Making Art with copy machines aka Xerography. The copy machine was invented by Chester F. Carlson. Its potential for modifying images was quickly discovered by some artists. It was used by Andy Warhol in his Illustration work before he became a pop-artist.
In 1968 the first Color Copier was produced. At that time artist Sonia Sheridan began working with the 3M Company to produce work on this new machine. Among the early practitioners of Copy art are , Bern Porter, Barbara Astman, Marisa Gonzalez, Joan Lyons, Dinar Dar, Sarah Jackson, Jurgen O. Olbrich