C5650n/C5650dn User’s GuideLetterhead • 21RecommendationsOnly use letterhead designed for color laser printers andphotocopiers.Don’t use very smooth, shiny or glossy paper.Don’t use heavily embossed headed paper, very rough paperor paper that has a large grain difference between the twosides.• Check www.okiprintingsolutions.com for the latestinformation on recommended papers for your printer.• Paper should be stored flat, away from moisture, directsunlight and heat sources.• The use of heavily laid or textured paper willseriously affect the life of the image drum and givepoor print quality. Print quality can be improved bychanging the media setting to ‘Ultra Heavy.’ However,this will reduce the output speed and prevent the use ofthe duplex option.• Avoid:– Damp, damaged or curled paper.– Very smooth, shiny or glossy paper.– Heavily embossed letterhead paper, very rough paper orpaper that has a large grain difference between the twosides.– Paper with perforations, cut-outs or ragged edges.– Carbon paper, recycled paper, NCR paper, photosensitivepaper, pressure sensitive paper or thermal transfer paper.CAUTIONPrint media must be able to withstand 446°F(230°C) for 0.2 second.