Patent ID: 7766469

Claim:
An ink cartridge, comprising: an ink chamber configured to store ink therein; a particular wall; a protruding member extending from the particular wall and away from the ink chamber in a particular direction; a protrusion extending from the particular wall and away from the ink chamber in the particular direction; a particular portion extending away from the ink chamber in the particular direction and defining an enclosure comprising at least one pair of wall surfaces which oppose each other and a front wall surface connecting the at least one pair of wall surfaces, wherein the front wall surface is positioned apart from the particular wall and extends substantially parallel to a portion of the particular wall, wherein the at least one pair of wall surfaces and the front wall surface have a space formed therein, and the space is configured to be in fluid communication with the ink chamber, and wherein the at least one pair of wall surfaces and the front wall surface are positioned between the protrusion and the protruding member and configured to contact the ink stored in the ink chamber; an ink supply portion configured to supply ink from an interior of the ink chamber to an exterior of the ink chamber, wherein the ink supply portion is positioned between the protrusion and the protruding member; and an air intake portion configured to draw air into the ink chamber, such that the air contacts the ink stored in the ink chamber.