| 摘要 |
<p>PURPOSE:To require only one sprocket and to simplify the mechanism of a power transmission part of a motor by driving a pair of loading bases with belts independent of each other and driving these two belts with a common sprocket. CONSTITUTION:When a cassette pack is loaded, loading pins 17a, 17b, 18a, and 18b provided on loading bases 15 and 16 are placed on the inside of a magnetic tape. When a sprocket 46 is driven by a motor M, two belts 41 and 42 are circularly driven, and then, bases 15 and 16 are moved upward along guiding grooves A and B independently of each other. Consequently, the magnetic tape is led out by pins 17a, 17b, 18a, and 18b and wound around a rotary head device 14. Since two belts are synchronously driven with one sprocket independently of each other in this manner, the power transmission mechanism of the motor is simplified.</p> |
