Electromagnetic drive mechanism for the printing pin of a print head

摘要

PCT No. PCT/EP90/00193 Sec. 371 Date Sep. 26, 1991 Sec. 102(e) Date Sep. 26, 1991 PCT Filed Feb. 6, 1990 PCT Pub. No. WO90/09286 PCT Pub. Date Aug. 23, 1990.An electromagnetic driving device for driving a print needle of a printer employing an E-shaped magnetic yoke. In order to improve print speed, the armature and arms of the yoke are specifically dimensioned. The precise lengths and widths of the armature and yoke provide an inductive circuit that minimizes both magnetic losses and inductance.