HP 1200 HP LaserJet 1200 Series - User Guide - Page 245

Note Envelope storage Proper storage of envelopes contributes to good print quality. You should store envelopes flat. If air is trapped in an envelope, creating an air bubble, the envelope might wrinkle during printing. Card stock and heavy media You can print many types of card stock from the paper input tray, including index cards and postcards. Some card stock performs better than others because its construction is better suited for feeding through a laser printer. For optimum printer performance, do not use paper heavier than 42 lb (157 g/m2). Paper that is too heavy might cause misfeeds, stacking problems, paper jams, poor toner fusing, poor print quality, or excessive mechanical wear. You might be able to print on heavier paper if you do not fill the input tray to capacity and if you use paper with a smoothness rating of 100-180 Sheffield. Card stock construction q Smoothness: 36-42 lb (135-157 g/m2) card stock should have a smoothness rating of 100-180 Sheffield. 16-36 lb (60-135 g/m2) card stock should have a smoothness rating of 100-250 Sheffield. q Construction: Card stock should lie flat with less than 5 mm (0.2 in.) of curl. q Condition: Make sure that the card stock is not wrinkled, nicked, or otherwise damaged. q Sizes: Only use card stock within the following size ranges: • Minimum: 76 x 127 mm (3 x 5 in.) • Maximum: 216 x 356 mm (8.5 x 14.0 in.) Card stock guidelines q If the card stock curls or jams, print using the straight-through output path. q Set margins at least 2 mm (0.08 in.) away from the edges. EN Guidelines for using media 243