B4400/4500/4550/4600 User’s Guide66Paper recommendationsFor guidance on the media you can use with your printer,which input tray and which ejection method to use, see thesection entitled “Paper and tray information” in the“Specifications” chapter.Paper and envelope typesWe recommends the following guidelines when selecting paperand envelopes for use in your printer:• Paper and envelopes should be stored flat and away frommoisture, direct sunlight and heat sources.• Use a smooth finished paper such as copier or laser typepaper with a Sheffield (smoothness) rating of 250 orless. If in doubt, please ask your paper supplier.• Use envelopes designed for use in laser type printers.• The use of heavily laid or textured paper will seriouslyaffect the life of the image drum.• Do not use very smooth, shiny/glossy paper.• Do not use heavily embossed letterhead paper.• Avoid printing on both sides and putting paper throughthe printer twice.• Avoid using paper with perforations, cut-outs and raggededges.• Do not use envelopes with windows or metal clasps.• Do not use envelopes with self sealing flaps.• Avoid using damaged or curled envelopes.Transparencies and adhesive labelsThe manufacturer of this printer recommends the followingguidelines when selecting transparencies and adhesive labelsfor use in your printer:• Always use manual feed.• Always use rear output.• Media must be designed for use in laser printers orphotocopiers and must be able to withstand 200°C(390°F) for 0.1 sec.