3PAPER HANDLING 3.3Guidelines for Paper and Special MaterialsWhen selecting or loading paper, envelopes, or other specialmaterial, keep these guidelines in mind:• Always use paper and other materials that conform withthe specifications listed under “Paper Specifications” onpage D.6.• Attempting to print on damp, curled, wrinkled, or tornpaper can cause paper jams and poor print quality.• Use only high quality copier grade paper for the best printquality.• Avoid paper with embossed lettering, perforations, or atexture that is too smooth or too rough. Paper jams mayoccur.• Store paper in its ream wrapper until you are ready to use.Place cartons on pallets or shelves, not on the floor. Do notplace heavy objects on top of the paper, whether it ispackaged or unpackaged. Keep it away from moisture, orother conditions that can cause it to wrinkle or curl.• Store unused materials at temperatures between 15 oCand 30 oC (59 o F to 86 oF). The relative humidity should bebetween 10 % and 70 %.• During storage, you should use a moisture-proof wrap,such as a plastic container or bag, to prevent dust andmoisture from contaminating your paper.• Load special paper types one sheet at a time through theMultipurpose tray to avoid paper jams.• Only use materials specifically recommended for use inlaser printers.• To prevent special materials, such as transparencies andlabel sheets from sticking together, remove them as theyprint out.• For envelopes:- Use only well-constructed envelopes with sharp and wellcreased folds.- Do not use envelopes with clasps and snaps.- Do not use envelopes with windows, coated lining, self-adhesive seals, or other synthetic materials.- Do not use damaged or poorly made envelopes.• For transparencies:- Place them on a flat surface after removing them fromthe machine.