Card stock and heavy media
You can print many types of card stock from the 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. The HP LaserJet 3390/3392 all-in-one is designed to accommodate card
stock by opening the rear output door to use the straight-through output path.
For optimum performance, do not use paper heavier than 157 g/m
(42 lb). Paper that is too heavy
might cause misfeeds, stacking problems, jams, poor toner fusing, poor print quality, or excessive
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.