Method of making an inkjet printhead

摘要

A method of making an inkjet printhead for surface mounting comprises providing a substrate 10 having a plurality of ink ejection elements and a plurality of electrical contacts 18 formed on a first surface, the contacts being connected to the ink ejection elements to allow selective energisation of the elements. A plurality of through-holes 26 are formed in the substrate each extending from the opposite surface of the substrate fully through the thickness of the substrate to meet the underside of a respective electrical contact 18 on the first surface. Each through-hole is substantially completely filled with a conductive material 36 by electroplating. Finally, a further plurality of electrical contacts (solder mounds) 38 are provided on the second surface of the substrate each in contact with the conductive material in a respective through-hole.