Toshiba e-studio 167 Service Manual page 246

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
of the 2nd sheet
e-STUDIO167/207/237
AUTOMATIC DUPLEXING UNIT (ADU) (OPTION: MD-0103)
Back side of the 2nd sheet
Fig. 14-4
14 - 8
Front side of the 1st sheet
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Front side