| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball-point pen for correcting a writing error which does not require a stirring operation and also is free from troublesome pressing of the lateral face of a container or attach/detach a cap each time the pen is used. SOLUTION: The refill 21 of the ball-point pen has the tip 23 of the ball-point pen provided at the extreme forward end of a barrel and also an ink storage pipe 22 provided backward of the tip 23. Further, a spring pressure is imparted to the back face of a ball on the extreme forward end so that the ball comes into contact tightly with the inner edge of a ball embracing part at the apex of the tip 23. In addition, the ink storage pipe 22 is filled with a white pigment ink which contains at least, white pigment such as titanium oxide, polymer hollow microparticles or the like and a gelling agent and also which is blended so that the sedimentation of the pigment is prevented from occurring and at the same time, the fluidity is not impaired. At the rear end of the ink, a follower 30 is arranged which follows the ink as it is consumed and also a pumping-type pressurizing mechanism part is provided backward of the follower 30. Thus it is possible to pressurize the rear end of the follower 30 by the pressing of the air through a pumping action which creates a repulsive force to the receding refill 21 of the ball-point pen under writing pressure. |
