| 摘要 |
A tape cassette loading tape recorder in which a multi-track magnetic tape provided with a plurality of tape tracks may undergo an automatic change in the direction of tape travel and head channels may be switched over from one to the other according to the directional change of tape travel. The tape recorder includes a pair of capstan shafts adapted to alternately drive the tape in opposite directions of tape travel, and a movable base plate having thereon a rockable operating lever to bring alternately any one of pinch rollers into engagement with its associated capstan shaft, a magnetic head provided with head channels, a head channel selecting switch means, and a tape-end detecting switch means. The movable base plate, upon loading of the cassette on the tape recorder, moves forwardly towards the cassette thereby making tape-to-head engagement to make the tape recorder ready for recording and play-back operation. On the contrary, the movable base plate, upon completion of recording or play-back for all tape tracks, moves away from the tape cassette which is in turn released from a co-operating relation with the tape recorder. The tape recorder is further provided with a cassette loading means which is manually or automatically movable from a non-operative position to an operative position or vice versa. In addition, there are provided in the tape recorder a cam mechanism to control the operational sequence of the tape recorder elements as described above, and another cam mechanism to control the movement of the cassette loading means, both of mechanisms being electrically actuated by loading of the tape cassette to the tape recorder.
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