Oki C9000 Series User Manual page 33

Face-down stacker
The face-down stacker on the top of the printer can hold up to
500 sheets of 80g/m² standard paper, and can handle paper
stocks from 64 – 216g/m². Pages printed in reading order
(page 1 first) will be sorted in reading order (last page on top,
facing down).
Face-up stacker
The face-up stacker should be opened and the tray extension
pulled out when required for use. (With the face-up stacker either
open or closed, the driver setting of Face Down will successfully
direct prints to the Face-Down stacker.)
The face-up stacker can hold up to 250 sheets of 80g/m²
standard paper and can handle stocks up to 268g/m².
Always use this stacker and the multi-purpose feeder for paper
stocks heavier than 216g/m².
Duplex unit
This unit provides automatic two-sided printing on plain paper
fed from Trays 1 – 4 or the MP Tray. Applicable paper sizes are
A6, A5, B5, B5LEF, Executive, A4, A4LEF, Letter, LetterLEF,
Legal 13 in, Legal 13.5 in, Legal 14 in, B4, Tabloid, Tabloid Extra,
A3, A3 Wide, A3 Nobi, Custom size (100 – 328mm wide, 148 –
457.2mm long), using paper stocks in the range 75 – 120g/m².
NOTE:
LEF means the paper is fed long edge first.
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