Canon LBP 2900I User Manual page 88

● If the custom paper that you are using is less than 190 mm in length:
❑
Move the rear paper guide to the position shown in the diagram.
❑
Remove the small paper guide from the multi-purpose tray.
❑
Insert the small paper guide from directly above, as shown in the diagram, then
fold it towards the back.
Printing on Custom Paper Sizes (Non-Standard Sizes)
2
2-49