There is disclosed an ink jet printhead which comprises a plurality of nozzles 3 and one or more heater elements 10 in a chamber 7 corresponding to each nozzle 3. Each heater element 10 is configured to heat a liquid 11 in the printhead to a temperature above its boiling point to form a gas bubble 12...http://www.google.de/patents/US7506963?utm_source=gb-gplus-sharePatent US7506963 - Inkjet printhead with planar heater parallel to nozzle
Inkjet printhead with planar heater parallel to nozzle
