| 摘要 |
<p>PURPOSE:To prevent noise and picture bend by suppressing tape oscillation in the tape exit part of a rotating drum to improve the head contact. CONSTITUTION:A projecting part 3a as an independent body is arranged in the vicinity of the tape exit part of a lower drum 3, and a taper member 15 is arranged on the inside of the lower drum 3, and the projecting part 3a and the taper member 15 are unified with a driving member 16 between them, and a spring 17 is set around the driving member 16 so that the taper member 15 is pressed inward. An adjusting screw 18 is provided for the lower drum 3 so that it comes into contact with the taper member 15 form below, and the adjusting screw 18 is turned to adjust the extent of projection of the projecting part 3a to an optimum value while observing the head output, the bend of picture, the tape noise, or the like in the tape running state. Thus, the noise and the bend of picture are prevented independently of the variance of drum assembly adjustment.</p> |
