Patent ID: 7837302

Claim:
A printhead comprising: a plurality of nozzles, each nozzle including a chamber having an input aperture adapted to receive ink into the chamber and an output aperture through which ink is ejected from the chamber, and each chamber further including a window adapted to allow electromagnetic radiation to propagate through the window to heat the ink in the chamber and eject an ink droplet through the output aperture, wherein the ink in the chamber absorbs the electromagnetic radiation; a scan assembly configured to scan a laser beam comprising the electromagnetic radiation across the plurality of nozzles; and a reservoir adapted to hold ink and including a plurality of feed tubes, each feed tube being coupled to the chamber of a corresponding nozzle, wherein the reservoir is positioned above the plurality of nozzles and interconnected to the chambers via the plurality of feed tubes, and the output apertures of each chamber are positioned on a bottom of each chamber to deposit ink droplets ejected from each output aperture onto a printable medium positioned below the output apertures.