Patent ID: 6702430
Filing Date: 2004-03-09
Classification: B41J

Abstract:
An actuating device for a multi-nozzle ink jet printhead which comprises:a linear array of electromechanical transducers, some of which are configured as actuator fingers operatively associated with the nozzles of the printhead while others are configured as support fingers interposed between the actuator fingers, each electromechanical transducer having a first and a second electrode and is adapted to expand and contract in accordance with a voltage applied between the first and second electrodes, wherein the totality of the transducers define at least one group which includes a plurality of actuator fingers and a plurality of support fingers, and control means operatively associated with each group for applying a voltage, that depends on the number of active actuator fingers in this group, to the first electrodes of all support fingers of the group.