HP LaserJet 4100 Service Manual download pdf (Page 35)

EN Chapter 1 Printer description 33

Envelopes

Envelope construction

Envelopes can only be printed from tray 1 or from the optional envelope feeder. Because of their

construction, some envelopes will not feed through the printer dependably. Observe the following

guidelines when purchasing and using envelopes:

Make sure the envelope’s leading edge, which enters the printer first, is straight, with a sharp,

well-creased fold that has no more than two thicknesses of paper. Envelopes that exceed

105 g/m

(28 lb) basis weight can cause jamming.

Avoid using flimsy envelopes with thick or curved leading edges; they will not feed reliably.

Envelopes should lie flat and should not be wrinkled, nicked, or otherwise damaged.

Avoid envelopes with baggy construction; they might wrinkle while going through the printer’s

fuser assembly.

Make sure that the adhesive labels used on envelopes will not scorch, melt, offset, or release

undesirable emissions when heated to a temperature between 175° to 230° C (347° to 446° F)

for 0.1 second.

Avoid using envelopes with encapsulated adhesives that rely on pressure rather than moistening

to seal.

Do not use envelopes with clasps, snaps, tie strings, transparent windows, holes, perforations, or

cutouts.

Do not use envelopes that have any adhesive surfaces exposed to the printer.

Woven or smooth finishes are recommended to ensure good toner adhesion on envelopes.

Many envelopes will feed through the HP LaserJet printer without problems. However, some

envelope constructions (as shown in the figure below) will not feed reliably. Problems can occur

when the envelopes are folded more tightly than normal, causing a thick leading edge near a corner.

Folding inconsistencies at the manufacturer can cause some envelopes to feed well and others to

jam.

Good construction Bad construction

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HP LaserJet 4100 Service Manual Page 35