A liquid jet recording head includes a plurality of ejection outlets through which droplets of liquid are ejected by thermal energy, a plurality of liquid passages communicating with the ejection outlets to supply the liquid, a plurality of supply inlets for supplying the liquid to the passages and a...http://www.google.com.au/patents/US6224197?utm_source=gb-gplus-sharePatent US6224197 - Liquid jet recording head having tapered liquid passages
