Lexmark 34TT027, 34TT001, X748x, X746de, X746x Tips on using transparencies, Tips on using envelopes

Printing 90

•Before loading letterhead, flex the stack to prevent sheets from sticking together.

•Page orientation is important when printing on letterhead. For information on how to load letterhead, see:

–“Loading the standard or optional 550‑sheet tray” on page 59

–“Loading the multipurpose feeder” on page 71

Tips on using transparencies

Print samples on the transparencies being considered for use before buying large quantities.

When printing on transparencies:

•Feed transparencies from any tray or drawer, except the optional 2,000‑sheet high‑capacity feeder.

•Use transparencies designed specifically for laser printers. Check with the manufacturer or vendor to ensure transparencies are able to withstand temperatures up to 170°C (338°F) without melting, discoloring, offsetting, or releasing hazardous emissions.

•To prevent print quality problems, avoid getting fingerprints on the transparencies.

•Before loading transparencies, flex the stack to prevent sheets from sticking together.

•We recommend Lexmark part number 12A8240 for letter‑size transparencies and Lexmark part number 12A8241 for A4‑size transparencies.

Tips on using envelopes

Print samples on the envelopes being considered for use before buying large quantities.

•Use envelopes designed specifically for laser/LED printers. Check with the manufacturer or vendor to ensure that the envelopes can withstand temperatures up to 220°C (446°F) without sealing, wrinkling, curling excessively, or releasing hazardous emissions.

•For best performance, use envelopes made from 90 g/m2 (24 lb bond) paper or 25% cotton. All‑cotton envelopes must not exceed 70 g/m2 (20 lb bond) weight.

•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.

Note: A combination of high humidity (over 60%) and the high printing temperature may wrinkle or seal envelopes.