U.S. Philips Corporation

Johannes R Roulaux

Joseph Rr Pankert

An ink jet recording device includes an ink jet recording head comprising at least one pressure chamber communicating with an ink reservoir via an ink supply channel and a nozzle plate comprising at least one nozzle opening for emitting droplets of ink, the nozzle plate forms a wall of the pressure chamber. The recording head further comprises a piezoelectric actuator element having an active direction and comprising at least one layer of piezoelectric material and at least two electrode layers which are arranged such that the dimension of the actuator element in the active direction is varied upon application of an electric voltage between terminals that are electrically connected to the electrode layers. The actuator element is arranged in cooperative relationship with the pressure chamber so that the pressure chamber changes its volume when the dimension of the actuator element in the active direction is varied. The piezoelectric actuator element is formed as an actuator plate, its active direction coinciding with the direction of the thickness of the actuator plate, and a recess is provided in the actuator plate to form the pressure chamber.

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Nieuwstadt, Netherlands

Johannes R Roulaux