Droplet selection mechanism

摘要

A method and droplet selection device are provided for a continuous printer for selectively ejecting a second droplet (61) and to have it collided with a predefined first droplet (62). In particular, the device comprises a first droplet ejection system (10) arranged to generate a continuous stream of first droplets (6) from a fluid (60) jetted out of an outlet channel (5); and a second droplet ejection system (100) arranged to generate second droplets (61) for colliding the second droplets into the first droplets so as to selectively deflect the first droplets from a predefined printing trajectory. The second droplet ejection system comprises a control circuit (11) to selectively eject the second droplet and to have it collided with a predefined first droplet.