An image processing device adjusts black separately from chromatic colors and applies density adjustment capable of controlling the amount of color material according to the density. Such image processing device, capable of communicating with an image recording device, includes a color conversion unit that converts image data expressed in a first color space to color material amount data expressed in a second color space used by an image recording device; a density adjustment unit that increases or decreases the color material amount data based on a specified adjustment value; a dot breakdown unit that converts the increased or decreased color material amount data to dot quantity data expressed as a dot quantity for each of different sizes of dots formed by the image recording device; and a halftone process unit that converts the dot quantity data to data denoting whether or not the dots are formed.