Adjusting The Resolution - Visioneer PATRIOT 780 SCANNER User Manual

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DJUSTING THE ESOLUTION
Resolution determines the amount of detail you see in the scanned image. The
resolution setting for a scan is in dots-per-inch (dpi). The higher the
resolution, the finer the details. However, higher dpi settings also take longer to
scan and produce larger file sizes. For black and white documents, 75 to 150
dpi will make a copy of similar quality to the original. If you are scanning color
documents or photographs to make copies, 150 to 200 dpi will make a direct
size copy of similar image quality to the original. You would use a higher dpi
setting to enlarge a picture from the original size.
To adjust the resolution:
1. To use one of the preset resolutions for typical scanned items, click one of
the options in the list.
2. To set the resolution manually, drag the Resolution slider to the left to
decrease the resolution or to the right to increase it. The scanner has a
Resolution range of 50dpi to 600 dpi.
3. Click Reset to return the resolution to its original setting.
Reduce Moiré—Moiré patterns are wavy, rippled lines that sometimes appear
on the scanned images of photographs or illustrations, particularly newspaper
and magazine illustrations. Select the Reduce Moiré option to limit or
eliminate these patterns during scanning. This option is only available at lower
resolutions.
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