DROPLET BREAK-UP DEVICE

摘要

The invention relates to a droplet break up device comprising: a chamber (2) for containing a printing liquid (3) comprising a bottom plate (4); a pump for pressurizing the printing liquid; an outlet channel (5) having a central axis, provided in said chamber for ejecting the printing liquid; and an actuator (7) for breaking up a fluid jetted out of the -outlet channel. The actuator is provided around the outlet channel, arranged to symmetrically impart a pressure pulse central to the outlet channel axis. Accordingly, smaller droplets can be delivered at higher frequencies.