| 摘要 |
PURPOSE:To shorten the return time of an armature by a repulsive force thus performing high-speed printing by fixing a needle to an armature integrally and regulating the position of a magnetic suction direction by the drive part of the armature using a stopper. CONSTITUTION:The base of an armature 23 opposed to a core 21 is mounted to a yoke 22 in a freely movable fashion, and the operating position of a direction where a suction by the core 21 of each armature 23 occurs is regulated by a collision with the core 21. A needle 24 is fixed at the tip of these armatures 23. If the coil 20 is energized according to a printing signal, the armature 23 is sucked by the core 21. However, the operation of the armature 23 in a suction direction stops by the collision of the armature 23 with the core 21. Since both are made of metal, the core 21 which operates as a stopper gives a repulsive force in a return direction to the armature 23. |
