Envelope specifications 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: Weight: The weight of the envelope paper should not exceed 105 g/m 2 (28 lb) or jamming can occur. Construction: Prior to printing, envelopes should lie flat with less than 6 mm (0.25 in) curl, and should not contain air. Condition: Envelopes should not be wrinkled, nicked, or otherwise damaged. Temperature:
Envelopes should be compatible with the heat and pressure of the printer. Size: Envelopes must be within the following size ranges: minimum of 76 by 127 mm (3 by 5 in) and maximum of 216 by 356 mm (8.5 by 14 in). Note Use only tray 1 to print envelopes. Send envelopes straight through the printer, entering at tray 1 and exiting from the rear output bin CAUTION Jams might occur when using any media with a length less than 178 mm (7 in). This can be caused by paper that has been affected by environmental conditions. See "Evaluate environmental conditions" in chapter 7.
Envelopes might meet the general specifications listed in table 14 and still not print satisfactorily because of the printing environment or other variables over which HP has no control. Table 14. Envelope specifications C7058-90936 Media specifications 33 Description Specification Paper Paper used for envelope construction must meet the paper specifications listed in this manual and the HP LaserJet Printer Family Print Media Guide (except for those listed below). Basis weight g/m2 60 to 100 g/m2 (16 to 27 lb), single thickness. Jamming might result if 100 (27 lb) weight is exceeded.
See “Moisture-content field test” on page 39 Finish Avoid using envelopes with adhesive exposed to the printer. Envelopes must be folded accurately so that there are no more than two thicknesses of paper anywhere along the leading edge. All folds must be well scored and sharply creased, and construction must be tight (not baggy). Avoid using envelopes that are stuck together with excess seam gum. See “Furnish (fiber composition) field test” on page 40 Fusing compatibility All inks, adhesives, and other materials used in the envelope must be compatible with the heat and pressure of the fusing process.
Materials must not discolor, melt, offset materials, or release hazardous emissions when heated to 200 degrees C (392 degrees F) for 0.1 second. See “Fusing-compatibility field test” on page 40 Curl (Pre-printed) Envelopes must lie flat, with no more than 5 mm (0.2 in) curl across the entire surface. See “Curl field test” on page 40 Caliper Caliper of 0.084 to 0.14 mm (.0034 in to .0056 in), single thickness. See “Caliper field test” on page 39