Patent ID: 7387364

Claim:
A nozzle arrangement for a printhead integrated circuit, the nozzle arrangement being configured to be replicated on a wafer substrate incorporating drive circuitry so that the printhead integrated circuit comprises an array of the nozzle arrangements, the nozzle arrangement comprising a static nozzle chamber structure extending from the wafer substrate and bounding an ink inlet channel defined through the wafer substrate; a dynamic nozzle chamber structure arranged on the static nozzle chamber structure so that the static and dynamic nozzle chamber structures together define a nozzle chamber in fluid communication with the ink inlet channel, the dynamic nozzle chamber structure defining an ink ejection port and being displaceable relative to the substrate so that ink is ejected from the ink ejection port due to volumetric change in the nozzle chamber; and an actuating mechanism fast with the substrate and the dynamic nozzle chamber structure and electrically connected to the drive circuitry to receive drive signals from the drive circuitry so that the dynamic nozzle chamber structure is reciprocally displaced to eject ink from the ink ejection port.