Patent ID: 8550601

Claim:
An ink jet printhead comprising: a jet stack comprising: a plurality of piezoelectric elements; a space between each adjacent piezoelectric element, wherein each space between adjacent piezoelectric elements is filled with a photoresist material; a diaphragm attached to the plurality of piezoelectric elements; and a body plate attached to the diaphragm with a diaphragm attach material; a printed circuit board attached to the photoresist material and comprising: a plurality of electrodes, wherein each of the plurality of electrodes is electrically coupled to one of the plurality of piezoelectric elements with a conductor and; wherein each of the plurality of piezoelectric elements comprises an upper surface; an entirety of each upper surface of each piezoelectric element is not covered by the photoresist material; and wherein the photoresist material physically contacts the printed circuit board, the diaphragm and the plurality of peizoelectric elements.