Press [Reduce / Enlarge].
Select a ratio, and then press [OK].
Place the originals, and then press [Start].
You can also select a preset ratio on the initial screen, by pressing the shortcut key.
You can select a ratio regardless of the size of an original or copy paper. With some ratios, parts of the image might not be copied or margins will appear on copies.
For details about the base point, see Reducing or Enlarging Originals.
You can change reproduction ratios shown on the initial screen under [Reproduction Ratio] in User Tools. For details, see Reproduction Ratio.