摘要 |
An apparatus performs recording and/or reproduction of signals by a head of a drum with which a tape-like recording medium is brought into contact while being moved under a fixed tension from a reel engaging a supply reel base to a reel engaging a take-up reel base. An arm retains a tension post which presses against the recording medium, forming a predetermined path to detect a tension thereof. One end of the arm is pivotally supported, and the arm is urged by a spring so as to allow the tension post to elastically press against the recording medium. At least one end of a band brake for loading a braking torque on the supply reel base is locked to the arm. The locking points of both two ends of the band brake are at positions which are substantially symmetrical with respect to a perpendicular bisector of a line connecting a center of the supply reel base when a first recording tape cassette is used to a center of the supply reel base when a second recording tape cassette having a size different from that of the first cassette is used.
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