Canon BJC-5100 Series User Manual page 53

Cut the banner The maximum length you can use is six sheets (66 inches
at a crease or 1676 mm).
according to the
length you need.
Always leave an extra sheet at the end of the banner—just
in case the type or graphics runs over at the end of the
banner.
Insert the Align the first sheet of the paper with the left edge of the
banner paper manual feed slot and adjust the manual feed guide to the
in the manual edge of the paper; then slide the sheet into the printer
feed slot. until it stops.
Do not allow the paper to hang over the edge of the desk
or work table.
Chapter 3 Paper Handling 3-21