Canon BJC-4300 Series User Manual page 33

Pull the paper
support up until
it stops.
Pull out the paper
output tray and
its extension.
3
Fan the paper.
4
For letter-size and A4-size paper, extend the paper output tray.
For best results, fan the paper before loading it.
Always fan a stack of paper along the edge that will feed into the printer first.
4300 Chapter 3 Page 8