| 摘要 |
PURPOSE:To prevent the attraction of an armature to stopper member by utilizing the irregularities of the surface of a porous spacer and the absorptive power of oil, and to obviate the missing of dots by pushing the armature against the stopper member through the spacer. CONSTITUTION:A plunger 2 is fixed to an armature 1, and a rotational fulcrum section 1a is pushed by a fulcrum spring 7 and the armature can be turned. A wire 8 for printing is pushed against one end of the armature 1 by a return spring 9, and the tip of the wire 8 for printing can be projected from a guide 10 by driving the armature 1. Magnetic flux generated by a coil 3 wound on a core 4 passes through a magnetic circuit composed of the core 4, a side yoke 5 and the plunger 2. An ink ribbon 11 and recording paper 12 are mounted between the wire 8 for printing and a platen 13. The armature 1 and the wire 8 for printing are pushed against a stopper 14 through a porous spacer 15 by the return spring 9, and held at the positions of stand-by. |
