Patent ID: 8112889

Claim:
Method of manufacturing an ink jet printhead, said printhead comprising a substrate and an ink barrier layer formed on said substrate, said method comprising the steps of: arranging a nozzle plate in which there is formed a plurality of nozzles suitable for the ejection of ink drops, said nozzle plate comprising an upper surface and a lower surface, said upper surface being on the side of the ejection of ink drops and said lower surface being opposite to said upper surface; depositing on said upper surface a first coating including a first layer comprising silicon carbide, while maintaining said nozzle plate at a first deposition temperature not larger than 250° C.; depositing on said lower surface a second coating including a second layer comprising silicon carbide, while maintaining said nozzle plate at a second deposition temperature not larger than 250° C.; positioning said nozzle plate onto said ink barrier layer by bringing into contact said second coating layer with said ink barrier layer; wherein said first layer is deposited before said second layer, and wherein said first layer and said second layer are distinct and separated from each other on said nozzle plate.