HP LASERJET 9000MFC - Manual (Page 92)

A Specifications 92
Paper specifications
Envelopes
Note To print envelopes, use Tray 1 and print them either to the face-down bin or to the face-up bin.
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:
l Weight: See “Paper specifications” on page 83 for suppor ted envelope weight.
l Construction: Prior to printing, envelopes should lay flat with less than 6 mm (0.25 inches) curl and should
not contain air. (Envelopes that trap air may cause problems.)
l Condition: Make sure envelopes are not wrinkled, nicked, or otherwise damaged.
l Sizes in Tray 1: See “Suppor ted sizes of paper for input and output” on page 84 for supported paper sizes.
Envelopes with adhesive strips or flaps
Envelopes with a peel-off adhesive strip, or with more than one flap that folds over to seal, must use adhesives
compatible with the heat and pressure of the product. The extra flaps and strips might cause wrinkling,
creasing, or jams.
Envelopes with double-side-seams
Double-side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams.
This style might be more likely to wrinkle. Make sure the seam extends all the way to the corner of the
envelope.
Envelope storage
Proper storage of envelopes helps contribute to good print quality. Envelopes should be stored flat. If air is
trapped in an envelope creating an air bubble, then the envelope may wrinkle during printing.
ENWW