Patent ID: 7279111

Claim:
Method for the manufacture of a monolithic actuating assembly for an ink jet printhead, said monolithic actuating assembly being provided with a die, comprising the steps of: disposing of a wafer comprising a plurality of said dice of semiconductor material, at least one dice comprising a substrate of Silicon P and each dice comprising a plurality of layers; etching, in said substrate of each of said dice, a first part of a groove; etching a second part of said groove, in such a way that a lamina made of said plurality of layers is made in each of said dice; performing a deposition of a plurality of sacrificial layers on each of said laminas; applying a structural layer on each of said laminas, in such a way that said structural layer covers said plurality of sacrificial layers; performing a removal of said plurality of sacrificial layers, in such a way that a plurality of chambers and a plurality of ducts are obtained; wherein said steps of etching a second part of said groove, performing a deposition of a plurality of sacrificial layers on each of said dice and performing a removal of said plurality of sacrificial layers on each of said dice are carried out by way of electrochemical processes using as the electrode a conducting layer, made of an electrically conductive material, which forms a single equipotential network connected on the inside of each of said dice.