| 摘要 |
PURPOSE:To uniformly regulate the densities of dot print by using a system in which one end of a plate spring having a printing pin on its other end is held on the upper end of a fixed plate spring in such a way as to enable the contact holding portion to move back and forth while being regulated. CONSTITUTION:A plate spring 50 having a printing pin 6 on its tip is held attractingly on a magnetic circuit containing a permanent magnet 1, a releasing coil 4 provided in the magnetic cicuit is excited, the plate spring 50 is flied by the spring force of the plate spring 50, and the printing pin 6 is collided on a paper for printing. In such a printer, one end of the plate spring 50 serving as a printing hammer is contacted with and held on the upper end of a fixed plate spring 10 in such a way as to enable the contact holding portion (patch plate 11) to regulatively move toward the moving direction of the printing pin 6 by a regulating screw 13. By this, the deflection of the plate spring 50 can be adjusted. Also, the upper end of the fixed plate spring 10 is attached to the lower end of a yoke 3. |
