Kyocera DU-21 Manual Del Usuario página 34

Composition
Do not use paper that has been coated or surface-treated and contains plastic or
carbon. The heat of fusing can cause such paper to give off harmful fumes.
Bond paper should contain at least 80% pulp. Not more than 20% of the total
paper content should consist of cotton or other fibers.
Paper size
Printer's cassettes are available for the paper sizes listed in Table 2. The
dimensional tolerances are ±0.7 mm (±0.0276 inches) for the length and width.
The angle at the corners must be 90° ±0.2°.
Table 2 Paper Sizes for Printer's Cassette Paper Feed
Printer's cassette
Legal
Letter
ISO A4
JIS B5
ISO A5
Smoothness
The paper should have a smooth, uncoated surface. Paper with a rough or sandy
surface can cause voids in the printed output. Paper that is too smooth, however,
can cause multiple feeding and fogging problems. (Fogging is a gray background
effect.)
Basis weight
Basis weight is the weight of a standard quantity of paper. In the traditional
system the standard quantity is a ream consisting of 500 sheets measuring 17 × 22
inches each. In the metric system the standard quantity is 1 square meter.
Paper that is too light or too heavy can cause misfeeding, jams, and premature
wear of the duplexer and the printer. Uneven paper weight can cause multiple
feeds, print defects, poor toner fusing, blurring, and other print quality problems.
The proper weight is 70 to 90 g/m
Important
Although the printer can print on lighter paper with the
basis weight of as low as 60 g/m
printing is not possible with the paper weight of less than 70
g/m
Size
8.5 × 14 in
8.5 × 11 in
210 × 297 mm
182 × 257 mm
148 × 210 mm
2
(19 to 24 lbs/ream).
2
.
2
in simplex printing, duplex
19