A risograph can look like a traditional copier to someone, but it is not. It is a duplicator, with a printing technique reminiscent of screen printing. On a fine foil, made of banana peels, the risograph creates the so-called master, which is stretched on a drum filled with ink. The drum then rotates at high speed and pushes the ink through the master onto the paper, where it is absorbed and creates a unique look and texture.
The risograph prints with a limited palette of original soy-based colors. During printing, there is always one drum with one specific color in the risograph (in newer models there are 2 drums) and therefore if we want to print multicolor graphics, we must let the paper pass through the risograph as many times as the number of colors we want to use. Due to the fact that RISO colors are not opaque, it is possible to combine them and thus receive various interesting shades.