A Risograph or "RISO" looks like a copy machine but is actually a duplicator. The process is also commonly referred to as digital stamp printing or digital screen printing. Risograph printing is special because of the imperfections caused by unprocessed inks and the layering of images, known as registration and overprinting.
RISO printing is ideal for duplicating posters, comic books, zines, and other graphic art prints where the fidelity of the artist's intent of effect matters such as interesting textures, color mixing, and happy accidents. This means any RISO duplication is a unique instance of the original print that can be just as vibrant, creative and beautiful – and sometimes even better!
The Risograph at the VRC, a model MH945OU, is a two-drum machine, meaning you can print two ink colors at a time or print colors separately.
There are two methods of printing artwork from the Risograph:
1) using digital files from the guest computer or 2) using the scanner bed to scan original artwork