Patent ID: 7591540
Filing Date: 2009-09-22
Classification: B41J

Abstract:
1. An ink ejection arrangement for a printhead integrated circuit, the arrangement comprising: a fluid chamber having a fluid outlet nozzle and a fluid supply channel respectively defined in opposite walls of the chamber, the chamber defining chamber wall edge portions; and a nozzle paddle operatively located in the chamber between the edge portions, the paddle having upturned edge portions which cooperate with the chamber wall edge portions, the paddle operatively displaceable upwards to eject ink from the fluid outlet nozzle, the paddle spaced from the chamber wall edge portions so that ink is able to flow between a front and rear of the paddle to allow refilling of the chamber with ink via the supply channel, wherein the chamber wall edge portions are configured to reduce fluid flow through a space between said portions and the paddle when the paddle moves from a rest position to an ejection position.