OKI C821 Manual De Usuario

Paper recommendations > 13

The face up stacker at the rear of the printer should be opened and the tray extension 

pulled out when required for use. In this condition paper will exit via this path, regardless 

of driver settings.
The face up stacker can hold up to 100 sheets of 80g/m² standard paper, and can handle 

stocks up to 220g/m².
Always use this stacker and the multi purpose feeder for paper stocks heavier than 

128g/m².

This option provides automatic two-sided printing on the same range of paper sizes as 

tray 2/3 (i.e. all cassette sizes except A6), using paper stocks from 64-105g/m².