CHUCK FOR MECHANICAL PENCIL AND CHUCK RING

摘要

PROBLEM TO BE SOLVED: To obtain a chuck for a mechanical pencil which is low in cost and excellent in adhesion and can be plated to improve performance or a chuck ring. SOLUTION: Electroless plating is applied to at least the core holding part 1a of the chuck 1 for the mechanical pencil or at least the fastening part 2a of the chuck ring 2.