HP LaserJet 4345 Multifunction Printer series - Envelopes

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Envelope construction is critical. Envelope fold lines can vary considerably, not only between
manufacturers, but also within a box from the same manufacturer. Successful printing on
envelopes depends upon the quality of the envelopes. When selecting envelopes, consider
the following components:

Weight: The weight of the envelope paper should not exceed 105 g/m


(28 lb) or

jamming might occur.

Construction: Prior to printing, envelopes should lie flat with less than 6 mm (0.25 inch)
curl, and should not contain air.

Condition: Envelopes should not be wrinkled, nicked, or otherwise damaged.

Temperature: You should use envelopes that are compatible with the heat and
pressure of the printer.

Size: You should use only envelopes within the following size ranges.

Minimum: 76 x 127 mm (3 x 5 inches)

Maximum: 216 x 356 mm (8.5 x 14 inches)


Use only tray 1 or the optional envelope feeder to print envelopes.You might experience
some jams when using any media with a length less than 178 mm (7 inches). This might be
caused by paper that has been affected by environmental conditions. For optimum
performance, make sure you are storing and handling the paper correctly (see

Printing and

paper storage environment

). Choose envelopes in the printer driver (see

Using the printer




Appendix D Media specifications


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Envelopes with double side seams

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.


Acceptable envelope construction


Unacceptable envelope construction

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 compatible with the heat and pressure in the printer. The extra flaps and
strips might cause wrinkling, creasing, or even jams and might even damage the fuser.

Envelope margins

The following gives typical address margins for a commercial #10 or DL envelope.

Type of address

Top margin

Left margin

Return address

15 mm (0.6 inch)

15 mm (0.6 inch)

Delivery address

51 mm (2.0 inches)

89 mm (3.5 inches)


For the best print quality, position margins no closer than 15 mm (0.6 inch) from the edges
of the envelope. Avoid printing over the area where the envelope's seams meet.

Envelope storage

Proper storage of envelopes helps contribute to print quality. Envelopes should be stored
flat. If air is trapped in an envelope, creating an air bubble, then the envelope might wrinkle
during printing.

For more information, see

Printing on envelopes



Print media specifications