Choosing print material
Choosing print material
1
Printing
Paper handling
The print quality and feed reliability of your printer and options can vary with the type and size
of print material you use. This section provides guidelines for each type of print material. For
information on card stock and labels, refer to the Card Stock & Label Guide located on
Lexmark’s Web site at www.lexmark.com.
Always print samples on the print material you are considering before buying large quantities.
Maintenance
Troubleshooting
Administration
Click a topic for more information:
• Paper characteristics
• Choosing paper
• Recommended paper
• Choosing envelopes
• Unacceptable paper
• Choosing labels
• Choosing preprinted forms
and letterhead
• Choosing card stock
• Choosing transparencies
Index
• Choosing prepunched paper
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Choosing print material
2
Printing
Paper characteristics
Paper handling
Maintenance
The following paper characteristics affect print quality and reliability. We recommend that you
keep these guidelines in mind when evaluating new paper stock.
For detailed information, refer to the Card Stock & Label Guide located on the Lexmark Web
site at www.lexmark.com.
Weight
Troubleshooting
Administration
The printer can automatically feed paper weights from 60 to 176 g/m2 (16 to 47 lb bond) grain
long. Paper lighter than 60 g/m2 (16 lb) might not be stiff enough to feed properly, causing
paper jams. For best performance, use 75 g/m2 (20 lb bond) grain long paper. To use paper
narrower than 182 x 257 mm (7.2 x 10.1 in.), we recommend that the weight be greater than
or equal to 90 g/m2 (24 lb bond).
Curl
Index
Curl is the tendency of paper to curve at its edges. Excessive curl can cause paper feeding
problems. Curl usually occurs after the paper passes through the printer, where it is exposed
to high temperatures. Storing paper unwrapped in humid conditions, even in the paper tray,
can contribute to paper curling.
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Choosing print material
3
Printing
Smoothness
Paper handling
Maintenance
The degree of smoothness of paper directly affects print quality. If the paper is too rough, the
toner does not fuse to the paper properly, resulting in poor print quality. If the paper is too
smooth, it can cause paper feeding problems. Smoothness needs to be between 100 and
300 Sheffield points; however, smoothness between 100 and 175 Sheffield points produces
the best print quality.
Moisture content
Troubleshooting
Administration
The amount of moisture in the paper affects both print quality and the ability of the printer to
feed the paper properly. Leave the paper in its original wrapper until you are ready to use it.
This limits the exposure of the paper to moisture changes that can degrade its performance.
Grain direction
Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long,
running the length of the paper, or grain short, running the width of the paper.
Index
For 60 to 176 g/m2 (16 to 47 lb bond) paper, grain long fibers are recommended. For papers
heavier than 176 g/m2 (47 lb bond), grain short is preferred. For the multipurpose feeder, 60
to 135 g/m2 (16 to 36 lb bond) paper, grain long fibers are recommended. For the
multipurpose feeder, papers heavier than 135 g/m2 (36 lb bond), grain short is preferred.
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Choosing print material
Printing
Fiber content
Paper handling
Maintenance
Troubleshooting
Administration
Index
Most high-quality xerographic paper is made from 100% chemically pulped wood. This
content provides the paper with a high degree of stability resulting in fewer paper feeding
problems and better print quality. Paper containing fibers such as cotton possess
characteristics that can result in degraded paper handling.
Recommended paper
To ensure the best print quality and feed reliability, use 75 g/m2 (20 lb) xerographic paper.
Business papers designed for general business use may also provide acceptable print
quality.
Always print several samples before buying large quantities of any type of paper. When
choosing any papers, consider the weight, fiber content, and color of the paper.
The laser printing process heats paper to high temperatures of 225°C (437°F) for Magnetic
Ink Character Recognition (MICR) applications, and 205°C (401°F) for non-MICR
applications. Use only papers that are able to withstand these temperatures without
discoloring, bleeding, or releasing hazardous emissions. Check with the manufacturer or
vendor to determine whether the paper you’ve chosen is acceptable for laser printers.
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4
Choosing print material
5
Printing
Unacceptable paper
Paper handling
The following papers are not recommended for use with the printer:
• Chemically treated papers used to make copies without carbon paper, also known as
carbonless papers, carbonless copy paper (CCP), or no carbon required (NCR) paper
Maintenance
• Coated papers (erasable bond)
• Multiple-part forms or documents
• Preprinted papers that require a registration (the precise print location on the page)
Troubleshooting
greater than ±0.09 in., such as optical character recognition (OCR) forms
In some cases, you can adjust registration with your software application to
successfully print on these forms.
Administration
• Preprinted papers with chemicals that may contaminate the printer
• Preprinted papers that can be affected by the temperature in the printer fuser
Index
• Rough-edged or curled papers
• Synthetic papers
• Thermal papers
• Less than 60 g/m2 (16 lb) recycled paper
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Choosing print material
6
Printing
• Recycled papers containing more than 25% post-consumer waste that do not meet
DIN 19 309
Paper handling
Maintenance
Choosing preprinted forms and letterhead
Use the following guidelines when selecting preprinted forms and letterhead paper for the
printer:
• Use grain long papers for best results.
Troubleshooting
• Use only forms and letterhead printed using an offset lithographic or engraved printing
process.
• Choose papers that absorb ink, but do not bleed.
Administration
Index
• Avoid papers with rough or heavily textured surfaces.
Use papers printed with heat-resistant inks designed for use in xerographic copiers. The ink
must withstand temperatures of 225°C (437°F) without melting or releasing hazardous
emissions. Use inks that are not affected by the resin in the toner. Inks that are oxidation-set
or oil-based should meet these requirements. Latex inks might not meet these requirements.
If you are in doubt, contact your paper supplier.
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Choosing print material
7
Printing
Choosing prepunched paper
Paper handling
Prepunched paper brands can differ in the number and placement of holes and in
manufacturing techniques.
Use the following guidelines when selecting and using prepunched paper:
Maintenance
• Test paper from several manufacturers before ordering and using large quantities of
pre-punched paper.
• Paper should be punched at the paper manufacturer and not drilled into paper already
Troubleshooting
packaged in a ream. Drilled paper can cause paper jams when multiple sheets feed
through the printer.
• Prepunched paper can include more paper dust than standard paper. Your printer
Administration
may require more frequent cleaning and your feed reliability may not be as good as
that of standard paper.
• Weight guidelines for prepunched paper are the same as for nonpunched paper.
Index
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Choosing print material
8
Printing
Choosing paper
Paper handling
Proper paper loading helps prevent paper jams and ensure trouble-free printing.
To help avoid paper jams or poor print quality:
• Always use new, undamaged paper.
Maintenance
• Before loading paper, know the recommended print side of the paper you’re using.
This information is usually indicated on the paper package.
• Do not use paper that you have cut or trimmed yourself.
Troubleshooting
• Do not mix paper sizes, weights, or types in the same paper source; mixing results in
paper jams.
Administration
• Do not use coated papers.
• Do not forget to change the Paper Size setting when you use a source that does not
support auto size sensing.
Index
• Do not remove paper trays while a job is printing or Busy is displayed on the operator
panel.
• Make sure the Paper Type, Paper Texture, and Paper Weight settings are correct.
(See Paper Menu for detailed information about these settings.)
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Lexmark T620 and T622
Choosing print material
9
Printing
• Make sure the paper is properly loaded in the paper source.
• Flex paper back and forth. Do not fold or crease the paper. Straighten the edges on a
Paper handling
level surface.
Maintenance
Troubleshooting
Choosing envelopes
Administration
When printing on envelopes:
• To achieve the best possible print quality, use only high-quality envelopes that are
designed for use in laser printers.
Index
• Use only new, undamaged envelopes.
• Load only one size of envelope at a time in the envelope feeder.
• Make sure the glue is not exposed.
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Choosing print material
10
Printing
• A combination of high humidity (over 60%) and the high printing temperatures may
seal the envelopes.
Paper handling
• Be sure to select Env Feeder or MP Feeder as the paper source in the Paper Menu
and set the correct envelope size.
Maintenance
Troubleshooting
Administration
Index
The laser printing process heats envelopes to a temperature of 205°C (401°F). Use only
envelopes that are able to withstand these temperatures without sealing, excessive curling,
wrinkling, or releasing hazardous emissions. If you have any doubts about the envelopes you
are considering using, check with the envelope supplier.
For best performance, use envelopes made from 75 g/m2 (20 lb bond) paper. You can use up
to 105 g/m2 (28 lb bond) weight for the multipurpose feeder or 105 g/m2 (28 lb bond) weight
for the envelope feeder as long as the cotton content is 25% or less. Envelopes with 100%
cotton content must not exceed 90 g/m2 (24 lb bond) weight.
To minimize jams, do not use envelopes that:
•
•
•
•
•
•
•
Have excessive curl or twist
Are stuck together or damaged in any way
Contain windows, holes, perforations, cutouts, or embossing
Use metal clasps, string ties, or metal folding bars
Have an interlocking design
Have postage stamps attached
Have any exposed adhesive when the flap is in the sealed or closed position
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Choosing print material
11
Printing
• Have nicked edges or bent corners
• Have rough, cockle, or laid finishes
Paper handling
Maintenance
Choosing labels
The printer can print on many labels designed for use with laser printers. These labels are
supplied in letter size and A4 size sheets.
When printing on labels:
Troubleshooting
• Be sure to select Labels in the Paper Type menu item in the Paper Menu. (See Paper
Type for detailed information about these settings.)
• Do not load labels together with paper or transparencies in the same paper tray;
Administration
mixing print materials can cause feeding problems.
• Do not load partial sheets with areas exposed by missing labels; this can cause labels
Index
to peel off during printing, jam, and contaminate your printer and your print cartridge
with adhesive. It can also void your printer and cartridge warranties.
• Avoid using labels that may release hazardous emissions when heated.
Note: Labels are one of the most difficult print materials for laser printers. The
T620 and T622 printers require a special fuser cleaner for label
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Lexmark T620 and T622
Choosing print material
12
Printing
applications in order to optimize feed reliability. See Ordering supplies for
information on obtaining a label fuser cleaner.
Paper handling
After continuously printing approximately 10,000 page sides of labels (or each time you
replace the print cartridge), complete the following steps to maintain printer feeding reliability:
1 Print five sheets of paper.
Maintenance
2 Wait approximately five seconds.
3 Print five more sheets of paper.
Troubleshooting
For detailed information on label printing, characteristics, and design, refer to the Card Stock
& Label Guide, available on Lexmark Web site at www.lexmark.com.
Administration
Choosing card stock
Index
Card stock is single-ply and has a large array of properties. The orientation of paper fibers,
moisture content, thickness, and texture can all affect printing on card stock. See Paper
specifications for information on the preferred weight for the grain direction of print
materials.
When printing on card stock:
• Be sure to select Card Stock in the Paper Type menu item in the Paper Menu. (See
Paper Type for detailed information about these settings.)
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Lexmark T620 and T622
Choosing print material
13
Printing
• Be aware that preprinting, perforation, and creasing can significantly affect the print
quality and cause paper handling or jamming problems.
Paper handling
• Avoid using card stock that may release hazardous emissions when heated.
After printing approximately 10,000 page sides of card stock (or each time you replace the
print cartridge), complete the following steps to maintain printer feeding reliability:
Maintenance
1 Print five sheets of paper.
2 Wait approximately five seconds.
Troubleshooting
3 Print five more sheets of paper.
For more information, refer to the Card Stock & Label Guide, available on the Lexmark Web
site at www.lexmark.com.
Administration
Index
Choosing transparencies
The printer can print directly on transparencies designed for use in laser printers. Print quality
and durability depend on the transparency used. Always print samples on the transparencies
you are considering before buying large quantities.
The Paper Type setting should be set to Transparency to help prevent jams. (See Paper Type
for detailed information about this setting.) Check with the manufacturer or vendor to
determine whether your transparencies are compatible with laser printers that heat
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Choosing print material
14
Printing
Paper handling
transparencies to 212°C (414°F). Use only transparencies that are able to withstand these
temperatures without melting, discoloring, offsetting, or releasing hazardous emissions. For
detailed information, refer to the Card Stock & Label Guide, which is available on the Lexmark
Web site at www.lexmark.com.
Maintenance
Transparencies can be fed automatically from the multipurpose feeder and all standard and
optional trays, except the 2000-sheet drawer, for all printer models. See Print material
specifications for information about transparency compatibility with output options.
Be careful when you handle transparencies. Fingerprints on the surface of the transparency
cause poor print quality.
Troubleshooting
Administration
Index
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