Patent ID: 6536874
Filing Date: 2003-03-25
Classification: B41J

Abstract:
A printhead chip for an ink jet printhead, the printhead chip comprisinga substrate; and a plurality of nozzle arrangements that are positioned on the substrate, each nozzle arrangement comprising an active ink ejection structure that is positioned on the substrate and spaced from the substrate, the active ink ejection structure having a roof with an ink ejection port defined in the roof; a static ink ejection structure positioned on the substrate, the active ink ejection structure and the static ink ejection structure together defining a nozzle chamber in fluid communication with an ink supply, the active ink ejection structure being displaceable with respect to the static ink ejection structure towards and away from the substrate to reduce and increase a volume of the nozzle chamber to eject an ink drop from the nozzle chamber; and at least two actuators that are operatively arranged with respect to the active ink ejection structure to displace the active ink ejection structure with respect to the static ink ejection structure towards and away from the substrate, the actuators being configured and connected to the active ink ejection structure to impart substantially rectilinear movement to the active ink ejection structure.