| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball-point pen tip in which a ball comes into close-contact with the inner wall of the tip end of the ball-point pen tip in nonuse, which is excellent in ink circulation property by applying a stable pressing force to the ball.SOLUTION: The ball-point pen tip includes an ink circulation hole formed in the center of the bottom wall of a ball holding room and an ink circulation groove radially extended from the ink circulation hole, in a tip body. In the ball-point pen tip, the ball is placed on the bottom wall and the tip end is caulked inward, and thereby, a part of the ball is projected from the head of a tip and the ball is rotatably held. A cylinder body opened at both ends is disposed so as to move the rear of the ball and the ink circulation hole forward and backward and the ball is pressed to the inner wall of the tip end through the cylinder body by a coil spring disposed at the rear of the cylinder body. |
