Mixed Original types
Diffusion Dither simulates gray values using collections of black and white pixels without disturbing
sharp edges.
Hybrid combines halftones and diffusion in a manner determined by the local pixel classification.
Text
Diffusion Dither simulates gray values using collections of black and white pixels without disturbing
sharp edges.
Threshold/High Contrast produces a very high contrast reproduction of black and white inputs.
Photo
125 lpi for high image quality results - recommended setting
106 lpi for medium image quality results
85 for low image quality results
Background suppression should be ON if the photo does not extent to the lead edge of the paper as it
enters the scanner.
Tip
One of the advantages of build job is the ability to set Original Type for each section or page of the
build job.
For information on Build Job see Using Build Job.
Tip
It is best practices to proof a job when you make image quality adjustments.
About Contrast
The Contrast control enhances the tonal separation, especially in the midtones. Increasing contrast
moves midtones (gray) toward black or white. Decreasing contrast makes blacks and whites appear
gray.
Limits of Contrast controls
The Contrast control on the Xerox Nuvera applies to all of the pixels in an image at once. In other words,
changing the contrast in the midtones of your image will also affect highlights and shadows.
If contrast is increased too much, midtone detail may be enhanced, but at the expense of highlight and
shadow content. Differences between adjacent pixels become greater, causing shadow areas to turn
completely black, while highlight areas turn completely white (see Figure 1).
14-29Xerox
®
Nuvera
®
User Guide and Training Aid (UGTA)
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