An ink-jet printhead and a manufacturing method thereof include a substrate on which a space portion is formed, a passage plate installed on the substrate in which an ink chamber is formed to store ink, a nozzle plate installed at a top surface of the passage plate in which a nozzle is formed to eject...http://www.google.com.au/patents/US7341332?utm_source=gb-gplus-sharePatent US7341332 - Ink-jet printhead and manufacturing method thereof
