Patent ID: 6848843
Filing Date: 2005-02-01
Classification: B41J

Abstract:
1. A wire dot printer head comprising: a plurality of armatures which respectively support printing wires and respectively have support shafts each functioning as a rotational center; a yoke which has a plurality of cores respectively wound by coils, and holds the support shafts of the plural armatures in such a manner that the plural armatures are respectively opposed to the cores; an armature spacer mounted on the yoke, which has a plurality of cutouts for accommodating the support shafts of the plural armatures, so that the plural armatures are allowed to swing without restraint, and holds the support shafts of the plural armatures with the yoke; a pressing member mounted on the armature spacer, which is formed so as not to interfere with swinging motion of the plural armatures and holds down the support shafts of the plural armatures; and an abrasion preventive member provided between the armature spacer and the pressing member, which is formed so as not to interfere with the swinging motion of the plural armatures, and surrounds an outer circumference of the support shafts of the plural armatures.