Moving Coil Actuator With Dynamic Control Embedded in a Moving Iron Actuator
Original Publication Date: 1985-May-01
Included in the Prior Art Database: 2005-Feb-18
Using a combined moving iron/moving coil printer armature with a conventional stator provides high speed typical of the moving-iron actuator with the controllability typical of the moving-coil actuator. Two types of high-performance printer actuators, moving iron and moving coil, are common. The moving-iron actuator has low mass, large stroke, high efficiency and speed, but it is not controllable. The moving-coil actuator has excellent control, but it has relatively large mass. Iron segments embedded in the armature act as conductors of a moving, current-carrying coil resulting from the movement of the armature, providing both improved printer performance and a means of dynamic control. A semischematic sectional plan view of the combined moving-iron/moving-coil actuator is shown in Fig.