| 摘要 |
<p>PURPOSE:To attain a cylinder driving operation, a pinch roller pressing action, an action mode switching action, and a magnetic tape driving action just with use of a cylinder motor and a capstan motor by securing a specific mechanism. CONSTITUTION:A rotary head cylinder 1 is prepared together with a 1st motor 2 which can drive the cylinder 1 in both forward and reverse directions, a capstan 21 which drives a magnetic tape at a constant speed in a coaction with a pinch roller 87, and a 2nd motor 22 which can drive the capstan 21 in both forward and reverse directions. In addition, the transmission means 23-27 are used to transmit the rotational output of the motor 22 together with the action mode switch means 29 and 71 which switch the action mode of a recording/reproducing device with the rotational output of the motor 22, the clutch means 8-11, 41-48, and 51-59 which connect both means 29 and 71 together or separate these means from each other, and a rotational frequency detecting means which detects the rotational frequency of the cylinder 1. Thus it is possible to attain a cylinder driving action, a pinch roller pressing action, an action mode switching action, and a magnetic tape driving action just with use of two motors.</p> |
