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Chapter – Troubleshooting 41
Envelope problems
High rates of jams, gray areas printing on envelopes, or wrinkling can
indicate problems with envelopes.
Frequent envelope jams
Overfilling the envelope tray and misadjusting its guides are the most
common causes of jams. However, if the envelope tray is properly
loaded, the envelopes might be causing the problems.
To recover from an envelope jam, follow the directions listed in your
HP LaserJet printer user guide.
CAUTION Do not reuse jammed envelopes. Doing so can damage the printer.
Cause Action(s)
Envelopes are poorly
manufactured.
l Make sure the leading edge is
straight, with a sharp, well-creased
fold. The envelope must not have
more than two thicknesses of paper
along any leading edge. The folded
layers of paper should form a point at
the leading-edge corners (see the
figure in "Envelope construction").
l Purchase envelopes that are
manufactured correctly, or run the
side of a pen or pencil over the
envelope edges to flatten them.
Envelopes are not creased
sufficiently to have sharp edges.
l Crease the leading edge of the
envelope with the side of a pen or
pencil, or change to a different type or
brand.
Envelopes are wrinkled, bent, or
curled.
l Use envelopes with edges that are
thin and sharply creased.
Envelopes are too stiff or heavy.
Stiff or heavy envelopes cannot
negotiate the paper path or be
picked up from the envelope tray.
l Use a lighter-weight envelope. Do not
exceed 105 g/m
2
(28 lb).
Envelopes are too smooth (not
enough friction for transport) or
too rough
l Change to a different type of
envelope.
Envelope is inserted too far into
the manual feed slot.
l Insert the envelope only until you feel
a slight resistance.