Canon Color Bubble Jet BJC-3000 Series User Manual page 290

I Deep print head cleaning
Always execute normal print head cleaning first. Only when the normal
Note
print head cleaning does not correct the problem, perform deep print head
cleaning.
Windows
1
Open the Printer Properties dialog box.
2
Click the Maintenance tab.
3
Click the Print Head Deep Cleaning icon in the Print Head Cleaning box.
Cleaning the Print Head
Routine Maintenance 290