I have a HP Laserjet 4250n laserjet printer. All of a sudden I am getting a very dull print (about 2 inches wide) down the center of the paper. Some parts of it are not readable, while some are very dull and hard to read. It almost seems like the toner was not being laid down correctly there so I replaced the Toner Cartridge. Still happened. I tried replacing the Fuser and still have the same issue.