Patent ID: 7280259

Claim:
A method for printing a color proof from an initial halftone bitmap file comprising: a) creating a 10-75% press target from a target bitmap for a printing press from a digital file of said 10-75% press target; b) creating a proofer bitmap of a digital tint scale; c) imaging said proofer bitmap on a proofer forming a printed tint scale, wherein said printed tint scale has areas that correspond to proofer bitmap areas; d) measuring said tint scale areas identifying said proofer bitmap area that most closely matches said 10-75% press target; e) using said target bitmap with said identified proofer bitmap to create a spatial filter; f) sending an initial binary bitmap file to said spatial filter forming a filtered output; g) quantizing said filtered output to “n” levels to create a quantized image; h) transmitting said quantized image to a color printer; and i) printing said color proof on said color printer.