I'am currently having problems printing from my cannon mutipass printer.I can print small font fine in black but whene i make the font large and try to print there is a white line in the middle of the font as if the ink is not even touching the paper. I have re-alighned the printhead a few times with no difference and when i do a nozzle pattern test it seems just fine.I have also taken out the ink cartridges and reinserted them, I have also made sure that the ink is full and still end up with the same problem- any suggestions-