When a fuser roller becomes contaminated with toner it can cause toner stains to appear on the printed output. A normal fuser roller contains a non-stick coating which is supposed to prevent the unfused toner particles on the sheet of paper from adhering to the heated fuser roller during the fusing process. If the fuser roller becomes contaminated with toner or other contaminants then the non-stick properties are diminished. The ghosting images that occur when unfused toner is picked up by the toner stained areas of the fuser and redeposited the next revolution of the fuser roller. The circumference of the fuser roller is approximately 3 1/8". Unlike most other LaserWriters, Letter and A4 paper typically feed long edge first on the LaserWriter 8500 which means that the ghosting repeats from the right to the left side of the page. Larger paper sizes feed short edge first so the ghosting will repeat from the top to the bottom of the page.
Toner stains on the fuser roller typically cannot be cleaned off without further damaging the non-stick coating. Customers should contact their service provider for further assistance.