One of printing modes including a first mode in which printing is performed by an even number of scans and a second mode in which printing is performed by an odd number of scans, the odd number being three or more, is executed. In the first mode, printing is performed using a first mask pattern in which the nozzle array is divided into a plurality of blocks each including a first number of continuous nozzles and an ink ejection area or non-ejection area is set for each of the blocks. In the second mode, printing is performed using a second mask pattern in which the nozzle array is divided into a plurality of blocks each including a second number of continuous nozzles, the second number being less than the first number, and an ink ejection area or non-ejection area is set for each of the blocks.