Toshiba e-STUDIO281c Service Manual page 385

2) Double-paper alternateness circulation
With A4/LT size paper or smaller, duplex printing is performed for two sheets at a time as shown
below.
Back side of the 1st sheet→Back side of the 2nd sheet→Front side of the 1st sheet→Front side of
the 2nd sheet
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Fig. 17-4
17 - 7
e-STUDIO281c/351c/451c
AUTOMATIC DUPLEXING UNIT (ADU)
17