In short it is a method of printing art similar to screenprinting - in that each color layer must be kept separate. Each color is then printed using a "master" (or stencil) wrapped around an ink drum that rolls over the paper. All of my rispgraphs are made with the help of Risology Club in Nashville. I couldn't do this without their awesome studio space. If you are interested in learning more about the art form they offer risograph classes! This is how I got my start.