in march 1985 klas urbons founded the "museum für fotokopie" in mülheim an der ruhr, an international forum for technology and art produced with photocopiers. the museum built up one of the most important collection of art in this field, covering the technological and artistic history of modern photocopying art. more than 20 exhibitions of copy art produced by artists from germany and abroad have been organized by the museum as well as competitions and workshops. the museum also collected several devices from the very early stages of this printing technique in the 1950s: in germany called blitzkopie and in the usa called xerography. the collection of about 100 copying machines and consumables, technical library & documentation as well as a prospectus collection (since 1950) is hosted by the german museum of technology (berlin) in 1999.