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After cleaning the printer head and printing a nozzle pattern and replacing both black ink cartridges. The printer still does not print "black".  The nozzle check pattern does print the colored lines but no check pattern at time.  Please advise as to...

I replaced the large print cartridge and when I do a new "Nozzle" check pattern, it still will not print the top grid lines.does this mean the head cleaner part is out??  it prints the colors on the check pattern, but not the black grid lines.thanks ...

Just replaced my large ink cartridge (cannon brand); it will not print the above top row of nozzle "check: page; only the colors. no boxed pattern at top; usually means the large ink is not "firing" after replaceing with new; still will not print.is ...