KYOCERA 2540 Manual Do Utilizador

6-4

Appendix

The paper surface should be smooth, but it must be uncoated. With 
paper that is too smooth and slippery, several sheets may accidentally 
be supplied at once, causing jams.

In countries that use the metric system, basis weight is the weight in 
grams of one sheet of paper one square meter in area. In the United 
States, basis weight is the weight in pounds of one ream (500 sheets) of 
paper cut to the standard size (or trade size) for a specific grade of 
paper. Paper that is too heavy or too light may be supplied incorrectly or 
cause paper jams, which may cause excessive wear to the machine. 
Mixed paper weight (i.e., thickness) may cause several sheets to be 
supplied at once accidentally and may also cause blurring or other 
copying problems if the toner fails to adhere correctly.

The recommended basis weight is between 60 and 120 g/m² (16 and 
31.5 lb/ream) for the cassettes and between 45 and 200 g/m² (12 and 53 
lb/ream) for the MP tray.

Avoid using paper that is too thick or thin. Signs that paper may be too 
thin include frequent problems with paper jams or with several sheets 
being supplied at once. Paper jams may also indicate that the paper is 
too thick. The proper thickness is between 0.086 and 0.110 mm.

Paper moisture content is the ratio of moisture to dryness expressed as 
a percentage. Moisture affects how the paper is supplied, the 
electrostatic chargeability of the paper, and how the toner adheres.

Paper moisture content varies depending on the relative humidity in the 
room. High relative humidity causes paper to become damp, making the 
edges expand so it appears wavy. Low relative humidity causes paper to 
lose moisture, making the edges tighten and weakening copy contrast.

Wavy or tight edges may cause the paper to slip when it is supplied. Try 
to keep the moisture content between 4 to 6 %. 

To maintain the right level of moisture content, bear in mind the following 
considerations.

Store paper in a cool, well-ventilated place. 

Store paper flat and unopened in the package. Once the package is 
opened, reseal it if the paper is not to be used for a while. 

Store paper sealed in the original package and box. Put a pallet 
under the carton to keep it raised above the floor. Especially during 
rainy seasons keep the paper a sufficient distance away from 
wooden or concrete floors. 

Before using paper that has been stored, keep it at the proper 
moisture level for at least 48 hours. 

Do not store paper where it is exposed to heat, sunlight, or 
dampness.