HP LaserJet Printers - Print Media Guide

● Commercial or Ocial envelopes (also called Business or Regular), which have diagonal seams and
standard gummed aps, performed the most reliably.
● Envelopes that have double-sided seam construction, which creates vertical seams at both ends of the
envelope instead of diagonal seams, tend to be more imsy than diagonal-seam envelopes. Double-sided
seam envelopes tend to jam or wrinkle unless the edges are thin and sharply creased. However, a variety
of double-sided seam envelopes have performed acceptably during testing.
● Envelopes that have a peel-o adhesive strip or that have more than one ap that folds over for sealing,
must use adhesives compatible with the heat and pressure of the printer’s fusing process. Several varieties
of this type of envelope performed satisfactorily in HP testing. However, the extra aps and strips can
result in increased jamming or wrinkling and poor toner adhesion due to the increased thickness of the
envelope.
● Generally, feeding problems increase with envelope size. Larger envelope sizes (C5, B5) cannot have a
basis weight greater than 105 g/m
2
(28 lb).
● Rougher nishes such as laid, linen, or cockle can result in poor fusing.
● The multiple layers in envelopes construction might result in a noticeable background eect (small toner
particles scattered in the non-imaged areas). You can reduce this eect by increasing the toner density
setting on your printer.
● When running very large envelope jobs (several hundred to thousands), the fuser life might be reduced due
to accelerated wear.
● The location of the envelope ap can cause feed problems. If the ap location is the same as the pick roller
location (that is, the pick roller picks up the envelope by the ap), then the ap can move but the envelope
cannot, causing a jam. In this situation, try rotating the envelope 180 degrees so you do not feed the
envelop ap at the pick roller.
Guidelines for using envelopes
Follow these guidelines for using envelopes to ensure optimal performance.
The envelope properties and specications provided in this table generally apply to all HP LaserJet printers. See
the support documentation that came with your printer for product-specic information.
NOTE: For optimal results, print envelopes using the straightest paper path possible (for example, tray 1 to the
face-up output bin).
Table 2-2 Envelope properties and specications
Property Specications
Basis weight
60 g/m
2
to 105 g/m
2
(17 lb to 28 lb).
See the support documentation that came with your printer for
specic information.
Caliper 0.09 mm to 0.14 mm (3.6 mil to 5.5 mil) for a single-layer
thickness.
Surface roughness 100 to 200 Sheeld.
16 Chapter 2 Guidelines for using print media ENWW