Lexmark Optra S 1620 User's Guide (7.1 MB) - Page 146

Using Print Materials Using Your Printer Storing paper Properly storing the paper you buy helps ensure trouble-free printing. Use the following guidelines: • For best results, store paper in an environment where the temperature is approximately 21oC (70oF) and the relative humidity is 40%. • Store cartons of paper on a pallet or shelf, rather than directly on the floor. • If you store individual packages of paper out of the original carton, make sure they rest on a flat surface so the edges do not buckle or curl. • Do not place anything on top of the paper packages. Envelope Guidelines For optimum printing on envelopes, use only new, undamaged envelopes. When you print on envelopes, the glue must not be exposed. The combination of high humidity (over 60%) and the high printing temperatures may seal the envelopes. When printing on envelopes, be sure to select Env Feeder or MP Feeder as the paper source and set the correct envelope size. The laser printing process heats envelopes to a temperature of 200oC (392oF). Use only envelopes that are able to withstand these temperatures without sealing, excessive curling, wrinkling, or releasing hazardous emissions. If you have any doubts about the envelopes you are considering using, check with the envelope supplier. For best performance, use envelopes made from 75 g/m2 (20 lb bond) paper. You can use up to 105 g/m2 (28 lb bond) weight for the multipurpose feeder or 90 g/m2 (24 lb bond) weight for the envelope feeder as long as the cotton content is 25% or less. Envelopes with 100% cotton content must not exceed 90 g/m2 (24 lb bond) weight. 130 Using Print Materials