HP Color LaserJet 2550 Printer series - Manual (Page 30)

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. Be sure the seam extends all the
way to the corner of the envelope as illustrated below.
1
2
1 acceptable
2 unacceptable
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 that are compatible with the heat and pressure in the printer. The extra
flaps and strips might cause wrinkling, creasing, or even jams and might damage the fuser.
Labels
Select the type of label that you are using from the Print dialog box or the printer driver.
CAUTION To avoid damaging the printer, use only labels that are recommended for laser printers. To
prevent serious jams, always use tray 1 to print on labels and always use the straight-
through paper path. Never print on the same sheet of labels more than once or print on a
partial sheet of labels.
When selecting labels, consider the quality of each component:
● Adhesives: The adhesive material should be stable at 210° C (410° F), which is the
printer fusing temperature.
● Arrangement: Only use labels with no exposed backing between them. Labels can peel
off sheets with spaces between the labels, causing serious jams.
● Curl: Before printing, labels must lie flat with no more than 13 mm (0.5 inch) of curl in
any direction.
● Condition: Do not use labels that have wrinkles, bubbles, or other indications of
separation.
For more information, see Printing on labels .
Transparencies
Use only tray 1 to print on transparencies. Select Transparencies from the Print dialog box
or the printer driver.
The printer supports printing on color transparencies. Use only transparencies that are
recommended for use in laser printers.
20 Chapter 1 Printer basics ENWW