Patent Number: 7,611,226

Title: Thermal printhead with heater element and nozzle sharing common plane of symmetry

Abstract: An ink jet printhead that has a nozzle aperture 3 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 chamber configured to receive a supply of printing fluid and a heater element disposed in the chamber to generate a gas bubble in the printing fluid that ejects 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.

Inventors: Silverbrook; Kia (Balmain, AU)

Assignee: Silverbrook Research Pty Ltd

International Classification: B41J 2/04 (20060101)

Expiration Date: 1/03/02017