Canon Laser Shot LBP5970 User Manual page 176

If you want to print custom size paper of its long edges 297.0 mm or less when
•
CASSETTE(n) SIZE (n = 2, 3, 4) or TRAY PAPER SIZE in the FEEDER MENU options in
the SETUP menu is set to MIXED SIZES, specify the settings according to the printer
driver you are using as follows.
- When using the UFR II printer driver: Load the paper in landscape orientation
- When not using the UFR II printer driver: Load the paper in portrait orientation
3
Paper Loading Orientation 3-71