ARMATURE, WIRE DOT PRINTER HEAD AND WIRED DOT PRINTER

摘要

PROBLEM TO BE SOLVED: To obtain durability enduring high-speed printing by realizing a weight reduction and preventing stress from concentrating in an armature. SOLUTION: The armature is structured so as to disperse stress acting on an arm 9 by providing a magnetic circuit forming member 11 having a protrusion 11a protruding in the direction of extension of a printing wire 10 from the arm 9 in the arm 9 formed into a long plate and supporting the end of the printing wire 10, positioned at the printing wire 10 side other end thereof and forming a first slope 9e gradually sloping in the direction of extension of the printing wire 10 toward the protrusion 11a and a recessed first curved surface 9f bending inward at a prescribed first curvature and arriving at the protrusion 11a, continuously from the slope 9e in a first end face 9A on the protrusion section 11a side in the arm 9. COPYRIGHT: (C)2006,JPO&NCIPI