| 摘要 |
PURPOSE:To inexpensively provide a printing head having high reliability and excellent in high speed operation, by integrally molding a plurality of armatures having spring parts along with a ring shaped plate. CONSTITUTION:In the printing head used in a dot martix printer, an armature spring disc 2 is integraly molded from a disc having a ring-shaped projection A concentrically molded thereto by fine blanking and, in order to enhance the rigidity of the leading arm part of an armature, a projection 2c is further provided to the armature by projecting processing. The armature spring disc 2 has a ring-shaped plate and a plurality of armatures radially arranged so as to direct the leading ends thereof to the center of the ring-shaped plate and connected to the ring-shaped plate at the rear ends thereof through spring parts. All of the armatures, the spring parts and the ring-shaped plate are molded from an integral plate comprising a magnetic material having springiness. |
