Patent ID: 7145697

Claim:
A method of show-through image mitigation comprising: placing a bound collection of duplex printed pages on an image scanning device; scanning a facing page of the bound collection; receiving image information comprising facing page image information, backside image information, and adjacent page image information; scanning the adjacent page without the intervening facing page and backside image information; determining scanned density data for the facing page substrate and effective absorbency data for the combined back and adjacent page information; determining show-through compensated density data; determining normalized reflectance data that is valid for an entire job by averaging over margin areas in which there is no printing on any page; automatically transforming the show-through compensated density data for one or all of the images into show-through compensated reflectance image data that is valid for an entire job by coupling the normalized reflectance data with the show-through compensated density data; and, removing show-through image information based on the density and reflectance calculations, leaving only substantially the facing page image information.