Jul 072-10 45 PPM Laser Printer User GuideAbout PaperUnusable PaperUsing the following types of paper might cause paper jams, malfunctions or damage to the printer.Do not use them. Full-color transparencies Paper that is too thick or thin Paper that has been printed on before (including color printing) Wrinkled, folded, or torn paper Wet paper Curled paper Paper with static electricity Adhesive paper Postcards with pictures Paper with special coating on its surface Treated colored paper Paper using ink that will run at a temperature of 150 C Heat sensitive paper Carbon paper Paper with staples, paper clips, ribbons, or tape Paper with rough surfaces such as pulp paper or fibrous paper If acid paper is used, the characters might appear fuzzy. Replace it with alkaline paper. Envelopes that are not flat or have metal fasteners Labels which do not fully cover the adhesive backingIf background image suppression agent sticks to the feed roll when feeding postcards with pictures,the postcards may not feed. When this happens, clean the feed roll by referring to “Cleaning thePrinter”.