Patent ID: 6511168
Filing Date: 2003-01-28
Classification: B41J

Abstract:
An ink container for supplying ink out of a main body thereof through an ink supply port, said container comprising:an ink retaining material for retaining the ink in the main body of the container; pressure adjusting means for adjusting a pressure in the main body; and a valve member disposed in the ink supply port, said valve member including a plug member for plugging said ink supply port and an elastic member for urging said plug member to plug said ink supply port; wherein said plug member includes an extension extended outwardly of said ink supply port, said extension being sized not to extend beyond said ink container; and wherein said ink container is rotated when it is connected with a recording head, and wherein said extension is relatively short at a portion relatively closer to a center of rotation of said ink container and is relatively long at a portion relatively remote from the center of rotation thereof.