An image processing apparatus includes a scanner that acquires an image, and a processor that changes areas of a plurality of dot patterns in accordance with gradation values in the image using a plurality of dither matrices, and generates a binary image based on the plurality of dot patterns. A change rate of each of the areas differs from each other. The plurality of dither matrices include a first dither matrix and a second dither matrix. A first change rate of a first area of a plurality of first dot patterns formed based on the first dither matrix and a second change rate of a second area of a plurality of second dot patterns formed based on the second dither matrix differ.