In an inkjet printer, an ejecting part for K color is previously selected as an ejecting part for outputting three values used for formation of a large dot, formation of a medium dot, and non-ejection (step S12). In the course of image recording (steps S13, S14, and S15), three values are output regarding K color, and four values used for formation of a large dot, formation of a medium dot, formation of a small dot, and non-ejection are output regarding C, M, and Y colors. Thus, even if the quality of a dot in K color is reduced at the time of outputting four values, a high-quality dot can be formed regarding K color, so that the quality of a recorded image can be improved in a case where line drawing or a character or the like is recorded.