Envelopes Envelope Construction Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. Successful printing on envelopes depends upon the quality of the envelopes. When selecting envelopes, consider the following components: z Weight: The weight of the envelope paper should not exceed 28 lb (105 g/m 2 ), or jamming may result. z Construction: Prior to printing, envelopes should lie flat with less than 0.25 in (6 mm) curl, and should not contain air. (Envelopes that trap air may cause problems.) z Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged.
z Sizes in Tray 1: From 3 by 5 inches (76 by 127 mm) to 8.5 by 14 inches (216 by 356 mm). z Sizes in the optional envelope feeder: From 3.5 by 6.3 in (90 by 160 mm) to 7 by 10 in (178 by 254 mm). If you do not have an optional envelope feeder, always print envelopes from Tray 1. If envelopes wrinkle, try opening the rear output bin. 1-16 Printer Description EN