Xerox P8EX Spire CXP8000 Color Server - User Guide - Page 57

Setting PPD File Parameters 43 Table 4: PPD parameters PPD Parameter Image Noise Printing Options No (default) applies no image noise to your job. Noise 2-10 apply image noise. The higher the level, the smoother the vignettes appear. Color Mode Grayscale prints all pages using black (K) toner only. Color prints all pages using all CMYK toners. If you selected Color, select the Print grays in black toner option in the Gray RGB list to print RGB gray images using black toner only. If you want grayscale CMYK elements to be printed using black toner only, you need to select Perceptual as the rendering intent. RGB Workflow This option changes gamma values, thus producing more color depth for RGB images. To use the embedded CSA, select Use Source CSA. To replace use a Spire or Adobe CSA, select Use Spire RGB 1.8, Use Spire RGB2.1, Use Spire RGB 2.4, Use sRGB, or Use Adobe RGB. Gray RGB Select Print grays using CMYK to print grayscale CMYK elements using black toner only. Select Print grays in black toner to print RGB gray images using black toner only. Rendering Intent for RGB Rendering intent defines how colors are compressed from CIELAB values to printer color space. Relative Colorimetric provides an accurate general-purpose gamut mapping for all applications. The lowest density is mapped to white. Absolute Colorimetric preserves the substrate tint. Saturated (presentation) produces saturated colors that are suitable for office environment applications -for example, text documents and presentations. Perceptual (photographic) yields the most effective results on continuous tone and images. Saturated (presentation) and Perceptual (photographic) are the most effective rendering intent methods for RGB images.