Look at the fuser and or transfer belt, one of them is damaged and needs to be replaced
Printing is complete but in every print, in the background there are 11 lines of 8 black stamps interment per line.
I have tried to reset printing (default) specs from the printer menu but no use.
Further I have cleaned every possible internal part that I reach.
I have uploaded a sample scan in the following link.
Is there any solution, do I need to replace any part?