P APER HANDLING 2.32Guidelines 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 with thespecifications listed under “Paper Specifications” on page .9.• Attempting to print on damp, curled, wrinkled or torn papercan cause paper jams and the poor print quality.• Use only high quality copier grade paper for the best printquality.• Avoid paper with embossed lettering, perforations or a texturethat is too smooth or too rough. Paper jams may occur.• 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 oC and30 oC (59 oF to 86 oF). The relative humidity should bebetween 10 % and 70 %.• During storage, you should use moisture-proof wrap, such asany plastic container or bag, to prevent dust and moisturefrom contaminating your paper.• Load special paper types one sheet at a time.• Only use materials specifically recommended for use in laserprinters.• To prevent special materials, such as transparencies and labelsheets from sticking together, remove them as they printsout.• For envelopes:- Use only well-constructed envelopes with sharp, 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 from themachine.- Do not leave them in the paper tray for long periods of time.Dust and dirt may accumulate on them resulting in spottyprinting.