Liquid droplet discharge apparatus and liquid droplet discharge adjusting method thereof

摘要

A liquid droplet discharge apparatus includes a liquid droplet discharge head and a control unit. The liquid droplet discharge head includes: a plurality of main nozzles arranged in a first direction and discharging liquid droplets of main dots; and a plurality of sub nozzles arranged at end portion sides of arrays of the main nozzles and discharging liquid droplets of sub dots. The control unit is configured to control the liquid droplet discharge head to discharge the liquid droplets from the main and sub nozzles and to form sub dot arrays by the liquid droplets discharged from the sub nozzles in two arrays with being staggered at a predetermined interval in the second direction between main dot arrays by the liquid droplets discharged from the main nozzles, so as to form the dot arrays.

主权项

1. A liquid droplet discharge apparatus comprising:
a liquid droplet discharge head comprising a plurality of nozzles arranged in an array along a first direction; and a control unit configured to control the liquid droplet discharge head to discharge liquid droplets from the plurality of nozzles toward a recording medium while moving the recording medium in a second direction orthogonal to the first direction or while moving the liquid droplet discharge head in the second direction, so as to form an image on the recording medium, wherein the plurality of nozzles comprises:
a plurality of main nozzles that is arranged in the first direction and is configured to discharge liquid droplets of main dots having a first diameter; anda plurality of sub nozzles that is arranged at end portion sides of the main nozzles and is configured to discharge liquid droplets of sub dots having a second diameter that is smaller than the first diameter, wherein a center of each of the plurality of sub nozzles is a same as a center of each of the plurality of main nozzles in the second direction, and wherein the control unit is configured to control the liquid droplet discharge head to form a dot array by the liquid droplets discharged from the plurality of main nozzles and the plurality of sub nozzles, the control unit controlling a timing of the discharge of the liquid droplets of the plurality of main nozzles and a timing of the discharge of the liquid droplets of the plurality of sub nozzles to be different from each other, wherein the dots in the dot array formed from the plurality of sub nozzles deviate in the second direction from the dots in the dot array formed from the plurality of main nozzles.