Core Documentation-Device

• 2. Show device UI

  Check this option to instruct ScanToPDF to display the TWAIN UI (User Interface) when a scan is initiated. This will often enable changes to the scan settings to be made. It will also often enable some form of image preview.

• 3. Show progress

  Checking this option indicates that the progress dialog box should be displayed when scanning is initiated.

• 4. Paper source

  Select a source from the drop down box. The sources presented will depend on the options available with the selected scanner.

• 5. Duplex

  Checking the Duplex options indicates that Duplex scanning should be performed (scanner functionality dependent

• 6. Paper size

  Select a size from the drop down box. The sizes presented will depend on the options available with the selected scanner.

• 7. Use auto-feed

  Enable scanner auto-feed. Scan at full speed when the auto document feeder (ADF) is selected and the scanner supports it.
  
  The 'next' page is fed and scanned before the driver receives the acquire command which makes multi-page scanning faster.

• 8. Custom size (scanned page)

  Use the spinners to create a custom page size or select a preset value from the drop down box and modify the settings.

• 9. Orientation

  Choose the scanning orientation as portrait or landscape.

• 10. Colour mode

  Choose a colour mode from the drop down box. The options presented will depend on the options available with the selected scanner.

• 11. Resolution

  Choose a resolution from the drop down box. The options presented will depend on the options available with the selected scanner.

• 12. Brightness, contrast, threshold

  Use the spinners to set the required values.

• 13. Auto-brightness

• 14. Auto-negate

  Controls the 'auto-negate' mode. Auto-negate mode analyzes each incoming B&W (1-bit/pixel) image during scanning. If the image is more than 80% black, it is ‘negated’ - black and white are reversed.
  
  A surprising number of scanners incorrectly deliver negative images under certain 
  circumstances, and this mode compensates for that.

• 15. Save

  Use the Save button to save the changes made to the device settings.