Patent ID: 7175261

Claim:
An inkjet printhead assembly comprising: a plurality of structures laminated together, one of the structures being a printhead having: a plurality of nozzles; a plurality of heater elements associated with each of the nozzles respectively, each heater element configured for thermal contact with a bubble forming liquid; and a plurality of ejectable liquid inlets in fluid connection with the nozzles, the inlets and nozzles being micron-sized; such that, heating the heater element above the boiling point of the bubble forming liquid forms a gas bubble that causes the ejection of a droplet of the ejectable liquid from the nozzle, the remaining structures including a plurality of passages for the ejectable liquid, the passages extending from the ejectable liquid inlets on the printhead to openings configured for connection an ejectable liquid supply, the openings being substantially larger than the inlets, wherein, adjacent structures within the laminated structure are laminated together so that the passages funnel the ejectable liquid from the openings to the ejectable liquid inlets of the printhead, and each of the structures, apart from the printhead, are generally planar with openings to the passages on opposing sides, wherein the openings in the side of one of the structures are elongated, and the openings in the abutting side of the adjacent structure are also elongated; such that, the long dimension of the elongated openings in one side is angled relative to the long dimension of the openings of the abutting side.