HP LaserJet 4345 HP LaserJet 4345mfp - User Guide - Page 275

D Media specifications Print media specifications For complete paper specifications for all HP LaserJet printers and MFPs, see the HP LaserJet Printer Family Print Media Guide (available at http://www.hp.com/support/ ljpaperguide). Category Acid content Caliper Curl in ream Cut edge conditions Fusing compatibility Grain Moisture content Smoothness Specifications 5.5 pH to 8.0 pH 0.094 to 0.18 mm (3.0 to 7.0 mils) Flat within 5 mm (0.02 inch) Cut with sharp blades that create 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 3% to 9% by weight 100 to 250 Sheffield Printing and paper storage environment Ideally, the printing and paper storage environment should be at or near room temperature, and not too dry or too humid. Remember 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 distort. This can cause jams. As a result, paper storage and handling are as important as the paper-making process itself. Paper storage environmental conditions directly affect the feed operation. ENWW Print media specifications 261