PRINTING DEVICE AND PRINTING METHOD

摘要

The present invention addresses the problem of printing with a more appropriate method when using a UV-curable ink in an inkjet printer. As a solution, the printing device is provided with a head unit for discharging UV-curable ink droplets on a medium, and a control unit. The head unit performs main scanning movements that correspond to each of a previously set number (N) of printing passes ((N) being an integer of at least 3) with respect to the same region of the medium using a multi-pass mode. The control unit: decreases the density of the printing to be performed in the last (k) printing passes ((k) being an integer of at least 1 and less than (N)) below the density of the printing performed in the (N-k)th printing pass; and in the nozzle rows of the head unit, sets the density of the printing to be performed by each of the multiple nozzles of the nozzle rows of the head unit that will discharge the ink droplets for the (N-k+1)th printing pass to decrease gradually toward the back end of the head.