In the following sketch, the fundamental principle of risography is explained. Regardless of whether a stack of paper is printed with one or two colours, the process is always the same. What is central to the print method are components A, B and C of the sketch: The ink cartridge ( A ) is contained inside a printing drum ( B ). A template, the so-called master foil ( C ) is then stretched over the print drum and is then exposed by the master unit ( J ) and pulled through the device before being mounted on the drum. The paper feed wheel ( E ) feeds the cylinder, which is moving counterclockwise (direction of rotation I ), with paper sheets from the paper feeder ( F ). These run through the device in the print direction ( D ), are printed on once by the print drum and then passed on to the paper ejection ( G ) by the feed needle ( H ). The drawing simplifies the process, depending on the risograph model, the sheet of paper can be printed with a second colour. In that case, the feed needle does not pass the sheets to the paper ejector, but to the second print drum.