NOTE Some software programs convert text or graphics to raster images. In these cases, the Photographs settings also control text and graphics.

RGB Color

Five values are available for the RGB Color setting:

●Select Default (sRGB) for most printing needs. This setting instructs the printer to interpret RGB color as sRGB, which is the accepted standard of Microsoft and the World Wide Web Organization (WWW).

●Select Image optimization (sRGB) to enhance documents in which the content is mainly bitmap images, such as .GIF or .JPEG files. This setting instructs the printer to use the best color matching for rendering sRGB, bitmap images. This setting has no effect on text or vector-based graphics.

Using glossy media in combination with this setting provides the maximum enhancement.

●Select AdobeRGB for documents that use the AdobeRGB color space rather than sRGB. For example, some digital cameras capture images in AdobeRGB, and documents that are produced with Adobe PhotoShop use the AdobeRGB color space. When printing from a professional software program that uses AdobeRGB, it is important that you turn off the color management in the software program and allow the printer software to manage the color space.

●Select None to instruct the printer to print RGB data in raw device mode. To render documents properly when this option is selected, you must manage color in the program that you are using or in the operating system.

CAUTION Use this option only if you are familiar with the procedures for managing color in the software program or in the operating system.

●Select Custom Profile when you want to duplicate the printed output from other printers or use special effects, such as sepia tones. This setting instructs the printer to use a custom input profile to more accurately predict and control color output. You can download custom profiles from http://www.hp.com.

Edge Control

The Edge Control setting determines how edges are rendered. Edge control has three components: adaptive halftoning, Resolution Enhancement Technology (REt), and trapping. Adaptive halftoning increases the edge sharpness. Trapping reduces the effect of incorrect color alignment by slightly overlapping the edges of adjacent objects. The color REt option smooths the edges.

NOTE If you notice white gaps between objects, or if you notice areas that have a slight shadow of cyan, magenta, or yellow at the edge, choose an edge-control setting that increases the trapping level.

Four levels of edge control are available:

●Maximum is the most aggressive trapping setting. Adaptive halftoning and color REt settings are on.

●Normal is the default trapping setting. Trapping is at a medium level. Adaptive halftoning and color REt settings are on.

●Light sets trapping at a minimal level. Adaptive halftoning and color REt settings are on.

●Off turns off trapping, adaptive halftoning, and color REt.

140 Chapter 6 Color

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