The process of changing the ink color used in a Risograph printer involves exchanging the imaging unit, often referred to as a cylinder or cartridge, that contains the specific color. These units, containing the colored emulsion, are designed to be replaceable, allowing for multi-colored prints from a single machine. Each color requires its own dedicated unit.
The ability to readily change colors expands the creative possibilities of Risograph printing, allowing for layered designs and vibrant, unique outcomes. This flexibility has contributed to its popularity in artistic and design communities. Historically, this capability distinguished Riso printing from traditional single-color duplication methods. The modular design also allows for maintenance and replacement of individual color units without impacting the entire machine.