Canon S450 User Manual page 341

I Paper skews during feeding
The paper or other media does not feed straight into the paper feed slot.
Check 1
I
S THE AUTO SHEET FEEDER OVERLOADED
The number of sheets you can load in the auto sheet feeder depends on
the media you are using. The media does not feed correctly if you exceed
the prescribed number of sheets.
Check 2
I
S THE PAPER FOLDED OR CURLED
To avoid misfeeds and paper jams, do not load paper in the auto sheet
feeder that is folded, curled, or wrinkled.
Check 3
I
S THE PAPER GUIDE SET CORRECTLY
If the paper guide on the auto sheet feeder is not set correctly, the paper
does not feed straight or may jam in the printer.
The paper guide must be snug against the side of the stack and not too
tight.
Media Types You Cannot Use With the Printer
Paper Jams or Does Not Feed
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Troubleshooting 341