Even if you place originals in the ADF or on the exposure glass correctly, margins of a few millimeters on all four sides of the original might not be copied.
2 ± 1.5 mm (0.08 ± 0.06 inches)
2 ± 2 mm (0.08 ± 0.08 inches)
2 ± 1.5 mm (0.08 ± 0.06 inches)
3 ± 2 mm (0.12 ± 0.08 inches)