A piezoelectric ink jet head that includes a polymer film, for example a flex print, located between the piezoelectric element and the reservoirs in the jet body. The film provides an efficient seal for the reservoirs and also positions the electrodes on the side of the piezoelectric element in which...http://www.google.com/patents/US7478899?utm_source=gb-gplus-sharePatent US7478899 - Piezoelectric ink jet module with seal
