Oki C5800 - Manual (Page 56)

Printer settings in Mac> 56
P
RINTER SETUP OPTIONS
Printer options
Media weight
Select the thickness or type of paper in the printer. It is
important to set this correctly as it affects the temperature
at which the toner is fused to the paper. For example, if
you are printing on normal A4 paper, do not select Labels
or Transparency as this may cause toner smearing and
paper jams.
Auto tray switch
If the printer runs out of paper in the current tray, Auto
Tray Switch automatically changes to a tray that has the
same type of paper and continues printing.
Paper size check
Select Paper Size check if you want the printer to warn you
when the document paper size is different from the paper
in the printer.
A warning message is displayed and printing continues
when you load the correct paper in the paper tray and
press ONLINE. When this option is deselected, the printer
uses the paper loaded in the selected tray regardless of the
document size.