A printing device prints an object on a medium by inkjet printing. The printing device includes: a solid print nozzle discharging solid-color printing ink; a color printing nozzle discharging color printing ink; and a main scan driver prompting the nozzles to perform main scans in which the nozzles discharge the ink droplets while moving in a main scanning direction previously set, wherein with a density of ink dots formed on the medium by one nozzle in a preset number of the main scans being defined as a main scan dot density, the main scan driver prompting the solid print nozzle to form ink dots at a first main scan dot density, the main scan driver further prompting the color printing nozzle to form ink dots at a second main scan dot density lower than the first main scan dot density.