| 摘要 |
<p>PURPOSE:To realize the titled mode switching mechanism simple in constitution, can be miniaturized, and improved in sureness in operation, by detecting the previous stage before reaching a desired operation mode by means of an operation mode switching section and controlling the rotating speed of a motor by switching. CONSTITUTION:When an operation mode change-over operator is operated and a rewinding mode signal is inputted under a stop mode, a microcomputer 33 supplies a prescribed motor terminal voltage V to a motor 11 and rotationally drives a cam gear 20 in a prescribed directon. As the cam ger 20 rotates, the 1st, 2nd, and 3rd cams 201 and 202 control the switching of the operation mode switching section of a tape tension servo mechanism 23, reel base braking mechanism 24, pinch roller operating mechanism 26, etc. When the microcomputer 33 detects a quick-forwarding mode position which is one stage before a rewinding mode position, the computer 33 controls the terminal voltage V of the motor 11 so as to make the voltage V lower within the extent, within which the voltage V does not become lower than its starting voltage V1, and once lowers the rotating speed of the motor 11. When detecting the next rewinding mode position thereafter, the computer 33 cuts off the supply of the motor terminal voltage V and stops the motor 11.</p> |
