Patent ID: 7287845

Claim:
An ink cartridge, comprising: a particular wall having a first end and a second end opposite the first end; an ink supply portion positioned at the particular wall and adjacent to the second end of the particular wall; a translucent portion positioned at the particular wall between the first end of the particular wall and the ink supply portion, wherein the translucent portion defines an enclosure, and the enclosure comprises at least one pair of wall surfaces which oppose each other, wherein the at least one pair of wall surfaces extend outward from the particular wall and have a space formed therebetween, wherein the translucent portion has a first length which extends between the first end of the particular wall and the second end of the particular wall, and the translucent portion has a second length which extends perpendicular to the first length and parallel to the particular wall, wherein the first length is greater than the second length; an air intake portion positioned at the particular wall and between the first end of the particular wall and the translucent portion; an ink chamber; a communication path coupled to the ink supply portion, wherein the communication path is configured to dispense ink from an interior of the ink chamber to an exterior of the ink chamber via the ink supply portion; and a signal blocking member, wherein the signal blocking member is disposed within the enclosure and is configured to move within the enclosure based at least on an amount of ink disposed within the ink chamber, wherein the signal blocking member is sandwiched between the at least one pair of wall surfaces.