An apparatus for printing halftone recipe color images which comprises a printhead (500). The printhead (500) prints a first color (800) at a first intensity. The printhead (500) prints a second color (802) at a second intensity. The first and second colors (800, 802) are superimposed and coextensive.
Trapping graphics during pre-press workflow involves intensive computation. In this invention, the trapping engine uses simple bounding boxes, colors, and temporal order information, to eliminate the possibility of trapping many pairs of objects without ever having to calculate their exact shapes. By considering the temporal order of the objects in a page, such a z-order display list, the trapping engine can quickly reject the possibility of trapping in areas where it is not necessary.
The present invention is a method of adjusting a color in a color proof (112) printed with primary colors cyan, magenta, yellow, and black. It is accomplished by: a) combining the cyan bitmap (2), magenta bitmap (4), yellow bitmap (6), and black bitmap (8) into one multi-bit image (202) and b) imaging each of the primary colorants with the multi-bit image (202).
