Patent ID: 6994425

Claim:
An ink jet printhead that comprises a substrate; and a plurality of micro-electromechanical nozzle arrangements positioned on the substrate, each nozzle arrangement comprising a nozzle chamber defining structure positioned on the substrate and having a fixed portion that is fast with the substrate and a movable portion that is displaceable with respect to the substrate and that defines an ink ejection port, the movable portion and fixed portion together defining a nozzle chamber and the movable portion being displaceable towards and away from the substrate to reduce and subsequently increase a volume of the nozzle chamber so that ink is ejected from the ink ejection port; and an elongate actuator that is anchored to the substrate at one end and operatively engaged with the movable portion at an opposite end, the elongate actuator being bent relative to the substrate on receipt of an electrical signal to displace the movable portion with respect to the fixed portion, wherein the ink ejection port is shaped so that tilting of the movable portion results in the ejection of a drop of ink in a direction substantially at right angles to the substrate.