| 摘要 |
PURPOSE: To remarkably shorten the working time and to significantly reduce the maintenance cost for a facility management by largely deleting the working man-hour due to cutting. CONSTITUTION: In a tip for a writing instrument having a ball holder 1 having at least an ink flow hole 3 and a ball 2, the holder 1 is formed by working a holder body 1-1 having the hole 3, an ink guide hole 4, an ink guide groove 5 and a ball house 6, inserting the ball 2 into the house 6, splitting it from a holder tip 1-2 for holding the ball 2 by caulking, and connecting the tip 1-2 to the body 1-1. |
