| 摘要 |
<p>PURPOSE:To provide simply the tape running speed difference by exerting a belt tension and a pinch roller pressing force on a capstan of a mechanism at the recording side so as to be a couple of forces at the capstan bearing part. CONSTITUTION:A force is exerted on a flywheel 26 in a tensing direction 40 by a tension of belt 16 and a pinch roller pressing force is exerted to a capstan 25 in a pressing direction 41 from the pinch roller 30. These forces are a couple of forces to bearings 42a, 42b and the friction between the capstan 25 and the bearings 42a, 42b is larger although it does not wear the bearings. Thus, the rotation of the capstan 25 is disturbed and the tape running speed of the 2nd tape running part is slower slightly than the speed of the 1st tape running part. Moreover, since a motor 13 is positioned on a perpendicular bisector of a straight line tying capstans 5 and 25, the same member is used for both belts 15 and 16 when flywheels 6, 26 have the same diameter.</p> |
