Canon PIXMA iP4820 On-Screen Manual - Page 56

Cleaning the Print Head Page 56 of 468 pages (3) Select the ink group to clean. 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 Examining the Nozzle Check Pattern . (4) Click Execute. The printer starts cleaning the Print Head when the POWER lamp starts flashing green. Do not perform any other operations until the printer completes the cleaning of the Print Head. This takes about 1 minute. Note Clicking Initial Check Items displays the items to be checked before cleaning the Print Head. (5) Confirm the message and click Print Check Pattern. The nozzle check pattern will be printed. Do not perform any other operations until the printer completes the printing of the nozzle check pattern. 6. Examine the nozzle check pattern. See Examining the Nozzle Check Pattern . Note If the problem is not resolved after cleaning the Print Head twice, clean the Print Head deeply. See Cleaning the Print Head Deeply . Page top