The Risograph duplicator was created by the Riso Kagaku Corporation in Tokyo in 1986. Designed as a fast, affordable alternative to offset printing for schools and offices, it works by burning a stencil master onto a thermal plate and pushing ink through it via a rotating drum — one color per pass.
By the 2010s, artists and independent publishers had rediscovered the machine. Its limitations — spot colors only, slight misregistration, halftone grain on uncoated paper — became its appeal. Riso printing became the medium of choice for zines, art prints, and small-run publications. Studios like Risotto in Glasgow, Perfectly Acceptable in Philadelphia, and Knust in Nijmegen built entire communities around the process.
On the web, the risograph aesthetic translates mechanical imperfection into CSS: offset layers via pseudo-elements, multiply blend modes for ink overlap, halftone dot patterns via radial gradients, and limited palettes that honor the constraint of spot-color printing. It is design that looks printed, not rendered.