Perform bottom plate cleaning before you execute duplex printing to prevent smudges on the back side of the paper.
Also perform bottom plate cleaning if ink smudges caused by something other than print data appear on the printed page.
The procedure for performing bottom plate cleaning is as follows:
Bottom Plate Cleaning
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Select Cleaning from the pop-up menu on the Canon IJ Printer Utility.
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Click the Bottom Plate Cleaning icon.
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Load paper in the printer.
As instructed in the dialog, fold the A4 size or Letter size plain paper in half horizontally, and then unfold the sheet.
Fold one side of the paper in another half, aligning the edge with the center crease, then unfold the paper.
With the ridges of the creases facing up, load the paper into the cassette (lower), so that the edge of the half with no crease faces away from you.
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Perform the bottom plate cleaning
Make sure that the printer is on and then click OK.
Bottom plate cleaning starts.
