| 摘要 |
<p>The problem addressed by the present invention is to suitably achieve both conditions that suitably prevent running and conditions that heighten adhesiveness of ink to a medium when using a solvent UV ink or the like. As a solution, the present invention is provided with: an inkjet head (13) that, from a plurality of discharge openings, jets ink containing at least a pigment, an ultraviolet-ray-curable resin that is cured by means of ultraviolet rays, a photoinitiator, a volatile organic solvent, and a ketone-based or terpene-based compound, having a viscosity of 3-18 mPa·sec inclusive (at room temperature of 25°C) and a viscosity in the state of the volatile organic solvent having been vaporized/eliminated of at least 20 mPa·sec (at room temperature of 25°C); a printing heater (17) that heats ink droplets that have impacted the surface of a medium, vaporizing/eliminating the volatile organic solvent contained in the ink droplets; and a UV radiating means (16) that radiates ultraviolet rays at the ink droplets from which the volatile organic solvent has been vaporized/eliminated at the surface of the medium.</p> |
