DocuMate 765 Scanner User’s Guide 61
Scanning from TWAIN
Document Settings Tab
Crop image to guide width—this option tells the scanner to look at the
input tray’s paper guides and crop the final image to that size. For
instance, if the selected paper size is for an U.S. Letter but you place an
A4 page in the scanner, adjust the paper guides to the edge of the paper,
and the scanner automatically crops the sides from the final image.
Crop image to paper length—this option tells the scanner to crop the
final image the bottom of the page being scanned. This option may
occasionally be grayed out, not all TWAIN scanning applications support
this feature.
Double Feed Detection (DFD) is the scanner’s ability to detect when two
or more pages are fed through the scanner at the same time.
When this option is turned on, ultrasonic waves are aimed at the
document to detect multiple pages by the level at which the waves
pass through the pages. The accuracy of this sensor depends on
paper thickness and whether or not creasing is in the original
document. Standard printer paper between 16lb and 20lb works best
with this feature.
You can set the scanner’s sensitivity level and what action you want
the scanner to take when the double-feed is detected. Detect only
means that your scanner will beep if a double feed is detected but
continue scanning. Detect and stop means that when the double feed
is detected, scanning stops and you can take the pages out of the
scanner and place them back on the stack to be scanned again.
DFD Sensitivity allows you to change how sensitive the sensor is. Move
the slider to the left or right to adjust this setting.
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