Canon iP4700 SERIES On-Screen Manual page 60

1.
Make sure that the power is turned on.
2.
Make sure that one or more sheets of A4 or Letter-sized plain paper are loaded in
the Cassette.
3.
Open the Paper Output Tray gently, and extend the Output Tray Extension to open.
Important
If the Inner Cover is open, close it.
4.
Open the Canon IJ Printer Utility.
See
Opening the Canon IJ Printer Utility
5.
Clean the Print Head.
(1) Make sure that Cleaning is selected in the pop-up menu.
Click Cleaning.
(2)
Select the ink group to clean.
(3)
Note
This printer has two kinds of black ink: PGBK (pigment ink) and BK (dye ink).
Check the nozzle check pattern, then click Black if there are missing lines in PGBK, or click
Color if there are horizontal white streaks in BK.
For details on the nozzle check pattern, see
(4) Click OK.
The printer starts cleaning the Print Head when the
Do not perform any other operations until the printer completes the cleaning of the Print Head. This takes
about 1 minute 30 seconds.
Note
Clicking Initial Check Items displays the items to be checked before cleaning the Print Head.
(Macintosh).
Examining the Nozzle Check
Power
lamp starts flashing green.
Pattern.