Patent ID: 7946685
Filing Date: 2011-05-24
Classification: B41J

Abstract:
1. An inkjet printer comprising: a plurality of nozzle apertures supported on a silicon substrate, each with a nozzle axis extending through the center of the nozzle aperture and normal to the nozzle aperture; a chamber corresponding to each of the nozzles respectively; an inlet to supply the chamber with liquid; a heater element disposed in each of the chambers respectively, the heater element configured as a beam suspended at its ends for immersion in the liquid such that heating the heater element forms a gas bubble that ejects a drop of the liquid through the nozzle aperture corresponding to that heater element; wherein, the heater element is a planar structure suspended parallel to the nozzle aperture and positioned to nucleate the gas bubble with a centre that is offset from the nozzle axis, the offset being towards the inlet.