[SOLVED] ~Canon MP620, leaving gaps/streaks...~
My Printer is only a few months old, and I have only used it to print 4 things. The smaller (size 16 and 20 font) text was fine, then I printed a 10x7cm black picture of a pirate flag and it had lines all through it where ink was missing, so printed a small skull and cross bones, and it didn't. Then a larger (size 72 font) print and there were 3mm gaps at regular intervals through the page. I have cleaned the heads, not sure what else to do.