Canon BJC 3000 Reference Manual page 187

Check 1
Is the ink of BJ Cartridge in good condition?
If there are wide differences between the screen colours and printed
colours, one of the ink tanks may have run out of ink or some of the print
head nozzles may be clogged.
Print a nozzle check pattern and check the results.
Check 2
Is the ink tank installed in the correct slot of the cartridge holder?
Make sure that you install the ink tank in the correct slot of the cartridge
holder.
Printing a Nozzle Check Pattern
Replacing the Ink Tanks
Printed and on-screen colour do not match
Troubleshooting - Printout is Unsatisfactory 187