Kyocera FS FS-1920 Operation Manual page 132

The table below lists the specifications for adhesive label paper.
Item
Weight of top sheet
Composite weight
Thickness of top sheet
Composite thickness
Moisture content
Table 2-6
Postcards
Fan the stack of postcards and align the edges before loading them in the
MP tray. Make sure the postcards you are going to set are not curled.
Feeding curled postcards may cause paper jams.
Some postcards have rough edges on the back (those are created when the
paper is cut). In this case, put the postcards on a flat place and rub the
edges with, for example, a ruler to smooth them.
Envelopes
The printer can print on envelopes using paper with a basis weight of 60 to
79 g/m (16 to 21 lb/ream). Envelopes must be manually fed.
²
An envelope is a more complex object than a single sheet of paper. For this
reason, it may not be possible to obtain consistent print quality over the
entire envelope surface.
Many envelopes have a diagonal grain orientation (See
page 2-6). This orientation is more likely to wrinkle and crease on its way
through the printer. Before purchasing envelopes for use with the printer,
test a sample to verify the envelope's suitability.
Do not use envelopes that have an encapsulated liquid adhesive.
Avoid long printing runs consisting of envelopes only. Extensive envelope
printing can cause premature printer wear.
Specification
44 to 74 g/m² (12 to 20 lb/ream)
104 to 151 g/m² (28 to 40 lb/ream)
0.086 to 0.107 mm (3.9 to 4.2 mils)
0.115 to 0.145 mm (4.5 to 5.7 mils)
4 to 6 % (composite)
2-9
Special Paper
Paper Grain on