An inkjet recording apparatus comprising: an inkjet head, supplied with a curable ink, which is cured by applied active energy, and which has nozzle arrays having nozzles each of which discharges said curable ink and which are arranged in a first direction at a pitch P, the nozzle arrays being N nozzle arrays with N ≥ 4 of every color, which respectively discharge thick inks of at least four colors including cyan, magenta, yellow, and black, and the nozzle arrays being arranged to be shifted by P/N away from each other in the first direction; active energy imparting means for imparting the active energy to ink droplets discharged from the nozzles and jetted on a recording surface of a recording medium; retention means for disposing and retaining the inkjet head and the active energy imparting means along a second direction that is orthogonal to the first direction; scanning means for causing the retention means and the recording medium to relatively scan at a speed of equal to or more than 0.9 m/s in the second direction; movement means for causing the retention means and the recording medium to relatively move in the first direction in every scanning action by the scanning means; and control means for causing an image to be formed on the recording surface of the recording medium while causing the inkjet head and the active energy imparting means retained by the retention means to relatively scan each region of the recording medium plural times, wherein the curable ink includes an ink pigment and a polymerizable compound containing at least an N-vinyl lactam, the 90% diameter in cumulative volume distribution of the particle diameters of the ink pigment is equal to or less than 500 nm, and the content of N-vinyl lactam is 3% to 24%. an inkjet head, supplied with a curable ink, which is cured by applied active energy, and which has nozzle arrays having nozzles each of which discharges said curable ink and which are arranged in a first direction at a pitch P, the nozzle arrays being N nozzle arrays with N ≥ 4 of every color, which respectively discharge thick inks of at least four colors including cyan, magenta, yellow, and black, and the nozzle arrays being arranged to be shifted by P/N away from each other in the first direction; active energy imparting means for imparting the active energy to ink droplets discharged from the nozzles and jetted on a recording surface of a recording medium; retention means for disposing and retaining the inkjet head and the active energy imparting means along a second direction that is orthogonal to the first direction; scanning means for causing the retention means and the recording medium to relatively scan at a speed of equal to or more than 0.9 m/s in the second direction; movement means for causing the retention means and the recording medium to relatively move in the first direction in every scanning action by the scanning means; and control means for causing an image to be formed on the recording surface of the recording medium while causing the inkjet head and the active energy imparting means retained by the retention means to relatively scan each region of the recording medium plural times, wherein the curable ink includes an ink pigment and a polymerizable compound containing at least an N-vinyl lactam, the 90% diameter in cumulative volume distribution of the particle diameters of the ink pigment is equal to or less than 500 nm, and the content of N-vinyl lactam is 3% to 24%.