| 摘要 |
PURPOSE:To enable various kinds of pen bodies and ink to be used wherein ink is supplied accurately by an ink amount consumed for writing without being influenced from pressure by writing or the like, its operation is sure and its structure is simple. CONSTITUTION:An ink reserving chamber 2 and a freely slidable slide plug are provided in a pen holder 1, and a pen body 4 is freely slidably provided axially at a tip part of the pen holder. A freely elastically deformable diaphragm member 13a which divides the ink reserving chamber from the pen body is provided in the pen holder. A notchlike opening part 16a is formed to the diaphragm member. When writing is carried out, the pen body retreats to deform the diaphragm member elastically, and an inside of the ink reserving chamber is pressurized. Besides, the opening part 16a is released, and ink is supplied to the pen body. |
