Patent ID: 7980667

Claim:
A nozzle arrangement for an inkjet printhead, the nozzle arrangement comprising: a substrate assembly defining an ink inlet channel; a nozzle chamber in fluid communication with the ink inlet channel, the nozzle chamber including an ink ejection port defined through a roof of the nozzle chamber, and a pivotal wall formed as part of one sidewall of the nozzle chamber; a paddle attached to the pivotal wall in a cantilevered manner, and extending into the nozzle chamber; a pair of anchors extending from the substrate assembly, a first anchor of the pair connected to a positive electrical contact and a second anchor of the pair connected to a negative electrical contact; and a thermal expansion actuator forming a bridge between the pair of anchors and the pivotal wall, the thermal expansion actuator having two arms each respectively attached to each of the pair of anchors, the thermal expansion actuator further having a bridge portion bridging the two arm, wherein the thermal expansion actuator is configure to expand upon application of a current supplied through the pair of anchors.