1. A relevance based print integrity method comprising: comparing current raster image data that define a document to be printed with golden raster image data that define a previous version of said document with a known quality; calculating a plurality of differences between said current raster image data and said golden raster image data; processing each of said plurality of differences to determine a relevance value of the difference and to assign said relevance value to said difference; generating and storing a list of said differences, wherein said list is ordered in terms of the relevance value assigned to each difference, wherein differences having a relevance value that is less than a select threshold are not included in said list of differences; classifying each of said differences as either: (i) a contour difference that relates to alphanumeric characters; or, (ii) a color difference that relates to the color of an image; said relevance based print integrity method further comprising outputting said list of differences to a user by at least one of: using a printer to print the list of differences on paper; using a video display to output the list of differences in textual or graphical format.