| 摘要 |
PURPOSE:To make a slit adjusting mechanism compact, and to adjust a slit with a high accuracy by turning a planet gear by an external operation and making it interlock with one of rotary plates, so that a width of the slit can be adjusted. CONSTITUTION:When an arm 8 whose one end is fitted loosely to a revolving shaft 7 of a platen gear 5, namely, the center shaft of a composite gear 2 is made operable manually or automatically through a simple transfer mechanism from the outside, and the arm is turned round the center axis of the composite gear 2, the second planet gear 5 revolves and moves, turning centering around a sun gear 4a, and an internal gear 6 engaged to the second planet gear 5, and the second rotary plate 10 are rotated by a prescribed quantity, by which a slit position of the second rotary plate 10 against a slit of the first rotary plate 9 is varied relatively, and the slit width is varied. In this way, a slit adjusting mechanism can be contained compactly, and a speed of a shutter bead can be adjusted exactly by an angle operation of a high accuracy. |
