Patent ID: 8029099

Claim:
A nozzle assembly for an inkjet printhead, the nozzle assembly comprising: a substrate assembly defining an ink inlet, the substrate assembly including a silicon substrate, a dielectric layer deposited on the substrate, and a CMOS passivation layer deposited on the dielectric layer; a nozzle defining an opening through which ink is ejected, the nozzle including a crown portion and a skirt portion depending from the crown portion; a wall portion extending from the substrate towards the nozzle and bounding the ink inlet; a thermal bend actuator assembly mounted to the substrate assembly; and a lever arm extending from the thermal bend actuator to the nozzle, the lever arm supporting the nozzle above the wall portion, wherein the thermal bend actuator assembly is adapted to actuate the lever arm such that the crown portion of the nozzle is displaced with respect to the wall portion, whereby ink contained in the nozzle is ejected out through the opening, and the dielectric and passivation layers overhang the ink inlet.