Canon PIXMA MG4200 Series On-Screen Manual page 783

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Surrounded by Extra White Areas
S711
Scanned Image Is Surrounded by Extra White Areas
Check: Specify the scan area.
Click (Auto Crop) in whole image view of ScanGear (scanner driver) to automatically display the
cropping frame (scan area) according to the item size.
You can also manually specify the scan area in thumbnail view or when there are white margins along the
item (for example, in photos), or when you want to create custom cropping frames.
Adjusting Cropping Frames
> Scan Results Not Satisfactory > Scanned Image Is
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