Avision AD345GF User Manual page 92

Punch You can remove punch holes from the output
Hole scanned image when scanning punched document.
Removal Note the availability of this feature varies
depending on your scanner model.
Punch holes can not be removed when:
 Resolution is set lower than 150dpi
 The hole is near the edge of the document
 The holes are not aligned along the edge of the
 Punch Hole Removal is available only when
Original
document
"Auto Crop" is enabled. If either "Fixed to
Transport", "EOP (End of Page) Detection",
"Automatic Multiple", "Relative to Documents" is
selected from the Cropping option on the Paper
tab, the Punch Hole Removal option will be
disabled.
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Output image