Patent ID: 6808250
Filing Date: 2004-10-26
Classification: B41J

Abstract:
A method of producing an ink-jet head for water base ink, the ink-jet head comprising at least a first member, a second member and an ink chamber therebetween, wherein the first member includes two vibrating wall portions and a base portion, each vibrating wall portion having a piezoelectric ceramic and an electrode layer, the two vibrating wall portions being located on the base portion so that each said electrode layer faces said ink chamber; said method comprising sequentially performing steps of:(1) combining the first member with the second member by an adhesive so that said ink chamber is formed between the first member and the second member in the combined first and second members, whereby an adhesive layer is formed between the second member and each of the two vibrating wall portions; thereafter (2) forming a resin layer of poly-para xylylene or a derivative thereof selected from the group consisting of mono-chloro, di-chloro, fluoro and ethyl derivatives, on an entire inner surface of the ink chamber including the base portion, the two vibrating wall portions, each of said electrode layers, the second member and a surface of the adhesive layer faced in the ink chamber, by chemical vapor deposition method after the step of combining; and thereafter (3) conducting a plasma processing to the combined first and second members so that an entire surface of the resin layer formed on the entire inner surface of the ink chamber formed between the first member and the second member is made to be wettable to the water base ink.