The risograph is a digital duplicator that essentially screen prints every image, one color layer at a time. Because of this process, each print is unique and a little bit different. 
Hand signed on bottom right corner.

UFO Kuni 5" x 7" 2-color

Baking Kuni 8.5" x 8.5" 3-color

Knitting Kuni 8.5" x 11" 3-color