PEN HAVING INLET/OUTLET DENSE PARTS FOR FACILITATING INK FLOW MOTION TO BALL TIP ACCORDING TO THE PRINCIPLE OF CAPILLARY ACTION

摘要

PURPOSE: A pen having inlet/outlet dense parts is provided to facilitate ink flow from an ink tank to a ball tip according to the principle of capillary action and thus, to prevent an excess discharge of the ink. CONSTITUTION: The pen includes an ink tank(30); an absorptive storage(20) made of porous materials for absorbing ink from the ink tank(30); a ball tip(10) for withdrawing the ink stored in the absorptive storage(20) applying the principle of capillary action; an inlet/outlet dense part having denser pores; a guide(41) for guiding the outer circumference of the ball tip(10) to a rear cap(40); a tank cap(50) connected to the front side of the ink tank(30) and having a protruded outlet(51) for providing a pressure so that the inlet dense part is formed close to a contact portion between the absorptive storage(20) and the ink tank(30); and a ring-shaped elastic connector(52).