VSTwain1.TiffMultiPage = False
VSTwain1.TiffCompression = TiffCompression.Auto
If VSTwain1.Duplex <> DuplexMode.None Then
VSTwain1.DuplexEnabled = False 'ABILITA il DUPLEX
End If
If VSTwain1.FeederPresent Then
VSTwain1.FeederEnabled = True
'VSTwain1.AutoFeed = True 'SCANSIONE CONTINUA'
If VSTwain1.FeederLoaded Then
VSTwain1.Acquire()
End If
End If
I think scanner does not support CAP_AUTOFEED capability. You can see a list of capabilities supported by the scanner in our Advanced demo - run the demo and press the "Get Source info" button.