Canon CanoScan FB630U Product Manual page 22

• The maximum allowable size for scanning is 216 x 297 mm (8.5 x 11.69 inches), up to A4
WARNING
or letter size.
• This scanner is equipped with an ultra-sensitive scanning unit. Opening the document
cover during scanning or improperly closing it may not produce proper results. When the
document cover cannot be closed because you are scanning thick documents, such as
books, cover the document glass with a dark cloth to prevent ambient light from
affecting the scan.
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