Setting the PRS (Pen to Rib Space) is required to ensure optimum print quality. The printer is designed to place ink on the media based on the carriage movement speed and the distance the ink must travel. If the distance is more or less than the specification, the ink drop may not land where intended, resulting in lower image quality. If the spacing is significantly less than the correct distance, the customer may experience paper jams or smearing by the carriage as it travels across the media. This smearing condition is most likely to occur on printouts that saturate the media with ink.