- From the printer control panel, set the paper size, type, texture, and weight in the Paper menu to match the envelopes loaded in the tray.
- Print samples on the envelopes being considered for use before buying large quantities.
- Use envelopes designed specifically for laser printers.
- For best performance, use envelopes made from 90‑g/m2 (24‑lb) paper or 25% cotton.
- Use only new envelopes from undamaged packages.
- To optimize performance and minimize jams, do not use envelopes that:
- Have excessive curl or twist.
- Are stuck together or damaged in any way.
- Have windows, holes, perforations, cutouts, or embossing.
- Have metal clasps, string ties, or folding bars.
- Have an interlocking design.
- Have postage stamps attached.
- Have any exposed adhesive when the flap is in the sealed or closed position.
- Have bent corners.
- Have rough, cockle, or laid finishes.
- Adjust the width guides to fit the width of the envelopes.
- Before loading the envelopes on the tray, flex the stack of envelopes back and forth to loosen them, and then fan them. Straighten the edges on a level surface.
Note: A combination of high humidity (over 60%) and high printing temperature may wrinkle or seal envelopes.