rotograph
/ˈrəʊtə(ʊ)ɡrɑːf/ /ˈrəʊtə(ʊ)ɡraf/Now chiefly historical
noun
A black and white photographic print in which positive and negative tones are reversed, formerly used especially for reproductions of manuscripts and the printed page.
Origin
Late 19th century; earliest use found in The Trade Marks Journal. From roto- + -graph, after photograph.
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