Xerox CX manual 112

112 Chapter 10—Job parameters

Parameter

Option

CMYK rendering intent

Description

Rendering intent enables you to compress out-of-gamut colors into the color capability of the press you are using. The desired rendering intent should be selected to preserve the important aspects of the elements and applied to RGB and CMYK elements.

All printers, monitors and scanners have a gamut or range of colors that they can output (or view in the case of a scanner). If a color needs to be output and is outside the gamut of the output device, it must be mapped or approximated to some other color, which exists within the gamut. Rendering Intent enables you to compress out-of- gamut colors into the color capability of the press you are using. You can set any rendering intent value for RGB elements by selecting the required from the Rendering intent options list. The default value for RGB is Perceptual (photographic). The default value for CMYK is Relative Colorimetric.

There are several methods that can be used when translating colors from one color space to another. These methods are called Rendering Intents because they are optimized for various uses. When working with ICC profiles, it is important that you select the Rendering Intent that best preserves the important aspects of the image. Each rendering method specifies a CRD for color conversions. You can modify the rendering method to control the appearance of images, such as prints from Microsoft Office software or RGB photographs from Photoshop software.

The following options are available:

●Auto: Automatically applies different rendering intents to each object type (images, text, and graphics). Use this option when your file includes different objects on the same page—for example, a presentation that includes jpg pictures, text, and Microsoft Excel graphs. If RGB images and CMYK graphic elements are included on the same page, the RGB images will use perceptual rendering intent, while the CMYK graphic elements will use relative rendering intent.

Note: Preserve pure CMY colors is not affected by this rendering intent option.

●Relative colorimetric: Some closely related colors in the input color space can be mapped to the closest possible color in the output color space. This reduces the number of colors in the image.

●Absolute colorimetric: Select this method for representing “signature colors“. Colors that are highly identified with a commercial product. Colors that fall inside the output color space are matched very accurately.

●Saturation: Select this method for artwork and graphs in presentations. In many cases, this option can be