Epson AcuLaser C4000 Reference Manual page 30

Caution:
c
EPSON Color Laser Coated Paper
This media is thicker than EPSON Color Laser Paper and
produces glossier printing.
To print on EPSON Color Laser Coated Paper from the MP tray,
choose Coated as the Paper Type setting in the printer driver. This
setting is optimized for printing on coated paper.
If you want to feed coated paper from the standard lower cassette
or the optional Large Capacity Paper Unit, choose Plain as the
Paper Type setting in the printer driver.
If Coated is selected, printouts may be superior in quality to those
printed with the Plain setting.
S041383 (A4)
Note:
Coated appears in the Paper Type list when the Add Coated to
the Paper Type settings check box is selected in the Extended
Settings dialog box. To access this dialog box from the printer driver
in Windows, click Extended Settings on the Optional Settings
menu. In Macintosh, click the
Basic Settings dialog box.
Duplex printing using the duplex unit is not possible when Coated
is selected as the Paper Type setting in the printer driver.
18 Paper Handling
Do not use other EPSON media such as EPSON special
media for ink jet printers, as this can cause paper jams and
damage the printer.
Do not use the media listed above in other printers, except
when specified in the documentation.
Extended Settings icon in the