A print controller controls a print process in which black ink having permeability to a recording medium and chromatic color ink having permeability to the recording medium different from the permeability of the black ink are used to form an image on the recording medium. The subject pixel setting unit sets, as a subject pixel, one pixel that satisfies a first condition that the pixel is a black pixel, a second condition that a plurality of peripheral pixels that are located adjacent to the pixel and that surround the pixel include at least one chromatic pixel, and a third condition that gradation level of black changes discontinuously between the pixel and at least one of the at least one chromatic pixel. The bleed suppressing unit executes a bleed suppression process to a set of pixel data corresponding to the subject pixel to suppress bleeding of the black ink on the recording medium.