An ink jet recording head has a plate member provided with an array of discharge ports for discharge ink therethrough, and a head body provided with ink paths communicating with the discharge ports. The plate member is formed integrally with the head body and extends in a direction orthogonal to the...http://www.google.com.au/patents/US5374948?utm_source=gb-gplus-sharePatent US5374948 - Ink jet recording head having an integral plate member larger than the head body
