Patent ID: 7207656

Claim:
A printhead comprising: a substrate that defines at least one ink supply channel; and a plurality of nozzle arrangements that are positioned on the substrate, at least one nozzle arrangement comprising a nozzle chamber structure that is positioned on the substrate to define a nozzle chamber in fluid communication with an ink supply channel and an ink ejection port in fluid communication with the nozzle chamber; and a micro-electromechanical ink ejection mechanism that is positioned on the substrate operatively with respect to the nozzle chamber to eject ink from the ink ejection port, the micro-electromechanical ink ejection mechanism including an elongate actuator arm that is fixed at one end to the substrate and has an ink ejection member positioned on an opposite end and in a respective nozzle chamber; wherein said at least one nozzle arrangement is positioned so that the actuator arm of the nozzle arrangement is oriented at an acute angle with respect to a print medium feed direction.