HP LaserJet 5000 Service Manual - Page 28

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: q Weight: The weight of the envelope paper should not exceed 28 lb (105 g/m2), or jamming may result. q 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.) q Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged. q Sizes in Tray 1: From 3 by 5 in (76 by 127 mm) to 12.28 by 18.5 in (312 by 470 mm). Always print envelopes from Tray 1. To prevent envelopes from wrinkling or jamming, open the rear output bin. Envelopes with Double-Side-Seams Double-side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams. This style may be more likely to wrinkle. Be sure the seam extends all the way to the corner of the envelope as illustrated below. Acceptable Figure 1-5 Unacceptable Envelopes with Double-Side-Seams EN Paper Specifications 1-19