When horizontal banding appears or the top or bottom of the paper is smeared, load paper in the correct direction and slide the edge guides to the edges of the paper.
When vertical banding appears or the paper is smeared, clean the paper path.
Place the paper on a flat surface to check if it is curled. If it is, flatten it.
When performing manual 2-sided printing, make sure that the ink is completely dry before reloading the paper.