An ink jet print head apparatus having a reduced thickness passivation layer. Passivation layer thickness is preferably below 7000 angstroms to permit operation at a lower turn-on-energy. The passivation layer is preferably formed in a discrete manner and may include a nitride layer and a SiC layer....http://www.google.de/patents/US6293654?utm_source=gb-gplus-sharePatent US6293654 - Printhead apparatus
