| abstract |
A printhead nozzle is provided having a substrate having drive circuitry and an inlet for ejection fluid, a fluid chamber having an outlet for ejection fluid, the fluid chamber arranged on the substrate to receive ejection fluid from the inlet, and a heating element connected to the drive circuitry, the heating element having a relatively reduced volume proximate the drive circuitry and being arranged to be heated by the drive circuitry to cause the ejection fluid in the fluid chamber to be ejected through the outlet. |