MAGNETIC TAPE RECORDING AND REPRODUCING APPARATUS

摘要

A magnetic tape recording and reproducing apparatus uses a cassette having a pressure roller near one corner with an aperture in one adjacent edge for a drive roller to engage the tape and an aperture in the other adjacent edge for the tape to engage a transducing head. The drive roller and head are fixed in position and a spring presses the cassette towards the drive roller, the pressure on the pressure roller also serving to retain the cassette and locate it against fixed stops. The head has projections for aligning the tape and determining the position of the cassette. The head position is referenced to the casing by standing on a surface of the casing and being held in place by resilient arms secured to the casing. The head is connected to a read-write circuit using a push-pull amplifier powered by two current sources. Any one of a plurality of such apparatus can be selected using a chain of D-type flip-flops (one per apparatus) and applying a number of clock pulses corresponding the apparatus to be selected.