| 摘要 |
PURPOSE: To provide a direct liquid-type writing tool wherein air in an ink can be completely removed by a centrifugal separator and dripping of the ink can be eliminated also when a tail end side of an axial barrel is sealed by a pillar body whose periphery is coated with a paste-like back flow preventing body. CONSTITUTION: A direct liquid-type writing tool has an axial barrel 1 having a pen tip 2 at its head end. The axial barrel 1 is filled with an ink 1 directly. The tail end side of the axial barrel 1 is sealed by a pillar body 5. The periphery of the pillar body is coated with a paste-like back flow preventing body 6 and the pillar body is formed of an open cell body through which gas passes but the ink hardly passes. The front part of the pillar body 5 is filled with the ink 1. |
