Hewlett-Packard Development Company, L.p.

Pat MacDermott

Kevin Dooley

Phil Keenan

Barry Fitzgerald

Gerard Lowe

A method of making an inkjet printhead comprises forming a first patterned layeron a surface of a first substrate, forming a second patterned layeron a surface of a second substrate, bonding the first and second layers in intimate face-to-face contact, and removing the second substratefrom the second patterned layer. The first and second patterned layerstogether define at least one ink ejection chamber having at least one ink ejection nozzle.

Method of making an inkjet printhead

A hardwearing inkjet printhead comprises a substratehaving an ink ejection circuitand a patterned glass frit planarization layeron its surface. A ceramic bodyhas a substantially flat surfaceB intimately bonded to the planarization layer. The ceramic body and planarization layer together define at least one ink ejection chamberand associated ink ejection nozzlewith the nozzle and at least the major part of the height of the chamber formed in the ceramic body.

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Kildare, Ireland

Pat MacDermott