Ink jetting apparatus with multi-nozzles

An ink jetting apparatus with multi-nozzles, the apparatus comprising:

• a liquid droplet generating unit configured to generate liquid droplets from ink and to jet the liquid droplets through the multi-nozzles;
• and
• an evaporation control unit configured to guide the liquid droplets jetted from the multi nozzles to protect the liquid droplets from thermal and physical disturbance and to control evaporation of the liquid droplets,.
• the evaporation control unit comprising a spacer, a focusing electrode and a heating unit, wherein
• the spacer forms a path guiding the liquid droplet jetted from the liquid droplet generating unit,
• the focusing electrode is arranged below the spacer and has a through-hole for discharging the liquid droplets that passed though the spacer, and is configured to allow the liquid droplets to be focused to a center of the through-hole and discharged using a voltage applied, and
• the heating unit is formed as an electric heating plate arranged below the focusing electrode for heating the focusing electrode.