| 摘要 |
<p>PURPOSE:To avoid such a case where a tape gets out of its place and twisted or folded by providing a means which separates a reel base from a gear at the motor side. CONSTITUTION:Idler gears 5F and 5R engage reel bases 4F and 4R respectively, and bases 4F and 4R are revolved counterclockwise and clockwise respectively. In this case, the tape sag is eliminated since both bases 4F and 4R are revolved forward in the tape take-up direction respectively. When a motor 1 is reversed, a pulley gear 2 and a power gear 3 set at the motor side are revolved counterclockwise and clockwise respectively. While a power idler gear 11 is revolved counterclockwise, and an oscillating gear 10 is separated from a power gear 6R at the reverse side and has clockwise oscillations. The gear 10 stops before it engages a power gear 6F at the forward side and is revolved clockwise since a position control part 10a of the gear 10 is controlled by a position control member 12. In other words, both gears 6F and 6R are separated completely from the motor 1 when it is reversed.</p> |
