| 摘要 |
PURPOSE:To drive a plurality of ribbons to respective objective directions by the rotation of the same motor without using a link mechanism or a lever, by providing unidirectional clutches mutually operated to reverse directions to the motor. CONSTITUTION:Each ink ribbon 2 reaches the side of an ink ribbon draw-in part 7 from an ink ribbon supply part 3 through guides 4, 5, 5a, 6 and is wound up by a winding-up part 8. On the other hand, a correct ribbon 10 is adapted to a correct ribbon supply part 11 and a ribbon winding-up part 12 through guides 13, 13a. A drive gear 16 is coaxially provided to the drive shaft 14 attached to and detached from the drive shaft 7a of the ink ribbon draw-in part 7 through a unidirectional clutch 15 while the drive shaft 19 of the correct ribbon winding-up part 12 is provided in coaxial relation to a drive shaft 21 through a unidirectional clutch 20 reversely operated with respect to the clutch 15 to be always meshed with the pinion 18 of a motor 17. |
