Impact printer actuator using magnet and electromagnetic coil and method of manufacture.

摘要

A print actuator (10) for a dot matrix printer. The actuator has a stator with a frame (12), at least two ferromagnetic poles (14, 16) and at least one permanent magnet (18); and at least one electromagnetic coil (20) surrounding the magnet. The magnet can generally hold an armature (28) in a home position by its magnetic flux (34) until the coil (20) is energized at which point the magnetic flux of the magnet (18) is neutralized by the magnetic flux of the coil and the armature (28) is substantially released of influence from the magnet's hold.