Kyocera FS-1018MFP Advanced Operation Manual page 177

ADVANCED OPERATION GUIDE
Thickness (Caliper)
Thick paper is referred to as high-caliper paper and thin paper as low-
caliper paper. The paper used with the machine should be neither
extremely thick nor extremely thin. If you are having problems with paper
jams, multiple feeds, and faint printing, the paper you are using may be too
thin. If you are having problems with paper jams and blurred printing the
paper may be too thick. The correct thickness is 0.086 to 0.110 mm (3.4 to
4.3 mils).
Moisture Content
Moisture content is defined as the percent ratio of moisture to the dry mass
of the paper. Moisture can affect the paper's appearance, feed ability, curl,
electrostatic properties, and toner fusing characteristics.
The moisture content of the paper varies with the relative humidity in the
room. When the relative humidity is high and the paper absorbs moisture,
the paper edges expand, becoming wavy in appearance. When the relative
humidity is low and the paper loses moisture, the edges shrink and tighten,
and print contrast may suffer.
Wavy or tight edges can cause jams and alignment anomalies. The
moisture content of the paper should be 4 to 6 %.
To ensure correct moisture content, it is important to store the paper in a
controlled environment. Some tips on moisture control are:
• Store paper in a cool, dry location.
• Keep the paper in its wrapping as long as possible. Re-wrap paper
that is not in use.
• Store paper in its original carton. Place a pallet etc. under the carton
to separate it from the floor.
• After removing paper from storage, let it stand in the same room as
the machine for 48 hours before use.
• Avoid leaving paper where it is exposed to heat, sunlight, or damp.
Paper Grain
When paper is manufactured, it is cut into sheets with the grain running
parallel to the length (long grain) or parallel to the width (short grain). Short
grain paper can cause feeding problems in the machine. All paper used in
the machine should be long grain.
Other Paper Properties
Porosity: Refers to the density of the paper structure; that is, to how
openly or compactly the fibers are bonded.
Stiffness: Limp paper can buckle inside the machine, while paper that is
too stiff may bind. Either way the result is a paper jam.
Appendix-5