×
192
Thus, RGB values (CR, CG, CB) after composition are (147, 145, 141).
FIG. 9A illustrates a preview screen displayed when silver toner is used in the foreground. FIG. 9B illustrates a preview screen displayed when silver toner is used in the background. While the same amount of silver toner to be applied is used for the foreground and the background, the coefficient k is smaller when silver toner is used in the background than when silver toner is used in the foreground. This indicates that an image is displayed in such a manner that the silver toner used in the background is less influential. Toner arrangement information is obtained from a printer, and the coefficient k is changed in accordance with the positional relationship with the process colors. Here, toner arrangement information obtained from a printer is used to determine a coefficient k. Alternatively, the coefficient k during composition may be changed by a user specifying the color or arrangement of a special toner.
FIG. 10A illustrates a preview screen displayed when silver toner is used in the foreground. FIG. 10B illustrates a preview screen displayed when clear toner is used in the foreground. While the amounts of the toners to be applied are the same, the coefficient k is smaller when clear toner is used in the foreground than when silver toner is used in the foreground. This indicates that an image is displayed in such a manner that the special toner is less influential.
