[QUOTE=haugheychops;2489272]i have a canon pixma ip 4500 printer which prints thin lines through the black sections of covers any ideas on how to solve this problem will be gratefully received :)[/QUOTE]
Welcome to the forum
Does your Canon’s software have a maintenance program - nozzle check etc?
If so, it might be worth running it if you haven’t done so already.
Similar problems with my Epson printers have been sorted by doing a maintenance run.