Kyocera DU-21 Manual Del Usuario página 37

Special paper
The following types of special paper can be used:
Colored paper
Preprinted paper
Use paper that is sold specifically for use with copiers (heat-fusing type).
Since the composition and quality of special paper vary considerably, special
paper is more likely than white bond paper to give trouble during printing. No
liability will be assumed if moisture etc. given off in printing on special paper
causes harm to the machine or operator.
Note
Specifications for each type of special paper are given below.
Colored paper
Colored paper should satisfy the same conditions as white bond paper, listed in
Table 1. In addition, the pigments used in the paper must be able to withstand the
heat of fusing during the printing process (up to 200°C or 392°F).
Preprinted paper
Preprinted paper should have a bond paper base. The preprinted ink must be able
to withstand the heat of fusing during the printing process, and must not be
affected by silicone oil.
Do not use paper with any kind of surface treatment, such as the type of paper
commonly used for calendars.
22
Before purchasing any type of special paper, test a sample on
the duplxer and the printer and check that printing quality is
satisfactory.