Xerox
®
DocuMate
®
3640
User’s Guide
168
Skip Blank Originals
Select this option to have the scanner detect if a blank page has been fed through the scanner, and
remove it from the final file. Typically you might use this option when scanning a stack of two-sided
pages which have a number of blank sides.
• Blank threshold—you can use the Threshold slider to fine tune the sensitivity of the blank image
detection. The results will depend on the scan settings and the types of documents being scanned.
In general leave the threshold level at the default setting if you are scanning good-quality
documents printed on standard 20lb printer paper. Try lowering the sensitivity level if your
documents contain light colored text or drawings so those pages are not detected as blank. Raise
the sensitivity level if you are scanning double-sided light-weight paper where images from the
opposite side of the page may appear in the image of the blank side.
Clean Up Edges
Select this option to remove any thin lines from around the edges of the final scan. This option will fill
the margins of the image with the detected edge color. When you select this option, the Width input
field will automatically enable for you to input the size of the area you want to have filled with the
background color. You can specify a fill size between approximately 0.04 to 0.39 inches (1 mm to 10
mm).
Automatic Image Cropping
Depending on the scanner model and installed software, there may be more than one auto cropping
option in the interface.
• Crop to original—select this option to let the scanner automatically determine the size of the
item being scanned. This option is only available if the scanner supports this feature. This option
may occasionally be grayed out as not all scanning applications support this feature.
Always properly adjust the paper guides to the width of the paper in the input tray so that the
pages feed into the scanner as straight as possible. Skewed pages may not crop properly.
• Crop to length—this option tells the scanner to crop the final image to the bottom of the page
being scanned. This option is only available if the scanner supports this feature. This option may
occasionally be grayed out as not all scanning applications support this feature.
Always properly adjust the paper guides to the width of the paper in the input tray so that the
pages feed into the scanner as straight as possible. Skewed pages may not crop properly.
Compression Options
There are two types of image compression functions used during scanning. The input compression
option is compressing the image when transferring it from the scanner to the TWAIN driver on the
computer. The output compression option is the TWAIN driver compressing the image before it sends
the image to the scanning application. In the scanning interface the input compression option is
Compress transfers and the output option is Compression.
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General
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