Lexmark X925 7541-03 series, Service Manual

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General information
1-9
7541-03x
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Media guidelines
Selecting the appropriate media for the printer helps avoid printing problems.
For detailed information about media characteristics, see the Card Stock & Label Guide available on the
Lexmark Support Web site at http://support.lexmark.com .
Paper
To ensure the best print quality and feed reliability, use 90 g/m
2
(24 lb) xerographic, grain long paper. Business
papers designed for general business use may also provide acceptable print quality.
We recommend Lexmark part number 12A5950 letter-size glossy paper and Lexmark part number 12A5951 A4-
size glossy paper.
Always print several samples before buying large quantities of any type of media. When choosing any media,
consider the weight, fiber content, and color.
The Laser printing process heats paper to high temperatures of 180°C (356°F) for non-MICR applications. Use
only paper able to withstand these temperatures without discoloring, bleeding, or releasing hazardous
emissions. Check with the manufacturer or vendor to determine whether the paper chosen is acceptable for
laser printers.
When loading paper, note the recommended print side on the paper package, and load paper accordingly.
Paper characteristics
The following paper characteristics affect print quality and reliability. Consider these characteristics when
evaluating new paper stock.
For detailed information, see the Card Stock & Label Guide available on the Lexmark Web site at http://
support.lexmark.com.
Weight
The printer can automatically feed paper weights from 60 to 220 g/m
2
(16 to 58 lb bond) grain long. Paper lighter
than 60 g/m
2
(16 lb) might not be stiff enough to feed properly, causing jams. For best performance, use 75 g/m
2
(24 lb bond) grain long paper. To use paper smaller than 182 x 257 mm (7.2 x 10.1 in.), we recommend 90 g/m
2
(24 lb bond) or heavier paper.
Curl
Curl is the tendency of media to curve at its edges. Excessive curl can cause paper feeding problems. Curl can
occur after the paper passes through the printer, where it is exposed to high temperatures. Storing paper
unwrapped in hot, humid, cold and dry conditions, even in the trays, can contribute to paper curling prior to
printing and can cause feeding problems.
Smoothness
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 or print
quality issues. Smoothness needs to be between 100 and 300 Sheffield points; however, smoothness between
150 and 250 Sheffield points produces the best print quality.