Brother TN760 Black Toner Cartridge

Use a lightly dampened cloth to clean the outside of your laser printer. To clean the inside, use a dry, lint-free cloth to make sure that no liquid enters the inner parts of the printer.

Is your printer feeding in the whole paper stack rather than just one piece at a time? Fan the paper before putting it in the tray to help separate the sheets. Also, store your paper in a cool, dry place as humidity can contribute to this problem.

Most printers have a built-in diagnostics program which can be very useful for troubleshooting problems and test-printing without a computer. They are usually initiated by pressing a button or two while turning on the printer.