Inkjet print head has piezoelectric elements regulated by control device to perform tactile movements and applied to curved spring strips engaged with connecting rod, in which connecting rod is coupled to valve body for closing ink nozzles

摘要

The print head has piezoelectric elements (17) regulated by a control device (18) to perform tactile movements, and applied to curved spring strips (14) engaged with the ends of a connecting rod (8). The connecting rod is coupled to a mobile valve body (6) provided to close the ink nozzles of a pressurized ink chamber (2). A piezoelectric valve-actuating device (9) is electrically connected to the control device to drive the valve body with reciprocating motions. The valve body is held by a closing spring (7) in closing position and coupled to the connecting rod in a driving manner. The spring strips are supported on the valve side end opposite the ink chamber. The connecting rod is subjected to the tractional prestress of a tension spring.