When the printer was printing recently, it was found that the back of the printed paper was stained. What is the reason?
Contamination on the back of the printed sample may be caused by the following reasons:
1. Toner leaked from the developer or cleaner, and spilled on the paper path, causing the back of the paper to be contaminated.
2. The heating roller is poorly cleaned, and the toner is stained on the lower pressure roller, causing the back of the paper to be contaminated.