| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball point pen which can use an ink which is easily clogged and can correct mainly an error in writing, etc., by hiding them with a white ink. SOLUTION: In a ball point pen refill 2, a tip 4 has an apex ball 5 and an idle member 7 being brought into contact with the back face of the apex ball and a spring 9 for pressing the idle member forward is arranged and the apex ball is brought into close contact with the inner edge of a ball holding part of the apex of the tip. In addition, a shaft part is integrally provided on the shaft center of an inner hole of a tail plug and a seal part is provided on the outer peripheral part at the front of the shaft part and a spring member 16 is provided between the back end of the inner hole of the tail plug and the back end of an ink storing pipe 10 and the refill is energized to the front of the shaft cylinder and by retreating action of the refill based on pushing pressure to the apex part of the tip, the seal part provided on the outer peripheral part of the shaft part is slid under a condition where the seal part is brought into close contact with the inner peripheral part of the ink storing pipe and the back end hole of the ink storing pipe is pressed and fluidity of the ink to the tip side is supported. |
