| 摘要 |
PURPOSE:To enable the component parts of a printing head to be easily replaced, by a method wherein a wire with which printing is preformed, a component composed of a guide system for supporting to guide it, and a main body component equipped with an electromagnetic system and an armature working part making the wire actuate are combined with each other in a freely detachable manner. CONSTITUTION:A wire guide system component 1 is attached to an electromagnetic working system component 2 via a hole 11. A yoke 8 sucks an armature 9 by applying current to a coil 6, and the armature 9 pushes a dot wire 3 out leftward to perform a printing. When the wire guide system component 1 breaks, it is extracted from the electromagnetic working system component 2 to be replaced for the other component 1. Since a stroke of the armature 9 is determined by a positional relation of a stopper 10 and a frame 7, even though the wire guide system component 1 is replaced, the stroke of the armature 9 is not affected. Therefore, the replacement by a component can be performed by a user himself to result in a low cost. |
