Xerox PE220 User Guide - Page 193

10 Specifications Category Curl in ream Cut edge conditions Fusing compatibility Grain Moisture content Smoothness Specifications Flat within 0.02 in. (5 mm) Cut with sharp blades with no visible fray. Must not scorch, melt, offset or release hazardous emissions when heated to 200 °C (392 °F) for 0.1 second. Long grain 4 % ~ 6 % by weight 100 ~ 400 Sheffield Paper Output Capacity Output Location Face-down output tray Capacity 50 sheets of 20 lb (75 g/m2 bond) paper Paper Storage Environment Paper storage environmental conditions directly affect the feed operation. Ideally, the machine and paper storage environment should be at or near room temperature, 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 paper to evaporate, while cold causes it to condense on the sheets. Heating systems and air conditioners remove most of the humidity from a room. As paper is opened and used, it loses moisture, causing streaks and smudging. Humid weather or water coolers can cause the humidity to increase in a room. As paper is opened and used it absorbs any excess moisture, causing light print and dropouts. Also, as paper loses and gains moisture it can become distorted. This can cause paper jams. Care should be taken not to purchase more paper than can be used in a short time (about 3 months). Paper stored for long periods may experience heat and moisture extremes, which can cause damage. Planning is important to prevent damage to large supplies of paper. Unopened paper in sealed reams can remain stable for several months before use. Opened packages of paper have more potential for environment damage, especially if they are not wrapped with a moisture-proof barrier. The paper storage environment should be properly maintained to ensure optimum performance. The required condition is 20 to 24 °C (68 to 75 °F), with a relative humidity of 45 % to 55 %. The following guidelines should be considered when evaluating the paper's storage environment: Xerox PE220 10-9