| 摘要 |
A printing head for an impact dot printer has a print wire (3) which is mounted on a lever (14) and which is selectively driven by means of an electro-magnetic arrangement. The electro-magnetic arrangement comprises a respective magnetic circuit (1, 10, 16; 2, 11, 17) arranged to apply a force on each side of the axis of rotation of the lever. The distance between the axis of the lever and the print wire is greater than the distance between the axis and the point of application of the force applied by the magnetic circuit on the opposite side of the axis. |
