Canon Color Bubble Jet BJC-4550 User Manual page 53

Do not try to load paper into the sheet feeder beyond the paper
limit mark ( ) or the tab on the right side of the sheet feeder;
stacking too much paper may cause paper feeding or printing
problems.
Make sure there are no gaps between the stack of paper and the
paper guide nor the right edge of the sheet feeder.
NO GAP HERE
NO GAP HERE
4-14
Chapter 4
Paper Handling