10 SpecificationsXerox PE220 10-9Paper Output CapacityPaper Storage EnvironmentPaper storage environmental conditions directly affect the feed operation.Ideally, the machine and paper storage environment should be at or near roomtemperature, and not too dry or humid. Remember that paper is hygroscopic;it absorbs and loses moisture rapidly.Heat works with humidity to damage paper. Heat causes the moisture in paperto evaporate, while cold causes it to condense on the sheets. Heating systemsand air conditioners remove most of the humidity from a room. As paper isopened and used, it loses moisture, causing streaks and smudging. Humidweather or water coolers can cause the humidity to increase in a room. Aspaper is opened and used it absorbs any excess moisture, causing light printand dropouts. Also, as paper loses and gains moisture it can becomedistorted. This can cause paper jams.Care should be taken not to purchase more paper than can be used in a shorttime (about 3 months). Paper stored for long periods may experience heat andmoisture extremes, which can cause damage. Planning is important toprevent damage to large supplies of paper.Unopened paper in sealed reams can remain stable for several months beforeuse. Opened packages of paper have more potential for environmentdamage, especially if they are not wrapped with a moisture-proof barrier.The paper storage environment should be properly maintained to ensureoptimum performance. The required condition is 20 to 24 °C (68 to 75 °F), witha relative humidity of 45 % to 55 %. The following guidelines should beconsidered when evaluating the paper’s storage environment:Curl in ream Flat within 0.02 in. (5 mm)Cut edge conditions Cut with sharp blades with no visible fray.Fusing compatibility Must not scorch, melt, offset or releasehazardous emissions when heated to 200 °C(392 °F) for 0.1 second.Grain Long grainMoisture content 4 % ~ 6 % by weightSmoothness 100 ~ 400 SheffieldCategory SpecificationsOutput Location CapacityFace-down output tray 50 sheets of 20 lb (75 g/m 2 bond) paper