Lexmark C734dn Service Manual page 34

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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. For 60 to 135 g/m
bond) paper, grain long paper is recommended. For papers heavier than 135 g/m
Fiber content—Most high-quality xerographic paper is made from 100% chemically treated 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 can negatively affect paper handling.
Unacceptable paper
The following paper types 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
• Preprinted papers with chemicals that may contaminate the printer
Preprinted papers that can be affected by the temperature in the printer fuser
•
Preprinted papers that require a registration (the precise print location on the page) greater than ±2.3 mm
•
(±0.9 in.), such as optical character recognition (OCR) forms
Note: In some cases, registration can be adjusted with a software application to successfully print on
these forms.
• Coated papers (erasable bond), synthetic papers, thermal papers
Rough-edged, rough or heavily textured surface papers, or curled papers
•
Recycled papers that fail EN12281:2002 (European)
•
Paper weighing less than 60 g/m
•
Multiple-part forms or documents
•
Selecting paper
Using appropriate paper prevents jams and helps ensure trouble-free printing.
To help avoid jams and poor print quality:
• Always use new, undamaged paper.
Before loading paper, know the recommended print side of the paper. This information is usually indicated
•
on the paper package.
Do not use paper that has been cut or trimmed by hand.
•
• Do not mix paper sizes, types, or weights in the same source; mixing results in jams.
Do not use coated papers unless they are specifically designed for electrophotographic printing.
•
Selecting preprinted forms and letterhead
Use these guidelines when selecting preprinted forms and letterhead:
Use grain long for 60 to 90 g/m
•
Use only forms and letterhead printed using an offset lithographic or engraved printing process.
•
• Avoid papers with rough or heavily textured surfaces.
Use papers printed with heat-resistant inks designed for use in xerographic copiers. The ink must be able to
withstand temperatures up to 190°C (374°F) without melting or releasing hazardous emissions. Use inks that
are not affected by the resin in toner. Inks that are oxidation-set or oil-based generally meet these requirements;
latex inks might not. When in doubt, contact the paper supplier.
Preprinted papers such as letterhead must be able to withstand temperatures up to 190°C (374°F) without
melting or releasing hazardous emissions.
Service Manual
1-14
2
(16 lb)
2
(16 to 20 lb) weight paper.
2
(16 to 36 lb
2
, grain short is recommended.
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