What is NCR?
NCR stands for No Carbon Required and it refers to a paper that has been pre treated to produce duplicate copies of the original when pressed with either a pen or an impact printer like a Dot Matrix, so there is no need for the old fashioned "blue carbon paper".
What is Fanapart?
Fanapart glue is applied to one edge of a stack of carbonless sheets. The glue penetrates the coated sides of the sheets, causing them to stick together. The uncoated sides of the sheets do not accept the adhesive and will not stick together. So the 2 or 3 part sets stick together but the sets don't stick to the other sets, proper magic!