Please attach a scanned image or a photo of a printout showing the black lines so I can diagnose the likely cause for you?
Hi, I have not received anything from you yet - could you please attach a scanned image or a photo on this question page using the paperclip icon?
Yes, I have received the copies.
I will not call, since there is an additional charge for that service.
Do the black lines occur when printing AND copying blank pages?
If both printed pages and scanned pages are affected, then please try replacing the toner cartridge.
Ensure you use a genuine Canon cartridge, not a third party or refilled cartridge.
Let me know if there is any improvement?
Ok, so the problem only occurs with faxes?