Patent ID: 7654644
Filing Date: 2010-02-02
Classification: B41J,Y10T

Abstract:
1. A printhead having a plurality of nozzle arrangements, each arrangement comprising: a substrate which defines an ink inlet aperture with a wall portion bounding the ink inlet aperture and a crown portion defining a nozzle opening; a skirt portion depending from the crown portion to form part of a peripheral wall of the nozzle assembly, the crown and skirt portions being displaceable with respect to the wall portion towards the substrate to alter a volume of a nozzle chamber defined by the wall, crown and skirt portions such that when the volume is altered, ink is ejected from the nozzle opening; and a thermal actuator that interconnects the crown and skirt portions with the substrate, the actuator for displacing the crown and skirt portions, wherein the wall portion and skirt portions are configured to define a fluidic seal to inhibit the egress of ink during such displacement.