Monoprint

Monoprints are made when an artist alters the image on an already etched and inked plate by adding ink to the surface. When printed, this addition produces an impression that appears different from a conventionally printed impression from the same plate. By manipulating the ink on the plate in each successive printing, the artist creates a series of unique impressions.

Source: http://www.ifpda.org/content/collecting_pr...