Canon PIXMA MG4200 Series On-Screen Manual page 824

When you are using the preview screen, the screen below is displayed so that you can check the
orientation.
1.
Rotate
If you press the right Function button, the original rotates by 180 degrees.
2.
Rescan
If you press the left Function button, the original is rescanned.
Press the OK button to start scanning.
When scanning is finished:
The Document setting screen appears on the LCD after scanning the first sheet of original.
Remove the first sheet of original from the platen glass and load the second sheet on the platen
glass, then press the OK button.
The machine starts scanning the second sheet of original and copying.
Note
If you do not need more scanning, press the left Function button. The machine starts copying.
You can add the copying job while printing.
Adding the Copying Job (Reserve copy)
If you use this function in combination with Two-sided copy, the Document setting screen is
displayed after scanning the second sheet of original is complete. Follow the on-screen
instructions to scan the third and fourth sheet of original.
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