C9300/C9500 Setting up • 37MEDIA RECOMMENDATIONSWe recommend the following guidelines when selecting paper andenvelopes for use in this printer:Paper• For recommended papers see your “C9300/C9500 HandyReference Guide” or check http://my.okidata.com.• Paper should be stored flat and away from moisture, directsunlight and heat sources.• Don’t use damp, damaged or curled paper.• The use of heavily laid or textured paper will seriously affect thelife of the image drum and give poor print quality. Print quality canbe improved by changing the media setting to ‘Ultra Heavy.’However, this will reduce the output speed and prevent the use ofthe duplex option.• Don’t use very smooth, shiny or glossy paper.• Don’t use heavily embossed headed paper, very rough paper orpaper that has a large grain difference between the two sides.• Don’t use paper with perforations, cut-outs or ragged edges.• Don’t use carbon paper, NCR paper, photosensitive paper,pressure sensitive paper or thermal transfer paper.CAUTIONPrint media must be able to withstand 446°F (230°C) for 0.2second.