Patent ID: 8434844
Filing Date: 2013-05-07
Classification: B41J

Abstract:
1. A stationary pagewidth inkjet printhead comprising one or more nozzle rows extending along a longitudinal axis of the printhead, wherein each nozzle is configurable to fire a droplet of ink at a plurality of predetermined different dot positions along said longitudinal axis, each nozzle having a primary dot position associated therewith, wherein said printhead is configured to compensate for a dead nozzle by printing from a selected functioning nozzle positioned in a same nozzle row as the dead nozzle, said selected functioning nozzle being configured to fire at least some ink droplets at the primary dot position associated with said dead nozzle and to fire at least some ink droplets at its own primary dot position, wherein each of said nozzles comprises: a nozzle chamber for containing ink, said nozzle chamber comprising a floor and a roof having a nozzle opening defined therein; and a plurality of moveable paddles defining at least part of the roof, said plurality of paddles being actuable to cause firing of an ink droplet from said nozzle opening, each paddle including a thermal bend actuator comprising: wherein each actuator is independently controllable via respective drive circuitry such that a direction of droplet ejected from said nozzle opening is controllable by independent movement of each paddle.