Lithography is the general term. There are numerous methods depending on the desired result, for instance using an offset can produce full colors pressing one a

Lithography is the general term. There are numerous methods depending on the desired result, for instance using an offset can produce full colors pressing one at a time. https://gallery.lib.umn.edu/exhibits/show/pre-separated-art/press-halftone https://gallery.lib.umn.edu/exhibits/show/pre-separated-art/...