| 摘要 |
PROBLEM TO BE SOLVED: To provide an erroneous writing correcting knock type ballpoint pen convenient without troublesomeness of attaching or detaching a cap at each time. SOLUTION: In the knock type ballpoint pen comprising a plug 18 rotating cooperatively with forward or backward movement of a ballpoint pen refill 21 and provided in a tip inner hole of a front barrel 5 so that at the time of retreating the refill 21, the plug 18 is brought into pressure contact with a tip end of the pen, at the time of forwarding the refill 21, the plug 18 is rotated so that the tip end is projected from an end port 6 of the barrel 5, the refill 21 has a tip 23 of the pen at its end and an ink containing tube 22 at the rear. In this case, an end of a bar shaft provided forward of a spring 20 urges a back surface of an end ball so that the ball is brought into close contact with an inner edge of a ball embracing part of the tip end in the inner hole of the tip 23. And, the tube 22 is filled with white gel-like ink and a follower following to the ink in the case of consuming the ink is arranged at rear end of the ink. |
