HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 72)

EN Selecting Media 71
Labels
Labels consist of three parts: the top or face sheet that the printer
prints on, the adhesive, and the carrier sheet (also referred to as the
backing or liner). When printing on labels with this printer, observe the
following:
z Top sheets, which are the printing surface, are usually composed
of xerographic paper. Label top sheets must provide good toner
adhesion.
z Carrier sheets must be compatible with the printer's fusing
temperature (approximately 374° F, or 190° C) and the pressure
of the fusing process. The carrier sheet also must be coated for
easy release of the top sheet.
CAUTION Do not remove labels from the carrier sheet and then print on the
remaining labels; printer damage can result.
z Adhesives must be able to withstand the printer's fusing
temperature (approximately 374° F, or 190° C). The adhesives
must not produce emissions that exceed exposure levels or
threshold limits established by the U.S. Occupational Safety and
Health Administration and other safety agencies. Adhesives must
not come in direct contact with any part of the printer. No
adhesive should be pressed out of the edges or between die-cuts
(the cuts between individual labels).
z Labels should be arranged so that the carrier sheet is not
exposed. Using label stock with spaces between the horizontal
rows of labels might result in labels peeling off during printing,
causing jams and possible printer damage. Labels might be
specifically manufactured to leave a margin around the outside
edges that correspond to the outer margins of the printable area.
Do not remove the excess top sheet material from the carrier
sheet.
Note Labels could meet all of the guidelines in this chapter and still not
print satisfactorily because of the printing environment or other
variables over which HP has no control.