Patent ID: 7306322

Claim:
A printhead assembly that comprises at least one elongate, printhead integrated circuit having a plurality of micro-electromechanical ink ejection mechanisms configured to eject ink; an ink distribution assembly to which the, or each, printhead integrated circuit can be mounted and defining a plurality of converging ink passages in fluid communication with respective ink ejection mechanisms; and an ink reservoir mounted to the ink distribution assembly and defining a plurality of parallel ink channels in fluid communication with respective groups of the passages, such that inks can be fed from the channels to respective groups of the ink ejection mechanisms, wherein the ink distribution assembly is a laminated stack comprised of a plurality of layers that define openings and inwardly converging channels so that when laminated, the converging ink passages are defined, with the, or each, printhead integrated circuit being centrally positioned to be fed with ink from the converging ink passages.