Inkjet printhead with symetrical heater and nozzle sharing common plane of symmetry

摘要

An ink jet printhead that has a nozzle aperture that defines a planar opening having two planes of symmetry, both of which extend perpendicular to the plane of the opening. The printhead also having a heater corresponding to the nozzle aperture for generating a gas bubble in printing fluid to eject a drop of the printing fluid through the nozzle aperture. The heater element is a suspended beam that has two planes of symmetry and at least one of the heater element planes of symmetry is common to one of the nozzle aperture plane of symmetry.