Piezoelectrically operated print head with channel matrix and method of manufacture
AssigneeSiemens Aktiengesellschaft
InventorKenth Nilsson
Life of this patent
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Abstract
A mechanically stable, piezoelectric print head for an ink jet printer has ink channels formed by a channel matrix that consists of a row of piezoelectric strips disposed in spaced parallel relation next to one another, covered by a plate on both sides. The channels thus formed directly institute the printing nozzles.
Claims12
A piezoelectrically operated print head for a dot matrix comprising;
- printing nozzles in the form of ink channels each having drive elements, said channels accepting writing fluid from which the writing fluid is ejected drop-by-drop due to piezoelectric deformation of its drive element, said ink channels being formed as a channel matrix that consists of at least one series of strips of piezoelectric material that are disposed parallel to one another at spaced intervals, and including means for electrically contacting said piezoelectric material at both sides, and means for covering said strips at both sides.
A method for manufacturing a print head including the steps of providing a carrier plate having a conductive layer on one surface, applying piezoelectric material to said conductive layer in strips, providing electrical contacts for contacting said piezoelectric strips in pairs, and providing an insulating plate for covering the side of said strips opposite said carrier plate for forming a plurality of closed channels.
Dependencies are inferred from the claim text.