Scan Originals Larger Than The Platen - Canon Pixma MG6821 Online Manual

Scan Originals Larger than the Platen

By using the stitch function of IJ Scan Utility, you can scan the left and right halves of an item larger than the
platen and combine them back into one image. Items up to approximately twice as large as the platen are
supported.
Refer to the following for details.
Scanning Originals Larger than the Platen (Image Stitch)
Scanning Originals Larger than the Platen (Image Stitch) (Mac OS)
(Windows)
56