Patent ID: 7252375

Claim:
An ink cartridge for supplying ink to a printhead of an ink jet printing apparatus through an ink supply needle, comprising: a housing defining therein an ink chamber for accommodating ink, said housing comprising a bottom wall lying in a bottom plane, a first wall lying in a first plane, the first plane meeting the bottom plane, the first wall having a pair of upper corners, and a second wall positioned opposite to said first wall and lying in a second plane, the second plane meeting the bottom plane; an ink supply port into which the ink supply needle of the ink jet printing apparatus is inserted, said ink supply port being formed on said bottom wall at a position closer to said first wall of said housing than said second wall thereof; an overhang member for engaging with a part of the ink jet printing apparatus, said overhang member extending from said first wall in a direction away from said second wall, said overhang member being formed to protrude from a vicinity of the upper corners of the first wall; and a memory device mounting portion formed on an outer surface of said first wall, said memory device mounting portion being located at substantially a center, in the widthwise direction, of said first wall.