HP 8550dn HP Color LaserJet 8550, 8550N, 8550DN, 8550GN, 8550MFP Printer - Use - Page 188

Print Quality Problems Unless otherwise specified, all references in this section to horizontal or vertical directions of print quality problems refer to problems found on letter- and A4-sized media. These media sizes are fed into the printer long edge first. Because media sizes other than letter or A4 are fed into the printer short edge first, the orientations of print quality problems are the opposite of those on letter or A4-sized media. Print quality problems that appear horizontally on a letter- or A4-sized page when it is held with the short edge up will run vertically on other media sizes when the page is held with the short edge up. The same is true for a vertical defect on a letter- or A4- sized page: it will appear as a horizontal defect on other sizes of media. The following figure shows a print quality problem printed on both a letter- or A4-sized page and the same defect on an 11-by-17 inch or A3-sized page (or any other size of media). Figure 17 A Letter- or A4-sized media B 11-by-17 inch or A3-sized media (or any other size of media) C Print quality problem D Direction media moves through printer EN Print Quality Problems 187