| 摘要 |
PROBLEM TO BE SOLVED: To ensure that a tip coated resin securely sticks to a holder, in a ball-point pen tip whose ink is prevented from drying by the tip coated resin. SOLUTION: The ball-point pen tip 10 is equipped with a ball 20 and the holder 30. The holder 30 has a caulked part 40 for preventing the ball 20 stored in a ball housing from coming off to the outside and a conical tapered part 50 formed without a break from the caulked part 40. The ball-point pen tip 10 prevents ink from being dried by the tip coating resin 70 stuck down covering the caulked part 40 side of the ball 20, the caulked part 40 and the tapered part 50. In addition, a deformed part 60 is formed at the caulked part 40 and the caulked part 40 side of the tapered part 50, or the caulked part 40 side of the caulked part 40 and the tapered part 50, of a region where the tip coating resin 70 is stuck down. |
