Full of black lines on copyprint

Change the Drum catridge.

Clean printer head with clean damp lint free cloth see if that works if not, print heads do wear out sadly.

An 1118 process unit has a 100k life @5% average coverage in my experience the usually last about 85k when the waste toner is full it's generally near the end of life of the unit the fact that you're getting black marks in the pages says to me that there is drum decay which is also a signs of the process unit life nearing its end

Your unit obviously has a separate drum and toner.
Changing the toner, doesn't change the drum.
You will need to change the drum soon.

you must have remove the white mylar sheet from the catridge when loading it...if yes! you got to find back the white mylar (plastic sheet) that slot in between the drum and charger roller placed it back ( the position must be accurate) then slot in back the catridge.The white mylar sheet is to reset the drum life counter

Open the front panel.Press and hold the clear button.When "Drum replaced"shows on the lcd panel select yes.The message will be reset.If you experiece any lines in the future you will have to replace the drum catridge.

Sounds like a paper clip (or similar) has fallen into the machine and is next to the drum.
Remove the drum unit and see if anything is in the machine or on the drum unit.
Replace the drum if it is close to the end of its life.

Hello sir; Only thing you need to do is change a drum cartridge.

may be the drum of your laser cartridge must be end of its life orwaste toner collection unit must be full.

If you see black lines on the drum, it is very likely that the drum unit is bad. Replace the drum unit and rest the drum counter. If you wait too long, you will cause toner build up in the fuser and will cost yourself several hundred dollars to get it replaced. More in labor than parts.

Use a soft cotton or very soft paper towel and wipe the excess toner from the drun. If there are lines worn in the surface of the drum, then replace it ASAP.