Patent ID: 6991317

Claim:
A pagewidth printhead comprising a plurality of printhead integrated circuits, each printhead integrated circuit comprising a substrate incorporating drive circuitry and a plurality of nozzle arrangements positioned on the substrate so as to eject ink onto media, wherein each nozzle arrangement comprises: a static nozzle chamber structure extending from the substrate so as to define part of a nozzle chamber; an active nozzle chamber structure that defines an ink ejection port and is configured to define a remaining part of the nozzle chamber, the active structure being displaceable with respect to the static structure towards and away from the substrate respectively to reduce and increase a volume of the nozzle chamber so that ink in the nozzle chamber is ejected from the ink ejection port; and at least two actuators connected to the drive circuitry and operatively arranged with respect to the active structure to displace the active structure towards and away from the substrate on receipt of an actuating electrical signal from the drive circuitry, the actuators being configured and connected to the active structure to impart substantially rectilinear movement to the active structure.