Patent ID: 8730525

Claim:
A method of proofing screened printing data while maintaining raster information having binary tonal values, the method comprising: providing screened printing data having raster information wherein the raster information comprises screen resolution, screen width, screen angle, dot shape, and tonal values comprising only binary tonal values of 0-percent tonal values, and 100-percent tonal values; and filtering the screened printing data, wherein filtering comprises a softening algorithm that uses a softening radius applied to the raster information contained in the screened printing data, and wherein the softening algorithm has a parameters set based on resolution of a corresponding original image, said screen resolution, and resolution of a corresponding target image; and generating intermediate tonal values when applying the filtering and the softening algorithm and radius to the raster information, wherein intermediate tonal values are tonal values with an application of color between “0” and “100” percent; generating, by a proofer, a true-to-color proof of the original image by applying a high-quality color space transformation to the binary and intermediate tonal values; wherein the steps are carried out on a processor.