| 摘要 |
PURPOSE:To reduce cost by forming a guide frame having a guide hole for guiding the tip of printing wire and an insertion hole for a fixture which aligns printing wire in the guide hole, by using nylon synthetic resin including glass fiber. CONSTITUTION:When a magnet coil 4 is energized, a magnetic flux by this magnet coil 4 cancels a magnetic flux by a ring permanent magnet 3 to allow split pieces 7a installed on a core 2 in a deviated position to be released from the core 2. Consequently, printing wire 9 fixed to an armature 8 protrudes from a guide frame 13 to press ink ribbon against printing paper strongly. Thus dots are printed on printing paper. The guide frame 11 is molded using synthetic resin such as nylon, so that it becomes light-weight and saves man- hours for assembly. Further, wire guides which are formed as a separate component by using costly precious stones are no longer required by adding fiber glass to the guide frame of nylon for reinforcement. |
