Inkjet printing apparatus, program, and recording medium

An inkjet printing apparatus comprising:

• a head configured to eject ink which hardens if being subjected to irradiation with light, onto a recording medium;
• irradiators configured to irradiate the ink ejected from the head, with light;
• and
• an irradiation controller configured to control light irradiation of the irradiators,
• wherein the head is configured to relatively reciprocate with respect to a mounting table for mounting the recording medium,
• the plurality of irradiators is disposed, such that they are aligned in the relative reciprocation direction and the head is disposed between two irradiators, and is configured to relatively reciprocate in the same direction as the relative reciprocation direction with respect to the mounting table, together with the head,
• on each of the plurality of irradiators, a plurality of irradiating elements is mounted, such that at least two irradiating elements of the plurality of irradiating elements are disposed at positions different from each other in the distance in the relative reciprocation direction from at least one nozzle of the nozzles of the head,
• the irradiation controller is configured to perform control for selecting an irradiating element having a distance from a certain nozzle, smaller than that of an irradiating element which has the maximum distance difference with respect to the distance between the certain nozzle and an irradiating element selected as an irradiating element for ink ejected from the certain nozzle on the outward way, on the homeward way.