Canon ScanFront 400 Instructions Manual page 51

IMPORTANT
• Depending on the condition of the carrier sheet or passport,
the scanned image may be cut off and the scanner's
correction functions may not operate properly. In such cases,
specify a larger paper size (e.g., A4) in the [Page Size] setting.
(See p. 86.)
• If the size of the passport is significantly different from the size
of the carrier sheet, document jamming may occur and the
scanner's correction functions may not operate properly.
• When scanning a passport, place the passport so that the side
with more pages is fed into the scanner.
• The thickness limit for scannable documents is 0.236" (6 mm)
with the passport inserted in the carrier sheet. If 0.236" (6 mm)
is exceeded, document jamming may occur and the scanner
may be damaged.
• The carrier sheet is a consumable item. Replace it as
necessary, if there are visible scratches or smudges, for
example.
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Chapter 3 Handling