De acordo com eHow, sim, o tambor está indo mal
As the laser causes the toner to deposit images or words onto paper, over time it can etch lines onto the surface of the drum itself because of the drum's repeated exposure to the laser. Toner begins to stick to those etched lines. As the paper passes over the drum during the printing process, those lines transfer onto the paper. These lines will appear in the same places on each document you print. When you notice these lines, you need to check into replacing the drum.
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