Epson Stylus Pro 9600 Print Engine with Photographic Dye™ Ink

The most common cause of vertical banding is over-saturation of the media, usually created by paper "rippling". To correct this effect, decrease the saturation and lower the paper suction. If vertical banding is still apparent print the image with high speed off (uni-directional). If this corrects the issue, align the print head, as described on page 5-6 of the Users Guide.