There are multiple colors that are unique to the Riso process including fluorescent colors which are very difficult to create digitally and through other print methods.
It's environmentally friendly
The Risograph uses plant-based ink and the machines are incredibly energy efficient with a minimum amount of waste.
It's cost effective
Riso combines the best of the digital and traditional world: a hand-made look and feel with the speed, low-cost and efficiency of a modern printer.