Dell 2135cn - Multifunction Color Laser Printer Troubleshooting Manual page 251

Check with the manufacturer or vendor to determine whether the pre-printed letterhead that you have selected is acceptable for laser printers.
Page orientation is important when printing on letterhead. Use the following table for help when loading letterheads in the print media sources.
Print media source Print side
Face up
Tray 1
Face down
Single sheet feeder
Selecting Pre-Punched Paper
Pre-punched paper brands can differ in the number and placement of holes and in manufacturing techniques. However, it may or may not be possible to print
on the paper depending on the placement of holes on the paper.
To select and use pre-punched paper:
Test paper from several manufacturers before ordering and using large quantities of pre-punched paper.
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Paper should be punched at the paper manufacturer and not drilled into paper already packaged in a ream. Drilled paper can cause jams when multiple
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sheets feed through the printer. This may result in a paper jam.
Pre-punched paper can include more paper dust than standard paper. Your printer may require more frequent cleaning and feed reliability may not be
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as good as standard paper.
Weight guidelines for pre-punched paper are the same as non-punched paper.
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Envelopes
Depending on the choice of envelopes, it is possible to expect variable levels of wrinkling. Before buying large quantities of any print media, it is recommended
to try a sample first. See "Loading Print Media in the Tray 1"
When printing on envelopes:
Use only high-quality envelopes that are designed for use in laser printers.
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Set the print media source to the single sheet feeder or the tray 1. Set the paper type to Envelope, and select the correct size of envelope from the
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printer driver.
For best performance, use envelopes made from 75 g/m
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as long as the cotton content is 25% or less. Envelopes with 100% cotton content must not exceed 90 g/m
Use only freshly unpackaged, undamaged envelopes.
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Use envelopes that can withstand temperatures of 205°C (401°F) without sealing, excessive curling, wrinkling, or releasing hazardous emissions. If
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you have any doubts about the envelopes you are considering, check with the envelope supplier.
Adjust the guide to fit the width of the envelopes.
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To load an envelope into the single sheet feeder, insert the envelope with the flaps closed and the short-edge of the envelope facing into the printer.
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The print side must be facing down.
See "Loading Print Media in the Tray 1"
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Use one envelope size during a print job.
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Ensure that the humidity is low because high humidity (more than 60%) and the high printing temperatures may seal the envelopes.
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For best performance, do not use envelopes that:
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Have excessive curl or twist
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Page orientation
Letterhead enters the printer last
Letterhead enters the printer first
or "Loading the Single Sheet Feeder"
2
(20 lb bond) paper. You can use up to 105 g/m
or "Loading the Single Sheet Feeder"
for instructions on loading an envelope.
2
(28 lb bond) weight for the envelope feeder
2
(24 lb bond) weight.
for instructions on loading an envelope.