Canon BJC-55 User Manual page 108

Changing the Page Size
2
If the Page Size setting is not the same as the setting in the software
application, click the down-arrow and select the correct page size from the
drop-down list.
This example shows Letter selected. After making your selection, click the
OK button.
Note
Make sure the paper you load in the printer is the same size you select in
the printer driver. If the size of paper in the printer and the Page Size setting
do not match, the printer cannot execute your print job normally.
Printing With Windows 98 or Windows CE 108