U.S. Philips Corporation

Herman F Maier

Michael Doring

Horst K Bentin

A plate, through which several ink ducts extend, merges at a flat side of the plate into nozzles and at the opposite side into separated pressure chambers. The printing head has a diaphragm plate common to all pressure chambers, connected to a one-piece piezoceramic plate, which has an embossed part overlying each pressure chamber. Film electrodes are provided on each embossed part, extending above and beyond the area of the pressure chamber. Electrical connections are made to the film electrodes outside the area above the pressure chambers so that the mass of the electrical connections does not affect the resonant frequency.

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Hamburg, Germany

Herman F Maier