MAGNETIC TAPE RECORDING AND REPRODUCING APPARATUS

摘要

A magnetic tape recording and reproducing apparatus uses a cassette (2) having a pressure roller (4) near one corner with an aperture in one adjacent edge for a drive roller (12) to engage the tape (1) and an aperture in the other adjacent edge for the tape to engage a transducing head (10). The drive roller (12) and head (10) are fixed in position and a spring (14) presses the cassette (2) towards the drive roller (12), the pressure on the pressure roller (4) also serving to retain the cassette (2) and locate it in against fixed stops (22). The head (10) has projections (25, 26) for aligning the tape (1) and determining the position of the cassette (2). The head position is referenced to the casing by standing on a surface (11) of the casing and being held in place by resilient arms secured (31) to the casing. The head (10) 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.