A printing head configured to apply white light-blocking ink, specialty gloss ink, and color ink is controlled, and the inks are applied so that the color ink, the specialty gloss ink, and the white light-blocking ink are formed in this order onto a printing medium having light-transmissive properties. When the printing medium is viewed from the surface on which ink has not been formed, a white ink layer is formed behind the color ink layer and the metallic ink layer, and light-blocking properties can be ensured. Because the amount of the metallic ink can be reduced, adequate expression of the color ink can be ensured.