| 摘要 |
<p>PURPOSE:To simplify an electric control system by processing operations from detection of running up to judgement and excecution of an FF direction only with mechanial mechanisms to make electronic control unnecessary. CONSTITUTION:An FF link 3, which has an FF pin 1 in the end part and has a supporting shaft 2 in the center part, and a mode plate 8 which is moved left as well as right by movement in forward and reverse directions of a roller change plate while interlocking with this plate are provided, and right and left arms 5 and 4 which have FF shafts 7 and 6 at tips are provided freely turnably on both of right and left sides of the FF link, and they are moved right and left in the forward side and the reverse side in accordance with the mode plate 8. Pressing parts 18a-21a of right and left guide holes 18-21 of one of a quick traversing lever 16 and a rewinding lever 17 are turned inside, and slide parts 18b-21b of them are turned outside, and those of the other lever are turned oppositely, and right and left shafts are inserted to guide holes; and when the same lever is pressed, the FF shaft which the lever presses is variable in accordance with the moving position in the forward side and the reverse side of the FF shaft, and moving directions of the FF link and the FF pin are changed in accordance with the running direction of a tape.</p> |
