Canon S900 User Manual page 159

Cannot Print in Background (Windows Me/Windows 98 only)
Check the amount of free space on the hard disk.
Background printing requires a certain amount of disk space. You may need to delete
unnecessary files, or disable background printing.
Ensure that background printing is enabled.
1
Open the Printer Properties dialog box.
2
On the Page Setup tab, click Printer control... and select Background
Printing.
Opening the Printer Properties Dialog Box
Troubleshooting
Problems Unique to Windows 159