An ink ejection device, an image forming apparatus having the same, and a method thereof. The ink ejection device includes a print head including at least one head chip in which a plurality of nozzles is arranged to eject ink on a printing medium at a predetermined angle inclined with respect to a printing...http://www.google.com.au/patents/US7517034?utm_source=gb-gplus-sharePatent US7517034 - Ink ejection device, image forming apparatus having the same and method thereof with gap control of printhead and print medium
