An inkjet printhead with nozzles 4 and liquid passages 31, 32 leading to each nozzle. The nozzles, ejection actuators 14, associated drive circuitry 22 and liquid passage 31, 32 being formed on and through a wafer 21 using lithographically masked etching technique, such that the wafer has a droplet ejection...http://www.google.com.au/patents/US7156484?utm_source=gb-gplus-sharePatent US7156484 - Inkjet printhead with CMOS drive circuitry close to ink supply passage
