Patent ID: 7050200

Claim:
A method for adjusting dot-gain for a halftone binary bitmap file comprising the steps of: (a) inputting a halftone binary bitmap file comprising binary pixels to a digital filter; (b) filtering the binary pixels with the digital filter generating a weighted sum of the binary pixels producing a first set of multilevel pixels; (c) filtering the binary pixels with a second digital filter producing a second set of multilevel pixels; (d) sampling the second set of multilevel pixels at a preset sample rate identifying a set of sampled multilevel pixels; (e) inputting the set of sampled multilevel pixels to a lookup table to create an output that is a threshold level for the set of sampled multilevel pixels; (f) using the first multilevel pixels and comparing to the threshold level for the set of sampled multilevel pixels and generating a binary pixel output; (g) collecting the binary output and forming an adjusted halftone binary bitmap; and (h) passing the adjusted halftone binary bitmap directly to a proofing system.