1. A method for generating an inverse mask toner image, the method comprising the steps of: determining image data for an image to be printed, said image data having color data for a first set of colors used in a first color model; and, generating an inverse mask toner image using the color data for one of the first set of colors; wherein the inverse mask toner image is generated based upon the color data for a selected one of the first set of colors so that the inverse mask toner image can be generated without first determining color separation toner images that define amounts of color toner to be applied to a receiver to form the image.