| 摘要 |
<p>PURPOSE:To prevent deformation of a tape and a pinch roller, by constituting so that the pinch roller is detached from a capstan and a magnetic head is detached from the tape, in case when a power source switch is cut off in the course of recording or reproducing of the tape. CONSTITUTION:When a power source switch 37 is cut off in the course of recording and reproducing of a tape, a transistor maintains a conducting state by a capacitor in a tape eject controlling circuit 40, a relay switch remains conducting, and electric power is supplied from a power source 38. Therefore, electromagnetic plungers PLN1, PLN2 are energized, a microcomputer IC1 is continuously energized by electric power through a regulator REG, and a line 32 obtains a low level. Accordingly, a forced eject switch S of a key input device KM conducts, the computer IC1 energizes PLN2, detaches a pinch roller from a capstan, also detaches a magnetic head from a tape in the cassette, and PLN1 is energized and ejects the tape to the outside of a device.</p> |
