Self cleaning ink jet printhead cartridges

摘要

Ink jet cartridge for an ink jet printer including an orifice plate having a plurality of orifices for ink ejection; a cartridge for receiving a reservoir having ink which is adapted to be ejected through the orifices, the cartridge including a cleaning manifold having a plurality of inlet and outlet passages through which cleaning fluid can be applied so that such fluid is directed across the surface of the orifice plate; and a plurality of actuable ultrasonic transducers disposed in operative relationship with respect to the orifice plate and which when actuated produce ultrasonic sound waves which impinge upon the orifice plate to loosen debris whereby the cleaning fluid directed across the surface of the orifice plate carries away such loosened debris.