Patent ID: 6619870
Filing Date: 2003-09-16
Classification: B43K

Abstract:
A collector type writing instrument comprising:a point assembly with a writing point at the tip thereof, an ink tank for storing a low viscosity ink in a free-state ink condition, an ink feeder portion formed of a center core, collector core or longitudinal groove, for leading ink from the ink tank to the writing point, and a collector disposed between the ink tank and the writing point as an adjuster element for storing ink via an air/liquid exchanger in its retaining portion utilizing capillarity when an inner pressure is adjusted, the writing instrument characterized in that: an ink absorber capable of keeping ink therein is disposed inside the ink tank and connected to the center core, collector core or longitudinal groove as the ink feeder portion, the ink absorber having a length at least reaching to a position more rearwards than an approximate center of the ink tank and having an outside diameter that is sized to be smaller than an inside diameter of the ink tank so as to create a space around itself for permitting free-state ink to move freely, and the collector has a lead portion having a capillary capacity for establishing connection enabling ink to be led from the ink absorber to the air/liquid exchanger.