Patent ID: 6994482

Claim:
A wire dot printer head, comprising: plural armatures each having a through hole and a pivot shaft inserted into the through hole for serving as a center of a pivot; plural printing wires positioned parallel to the direction substantially perpendicular to the pivot shaft and provided respectively at the armatures; a yoke that has plural cores, each having a coil wound therearound, and holds the pivot shaft such that the armatures are attracted to the cores; and an armature spacer that has plural guide sections forming a side magnetic path with respect to the armatures and mounted on the yoke for holding the pivot shaft with the yoke; wherein, supposing that each of the saturated magnetic fluxes of the yoke, the armatures and the armature spacer is defined as A, B and C in this order, these components are formed to establish a relationship of A≧B≧C.