Grey streak on right of pages approx 6cm wide
Just replaced the toner cartridge and now getting 6cm wide grey streak on the right of pages. When I remove the cartridge I can see that the right hand side of the roller in the printer is covered in toner. Is this a faulty replacement cartridge and what's the best material to clean the roller?
bad drum wiper blade. They are easy to change, just 5 screws. You might still find them by doing a search for EX wiper blade.