Patent ID: 8066356

Claim:
An inkjet printhead, comprising: a chamber layer formed above a substrate, the chamber layer including an, ink chamber configured accommodate an amount of ink, the ink chamber including a first and second side wall facing each other along a first direction, the ink chamber further including a third side wall; an island formed above the substrate and in the chamber layer, the island including an island side wall facing the third side wall of the ink chamber along a second direction substantially perpendicular to the first direction; and a nozzle layer formed above the chamber layer, the nozzle layer including a nozzle through which the ink from the ink chamber is ejected, wherein the first and second side walls are symmetrical about the center of the nozzle along their entire length along the second direction, and the third side wall and the island side wall are symmetrical about the center of the nozzle along their entire length along the first direction.