| 摘要 |
PURPOSE:To contrive a high-speed printing operation without increasing a production cost, by a method wherein, surfaces of an armature and a magnetic circuit member are opposed to each other through gaps and disposed approximately parallel to a printing wire. CONSTITUTION:Respective contact surfaces 36a, 36b, 28b, 29a of an armature 36 and a magnetic circuit member are opposed to each other through gaps 37, 38, which are in contact with the both ends of the armature 36, and disposed approximately parallel to a printing wire 12. As a result, a driving force is so added to the armature 36 that a torque to a shaft body 35 is added to the both ends of the armature 36. Therefore, the shaft body 35 having a large spring force can be twisted without the need for considerably reducing the gaps 37, 38 in thickness to obtain a large magnetic flux. Accordingly, there is no need for remarkably enhancing the dimension accuracies of component parts and assemblies, which results in a high-speed printing operation free from the rise of a production cost. |
