Canon L250 User Manual page 114

Sending Faxes
3
Gently insert the document face-down (top of the document towards you) into the
Automatic Document Feeder (ADF) until it stops.
The document is now ready for scanning.
Wait until your document has been scanned completely before inserting a new
document.
The length of the document is slightly reduced when copying or sending documents
using manual feed.
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