Even if you place originals in the ADF or on the exposure glass correctly, margin of a few millimeters on all four sides of the original might not be copied.
2 ± 1.5 mm (0.08 ± 0.06 inch)
2 ± 2 mm (0.08 ± 0.08 inch)
2 ± 1.5 mm (0.08 ± 0.06 inch)
4 ± 2 mm (0.16 ± 0.08 inch)