The Options In The Twain Interface - Xerox DocuMate 4760 Benutzerhandbuch

The Options in the TWAIN Interface

• Mode—select a scanning mode:
Black & White to scan in black and white. For example, letters and memos are usually scanned in black and
white.
Grayscale to scan items such as documents containing drawings or black and white photographs.
Color to scan color photographs and other color items. Color scans have the largest file size.
• Resolution—drag the slider to the right or left to adjust the dots per inch (dpi) of the resolution. The higher
the dpi setting, the sharper and clearer the scanned image. However, higher dpi settings take longer to scan
and produce larger files for the scanned images.
• Brightness—sometimes an image is scanned with the brightness and contrast set too light or too dark. For
example, a note written with a light pencil may need to be scanned darker to improve legibility. Increasing or
decreasing the brightness makes the scanned image lighter or darker.
• Contrast—the difference between the lighter and darker portions of the image. Increasing the contrast
emphasizes the difference between the lighter and darker portions, decreasing the contrast de-emphasizes
that difference.
Deskew—select this option to let the scanner automatically determine if a page is skewed, then straighten its
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image. If the page is fed through at too great of an angle, the image may not straighten correctly. In that
case, re-scan the page using the paper guides to feed the paper in straight.
Duplex—scan both sides of the page. If this option is not selected, the scanner will scan the face-down side of
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the page only.
• Filter—filter is the ability of your scanner to automatically remove a color from a scanned image. For example,
if you are scanning a letter with a red watermark, you can choose to filter out the red so the scanned letter just
shows the text and not the red watermark. Color filter applies to Black & White or Grayscale scanning modes.
AutoCrop to original—select this option to let the scanner automatically determine the size of the item being
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scanned.
Always use the paper guides on the scanner so the page is not skewed. Skewed pages may not crop properly.
• Reduce Moiré patterns—Moiré patterns are wavy, rippled lines that sometimes appear on the scanned
images of photographs or illustrations, particularly newspaper and magazine illustrations. Selecting Reduce
Moiré Patterns will limit or eliminate moiré patterns in the scanned image. This option is only available at lower
resolutions.
Define page size—click this option to activate the Define button. Then click the Define button to see the
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Define page size dialog box for selecting a specific page size.
Standard—click the menu arrow and choose a page size from the list.
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• Custom—enter the horizontal and vertical page dimensions in the boxes. Click the name of the units,
inches or mm (millimeters), to toggle between them.
Click OK.
The currently selected page size appears in the middle of the TWAIN interface on the left-hand side.
136 Xerox DocuMate 4760
User's Guide