Ink jet recording apparatus having deflection means for deflecting droplets of ink emitted through a nozzle

摘要

A nozzle of an ink jet head is formed such that a droplet of ink is emitted in a direction nonparallel to a virtual plane formed by a scanning direction X and an electric field direction Z. A voltage is applied between a nozzle plate and a facing electrode for creating an electric field. First and second ink droplets are emitted from the same nozzle during one print cycle. The first ink droplet is emitted in an uncharged state in order not to be deflected by the electric field. On the other hand, the second ink droplet is emitted in a charged state in order to be deflected by the electric field. Because of the difference in deflection amount, the landing positions of the first and second ink droplets are varied, whereby dot density can be improved to be twice as great as nozzle density.