Canon 4204B019AA User Manual page 635

With network connection, you cannot specify Brightness and Contrast.
Click Preview to preview the image.
5.
The preview image appears on the right. Drag
Important
With network connection, scan without preview when scanning documents from the ADF (Auto
Document Feeder). If you preview, place the document again and scan.
If there is document left in the ADF (Auto Document Feeder) after previewing, press the OK
button on the Operation Panel of the machine and remove the document.
Click Scan.
6.
When scanning is completed, the scanned image appears in the application.
to specify the scan area.
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