Lenovo LJ2500 User Manual page 121

Long grain and short grain
The pulp fiber of the paper is aligned during paper manufacture.
What we call long grain paper is paper where the fiber is parallel
to the paper carriage direction of the paper.
Paper can be classified into two types, long grain and short
grain. Long grain paper's fiber direction is parallel to the carriage
direction of the paper in the printer. Short grain paper's fiber
direction is vertical to the carriage direction of the paper in the
printer. Though most plain paper for copying is long grain, some
is short grain. We recommend that you use long grain paper for
this printer. Short grain paper is too weak for the paper carriage
of the printer.
Acid paper and neutralized paper
Paper can be classified as either acid paper or neutralized
paper.
Though modern paper manufacture methods started with acid
paper, recently neutralized paper is taking the place of acid
paper because of environment or preservation issues.
However, many forms of acid paper can be found in recycled
paper. We recommend that you use neutralized paper for this
printer.
You can use an acid paper check pen to distinguish acid paper
from neutral paper.
Print surface
The characteristics may differ a little between the face side and
reverse side of a sheet of paper.
Usually, the opening side of the ream of paper package is the
print side. Follow any indication of the print side on the paper
package. Typically, the paper side is indicated with an arrow.
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APPENDIX