Printhead having ejection nozzles with displaceable fluid chambers

A printhead is provided having a plurality of ejection nozzles defined in an array along a substrate. Each nozzle has a wall portion bounding a respective fluid inlet defined in the substrate, a crown portion defining an ejection port, a skirt portion depending from the crown portion to form part of a peripheral wall of the nozzle, and an actuator. The crown and skirt portions are displaceable with respect to the wall portion to alter a volume of a fluid chamber defined by the wall, crown and skirt portions such that when the volume is altered, fluid is ejected from the ejection port. The crown portion defines a rim surrounding the ejection port so as to facilitate formation of a meniscus of the fluid. The actuator causes the displacement of the crown and skirt portions.