An inkjet printing apparatus comprising: a head (11, 21) configured to eject ink, which hardens if being subjected to irradiation with light, onto a recording medium; irradiators (12A, 12B, 25) configured to irradiate the ink ejected from the head (11, 21), with light; and an irradiation controller configured to control light irradiation of the irradiators (12A, 12B, 25), wherein the head (11, 21) is configured to reciprocate relatively to a mounting table for mounting the recording medium, the irradiators (12A, 12B, 25) are disposed such that they are lined up in the relative reciprocation direction and the head (11, 21) is disposed between two of the irradiators (12A, 12B, 25), the irradiators (12A, 12B, 25) being configured to relatively reciprocate in the same direction as the relative reciprocation direction with respect to the mounting table, together with the head (11, 21), characterised in that on each of the plurality of irradiators (12A, 12B, 25), a plurality of irradiating elements (E, E1, E2, E3) is mounted, such that at least two of the plurality of irradiating elements are disposed at different distances in the relative reciprocation direction from at least one of the nozzles (n) of the head (11, 21), the irradiation controller is configured to select an irradiating element for the homeward way such that a distance difference between: - a distance between a certain nozzle (n) and an irradiating element selected as an irradiating element for irradiating ink ejected from that certain nozzle (n) on the outward way, and - a distance between the certain nozzle (n) and the irradiating element to be selected as the irradiating element for the homeward way is smaller than that for another irradiating element in the homeward way for which the distance difference becomes maximal. a head (11, 21) configured to eject ink, which hardens if being subjected to irradiation with light, onto a recording medium; irradiators (12A, 12B, 25) configured to irradiate the ink ejected from the head (11, 21), with light; and an irradiation controller configured to control light irradiation of the irradiators (12A, 12B, 25), wherein the head (11, 21) is configured to reciprocate relatively to a mounting table for mounting the recording medium, the irradiators (12A, 12B, 25) are disposed such that they are lined up in the relative reciprocation direction and the head (11, 21) is disposed between two of the irradiators (12A, 12B, 25), the irradiators (12A, 12B, 25) being configured to relatively reciprocate in the same direction as the relative reciprocation direction with respect to the mounting table, together with the head (11, 21), characterised in that on each of the plurality of irradiators (12A, 12B, 25), a plurality of irradiating elements (E, E1, E2, E3) is mounted, such that at least two of the plurality of irradiating elements are disposed at different distances in the relative reciprocation direction from at least one of the nozzles (n) of the head (11, 21), the irradiation controller is configured to select an irradiating element for the homeward way such that a distance difference between: - a distance between a certain nozzle (n) and an irradiating element selected as an irradiating element for irradiating ink ejected from that certain nozzle (n) on the outward way, and - a distance between the certain nozzle (n) and the irradiating element to be selected as the irradiating element for the homeward way is smaller than that for another irradiating element in the homeward way for which the distance difference becomes maximal. - a distance between a certain nozzle (n) and an irradiating element selected as an irradiating element for irradiating ink ejected from that certain nozzle (n) on the outward way, and - a distance between the certain nozzle (n) and the irradiating element to be selected as the irradiating element for the homeward way