| 摘要 |
PURPOSE:To elevate the rigidity of a frame and a needle, to augment the natural frequency of a tilting member and to increase the speed of printing by fixing a pair of leaf springs onto the opposed surfaces of the frame and the needle. CONSTITUTION:Leaf springs 8, 9 are respectively fastened firmly onto the opposed surfaces of a frame 1 and a needle 5, and the rigidity of the frame 1 and the needle 5 is increased. Consequently, the deforming sections of the leaf springs 8, 9 can be limited only among the frame 1, the needle 5 and a holder 11, thus inhibiting the lowering of a displacement expansion rate. The excess vibrations of the holder 11 are removed, and the natural frequency of the whole movable section composed of a tilting member 10 and the leaf springs 8, 9 is increased, thus attaining motion at high speed of the tilting member 11. |
