Carbonless copy paper, non-carbon copy paper, or NCR paper is an alternative to carbon paper, use to make a copy of an original, handwritten document without the use of any electronics. The process was invented by chemists Lowell Schleicher and Barry Green, working for the NCR Corporation, as a biodegradable, stain-free alternative to carbon paper. Early product literature piggybacked on NCR's corporate name by calling the paper No Carbon Required paper.