| 摘要 |
<p>Halftone screens are generated for each separation in accordance with the goal of avoiding overlapping whenever possible. Initially, the black separation (K) is halftoned, generating a dot with a number of ON pixels and OFF pixels in accordance with the area density of the black separation. Next, a first color separation (C) is halftoned, setting a number of the previous OFF pixels to ON. Then, if any white pixels remain, the second color separation (M) is halftoned, setting a number of the previously OFF pixels to ON. After the second color separation is halftoned, if any OFF pixels remain, the third color separation (Y) is halftoned, setting a number of the previous OFF pixels to ON. If during the processing of the second and third separations, it is determined that no OFF pixels exist to be turned ON, second and third layers of color is started, respectively superimposed over the first layer and then, if required, superimposed over the second layer. Each layer is started and arranged so that the additional colors forming the dot are not placed on any black areas.</p> |
