| 摘要 |
<P>PROBLEM TO BE SOLVED: To stabilize the behavior of air inside an ink tank. <P>SOLUTION: The refill of a low-viscosity aqueous ball-point pen comprises a housing, a pen point fitted to the apex of the housing, an ink tank 4 formed inside the housing, an ink guidance member which guides the internal ink of the ink tank 4 to the pen point, and an air passageway which is formed inside the housing between the ink tank 4 and the pen point and connects the ink tank 4 with the outside of the housing. The ink tank is internally divided into a plurality of ink chambers arranged longitudinally by a partition wall 11, and the internal ink of the these ink chambers is guided successively to the pen point, to begin with, from the ink chamber closest to the pen point. In addition, an almost uniform clearance 13 is provided across the entire circumference of the ink tank 4 between the outer peripheral surface of the partition wall 11 and the inner peripheral surface of the ink tank 4. Further, the ink is retained inside the ink chamber by an annular ink liquid film formed in the clearance 13, so as to allow the inflow of air into the ink chamber through the clearance 13. <P>COPYRIGHT: (C)2008,JPO&INPIT |
