Importance

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Abstract

A method of providing an ink jet printing head with piezo-crystals comprises the steps of providing a plateshaped basic printing head body including an ink supply reservoir, ink pressure chambers, ink exit openings, ink outlet channels which connect the pressure chambers with the ink exit openings, and ink inlet channels for connecting the pressure chambers with the ink supply chamber; providing a membrane plate; providing an piezo-ceramic plate; attaching the piezo-ceramic plate face-to-face to the membrane plate; attaching the membrane plate face-to-face to the basic body; and subsequent to attaching the piezo-ceramic plate to the membrane plate, entirely separating piezo-crystals from the piezo-ceramic plate by providing closed-course cuts through the piezo-ceramic plate such that a separate piezo-crystal is obtained in alignment with each pressure chamber.

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First Claim