Canon S450 User Manual page 252

I Cleaning the Print Heads
Cleaning the print heads clears the nozzles. There are two ways to clean the print heads:
normal print head cleaning and deep print head cleaning. Always execute normal print head
cleaning first. If this does not correct the problem, then execute deep print head cleaning,
which produces more intensive cleaning.
Note
Cleaning the print heads consumes ink, so clean the print heads only when
necessary.
Normal print head cleaning
Open the Page Setup dialog box.
1
Normally, select Page Setup from the File menu.
Click the Utilities button.
2
After confirming that Print Head Cleaning is selected in the drop-down
3
menu, click the icon.
Printer Maintenance
Using the Macintosh Printer Driver 252