Samsung ML-1200 - Manual (Page 54)

A PPENDIX A.7 A PPENDIX A.6
Paper storage environmental conditions directly affect the feed
operation.
Ideally, the printer and paper storage environment should be
at or near room temperature, and not too dry or humid.
Remember that paper is hygroscopic; it absorbs and loses
moisture rapidly.
Heat works with humidity to damage paper. Heat causes the
moisture in paper to evaporate, while cold causes it to
condense on the sheets. Heating systems and air conditioners
remove most of the humidity from a room. As paper is opened
and used, it loses moisture, causing streaks and smudging.
Humid weather or water coolers can cause the humidity to
increase in a room. As paper is opened and used it absorbs
any excess moisture, causing light print and dropouts. Also, as
paper loses and gains moisture it can become distorted. This
can cause paper jams.
Care should be taken not to purchase more paper than can be
used in a short time (about 3 months). Paper stored for long
periods may experience heat and moisture extremes, which
can cause damage. Planning is important to prevent damage to
large supplies of paper.
Unopened paper in sealed reams can remain stable for several
months before use. Opened packages of paper have more
potential for environment damage, especially if they are not
wrapped with a moisture-proof barrier.
The paper storage environment should be properly maintained
to ensure optimum printer performance. The required condition
is 20° to 24°C (68° to 75°F), with a relative humidity of
45% to 55%. The following guidelines should be considered
when evaluating the paper’s storage environment:
• Paper should be stored at or near room temperature.
• The air should not be too dry or too humid.
• The best way to store an opened ream of paper is to rewrap it
tightly in its moisture-proof wrapping. If the printer
environment is subject to extremes, unwrap only the amount
of paper to be used during the day’s operation to prevent
unwanted moisture changes.
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
90 g/m 2 (24 lbs), otherwise, jamming may occur.
• Construction: Prior to printing, envelopes should lie flat with
less than 6 mm (0.25 in.) curl.
• Condition: Envelopes should not be wrinkled, nicked, or
otherwise damaged.
• Temperature: Use envelopes that are compatible with the
heat and pressure of the printer.
• Size: Use only envelopes within the following size ranges.
Minimum Maximum
216 X 356 mm
(8.5 X 14 in.)
76 X 127 mm
(3 X 5 in.)
95 X 127mm
(3.8 X 5 in.) Automatic input
tray
Manual input tray
Note: You may experience some paper jams when using any
media with a length of less than 127 mm (5 in.). This may be
caused by paper that has been affected by environmental
conditions. For optimum performance, insure you are storing
and handling the paper correctly. Please refer to “Printer and
Paper Storage Environment” on page
A.6 .
Paper Specifications Paper Specifications
Printer and Paper Storage Environment Envelopes