Canon BJC-85 User Manual page 210

I Printout is not clear or has white streaks
Low ink could cause faded characters and white lines to appear on the printout.
Try printing a Nozzle Check Pattern
Check the status of the BJ cartridge by printing the Nozzle Check Pattern.
Printing a Nozzle Check Pattern
Look at the Nozzle Check Pattern to confirm the print quality.
A normal Nozzle Check
Pattern printed with
BC-10 Black BJ Cartridge
A faded, broken Nozzle
Check Pattern
Only specific colors are faded
The specific color ink may have run out. Replace the ink tank with a new
one. Then print a Nozzle Check Pattern to see if the printing quality has
been restored.
The Nozzle Check Patterns are faded regardless of color
The print head may be clogged. Clean the print head.
Cleaning the Print Head
Problems and Solutions
Troubleshooting 209