| 摘要 |
PURPOSE:To obtain the thin type printing head carrying out impact printing by a method wherein an elastic component is distorted by fixing one end thereof and attracting the other end with a magnet and the attracting force is deined by applying electricity to a demagnetizing coil when printing. Then, the hammer pin at the other end part of the elastic component is released. CONSTITUTION:The clamp stands 12 fixing plate springs 11 are alternately arranged at the intermediate positions of the tooth parts 140a, 140b... of a yoke, that is, the attracting part of the plate spring 14. The plate springs 14 are so arranged that the free ends 141a, 141b... and the fixed ends 142a, 142b... exist on the straight line and the fixed ends 142a and 142b... of the neighbouring plate springs 140a and 140b... are opposite to each other. The free ends 141a and 141b... are arranged on the opposite sides by putting the fixed ends between themselves. Therefore, the plate spring 140a and the plate spring 140b are fixed to the clamp stand 121a with a clamp screw 17a via a clamp plate 16 at one position. Plate spring 140c and 140d are fixed to a clamp stand 121c with a screw 17c via the clamp plate 16 and thus, the printing head the piece numbers of the parts and the assembly man-hour of which are decreased, is constructed. |
