| 摘要 |
A wire-dot printing head has a housing (18) in which a plurality of actuator assemblies (32) are accommodated to drive a plurality of wire elements (66). An annular hollow space (68) may be formed in a side wall of the housing surrounding the actuator assemblies, whereby noise and vibration produced during operation of the actuator assemblies can be effectively damped due to the formation of the annular hollow space. A interior region of the housing may be partially charged with gel-like damping material for damping the noise and vibration, a hollow space being formed in the charged damping material so as to reduce the increase in the inertial mass of the printing head. <IMAGE> |
