Flight Time Compensation for a Print Hammer
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-12
As seen in Fig. 1, a pole 10 is part of the magnetic stator of an electromagnetic actuator of a print hammer. Armature 11 is part of or connected to an impact element of the print hammer. Operating coil 12 is wound on a conductive bobbin 13. Induced eddy currents in the conductive bobbin 13 generate secondary flux which varies with temperature, thus compensating for temperature-caused flight time variations.