An apparatus for printing an image is provided. The apparatus includes an ink droplet forming mechanism operable to selectively create a stream of ink droplets having a plurality of volumes, a means for selectively obtaining droplet coalescence between adjacent droplet streams, and a droplet deflector...http://www.google.fr/patents/US6474781?utm_source=gb-gplus-shareBrevet US6474781 - Continuous ink-jet printing method and apparatus with nozzle clusters
Continuous ink-jet printing method and apparatus with nozzle clusters
