Original print data includes ejection information to form a plurality of pixel arrays each including pixels arranged in a first direction. A plurality of divided print data are generated based on the ejection information included in the original print data. At least one of divided print data includes the ejection information to form a first pixel array and a second pixel array, not a third pixel array. The second pixel array is included in the plurality of pixel arrays aligned in a second direction corresponding to the original print data and is not adjacent to the first pixel array in the second direction. The third pixel array is included in the plurality of pixel arrays aligned in the second direction corresponding to the original print data, and is between the first pixel array and the second pixel array in the second direction and adjacent to the first pixel array.