Patent ID: 7445320

Claim:
A multi-chamber ink cartridge for an ink-jet printer, the ink cartridge comprising: a printhead to eject ink droplets on a printing medium; a unitary body comprising: first, second, and third ink chambers formed by “T”-shaped vertical walls in the unitary body, each wall having a height such that a top portion of the unitary body, based on the height, is covered when enclosing the ink chambers, and each wall having a length in a direction different from the height, and first, second and third ink channels respectively provided from a lower portion of each of the ink chambers to an outlet at the printhead to supply ink to the printhead; and a flexible printed circuit to apply an electrical signal to nozzles of the printhead; wherein the first chamber is disposed perpendicular to the second and the third chamber, and the printhead is disposed on a lower portion of the unitary body vertically below the second and third chambers and not underneath the first ink chamber, and wherein the first ink channel is disposed parallel to a lengthwise direction of the second or third chamber.