| 摘要 |
<p>PURPOSE:To eliminate the need for a plunger with a large suction force and to simplify a structure by executing the sliding and displacing with the plunger to execute the suction action when a non-magnetic body part is detected and executing the termination detecting action with the same condition as that at the time of stopping the rotation of a reel shaft. CONSTITUTION:When for a plunger 17, the non-magnetic body part of a reader tape, etc., provided at the edge part of a magnetic is detected, a power source is supplied and a suction action condition is obtained. A turning lever 18 fitted turnably by a shaft 19 and turned and energized in the clock-wise direction by a spring 20 is turned and displaced in the counterclockwise direction by the suction action of the plunger 17, abutted to a changing over piece 3 formed at a sliding member 1 and has the action to displace a sliding member 1 in the B direction of an arrow which is the second position. Thus, the termination detecting action by the detection of the non-magnetic body part provided at the edge part of a magnetic tape is executed.</p> |
