This is the same process as batik paper making. Instead of dipping a block in color, the artist dips a block in liquid wax and then prints on the paper. Once the paper is dry, the artist paints the paper with color and irons the paper to remove the wax.
Creative works by Japanese artist and illustrator Aoki Tetsuo. Check out more illustrations by Aoki Tetsuo available as art prints here. (via weandthecolor:)