A DROPLET GENERATOR FOR A CONTINUOUS STREAM INK JET PRINT HEAD

摘要

A droplet generator for a continuous stream ink jet print head comprising: a cavity (3, 23) for containing the ink; nozzle orifices (17, 27) in a wall (9) of said cavity (3, 23) for passing the ink from the cavity (3, 23) to form jets; and first (11, 21) and second (13, 25) actuator means for establishing in combined operation a travelling wave which travels from said first actuator means (11, 21) through said ink to said second actuator means (13, 25) and passes in a direction substantially parallel to said wall (9) containing the nozzle orifices (17, 27).