| 摘要 |
<p>PURPOSE:To reduce the nember of plunger solenoids by letting the suction actuation time of the plunger solenoids differ and changing over recording and reproducing with the same mode changeover mechanism. CONSTITUTION:When a recording mode changeover switch is turned ON, plungers 1, 3 are energized approximately simultaneously, but the energizing time of the plunger 1 has been set longer than that at the reproducing mode changeover, hence its suction rod 1a is also sucked for a longer time. Since this causes its pin 79 to turn a changeover lever 77 counterclokwise, a recording-reproducing selection lever 73 is turned counterclockwise by a spring 75 and its one end 73a is entered within the locus of the pin 61 of a mode changeover lever 58 and is thereby maintained for a specified time. On the other hand, when the suction rod 3a is sucked as the plunger 3 is energized, the pin 61 of the lever 58 abuts against one end 73a of the lever 73 and pushes this upward and therefore the lever 73 causes the recording- reproducing changeover lever 71 to set a recording-reproducing changeover switch 82 at the recording state. Thereby, the number of the plunger solenoids is reduced.</p> |
