Canon S400 Reference Manual page 150

Single file page prints over two or more pages
Check
Does the Page Size setting in the application program and printer driver
match?
Set the same Page Size setting for the application program and the printer
driver.
Open the Printer Properties dialogue box, click the Page Layout tab, and
select the Page Size that matches the Page Size setting in the application
program.
Troubleshooting - Printout is Unsatisfactory
Windows
150