PURPOSE: To provide an inexpensive bearing part which is excellent in wear- proof properties, a mechnaical strength and heat resistance, by a method wherein a polyphenylenesulphite resin mixed with carbon fiber is uses as a material, and the part can be monolithically molded by combining together a nose part.
CONSTITUTION: Based on 100 part a polyphenylenesulphite resin, 5W30 part carbon fiber is mixed. The resin composition is used as a material, and using a mold for injection molding, a nose part 3 and a bearing part 2 are monolithically injection-molded to form a required bearing part 2 of a print head. Wires are pierced through pores in the obtained bearing part 2, which in turn, is mounted to a magnet, and an armatrue to form a print head, and this enables to obtain a print head which prevents the occurrence of deformation due to rise in temperature and the damage of the wires owing to the friction of the bearing part 2.
KOBAYASHI TOMIO
SUZUKI HITOSHI
