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Scanning from TWAIN and WIA
Xerox
®
DocuMate
®
4790
User’s Guide
7-144
When scanning in black and white, each pixel is reversed from black to white and white to black. When scanning
in grayscale each pixel is reversed to the opposite level of gray. When scanning in color each pixel is reversed to
the opposite color in the color wheel.
For example, you might choose this option if you are scanning pages that have been printed from newspaper
microfilm. Newspaper microfilm reverses black and white so that when viewed on a monitor, the text is white and
the paper is black.
The following example shows the original grayscale image and the inverted image.
The following example shows the original color image and the inverted image.
Mirror Image
The Mirror image option flips the image left-to-right.