Kyocera KM-2540 Advanced Operation Manual page 115

Appendix
Paper Grain
Paper is cut into sheets either with the grain running parallel to the length
(long grain) or with the grain parallel to the width (short grain). Avoid
using short-grain paper because it may be supplied incorrectly; use long-
grain paper.
Other Paper Specifications
Porosity: The density of the paper fibers.
Stiffness: Paper must be stiff enough or it may buckle in the machine,
causing jams.
Curl: Most paper naturally tends to curl in one direction after the
package is opened. When paper passes through the fixing unit, it curls
upward slightly. To deliver flat printouts, load the paper so that the curl
faces towards the bottom of the paper tray.
Static electricity: During copying, paper is electrostatically charged so
that the toner adheres. Choose paper that can be discharged quickly so
that copies do not cling together.
Whiteness: Paper whiteness affects copy contrast. Use whiter paper for
sharper, brighter copies.
Quality: Machine problems may occur if sheet sizes are not uniform or if
corners are not square, edges are rough, sheets are uncut, or edges or
corners are crushed. In order to prevent these problems, be especially
careful when you cut the paper yourself.
Packaging: Choose paper that is properly packaged and stacked in
boxes. Ideally, the packaging itself should have been treated with a
coating to inhibit moisture.
Specially treated paper: We do not recommend copying onto the
following types of paper, even if it conforms to the basic specifications.
When you use these kinds of paper, purchase a small amount first as a
sample to test.
• Glossy paper
• Watermarked paper
• Paper with an uneven surface
• Perforated paper
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