High resolution matrix ink jet arrangement

A high resolution ink jet system comprising an ink jet head, drive means for providing a scanning motion between the ink jet head and a substrate, an array of ink jets in the ink jet head arranged in matrix form containing at least three adjacent parallel rows of the ink jets, each row of the adjacent parallel rows including a number of the ink jets and extending substantially parallel to a direction of scanning motion, the ink jets including an array of ink chambers and a plurality of orifice passages, an ink chamber plate in the ink jet head having an ink chamber side and an orifice side and having the array of ink chambers formed on the ink chamber side, the plurality of orifice passages extending through the ink chamber plate, each leading from one of the ink chambers to the orifice side of the ink chamber plate, an orifice plate affixed to the orifice side of the ink chamber plate and having an array of orifices each communicating with one of the orifice passages, each of the ink chambers in the array being spaced from a corresponding one of the array of orifices by a distance which is identical for all of the ink chambers in the array, a plurality of ink supply ducts extending within the ink chamber plate transversely to the adjacent parallel rows of ink jets, a plurality of ink passages connecting each of the ink chambers with at least one of the ink ducts, and a piezoelectric member affixed to the ink chamber side of the ink chamber plate and having an array of actuating electrodes disposed at locations corresponding to locations of the ink chambers in the ink chamber plate.