Canon DADF-M1 Service Manual page 37

Reading the back of
the 1st sheet.
Picking up the 2nd sheet.
Arching the 2nd sheet.
Idly moving the 1st sheet.
F-2-9
2. High-speed Duplex Mode
In addition to the conventional duplexing operation (face -> back -> idle rotation ->delivery), the machine is
equipped with a mechanism referred to as "high-speed duplexing, " in which 2 sheets of paper are reversed inside its
paper path.
The high-speed duplexing operation is exclusively for A4/LTR, and the machine handles the originals at a speed of
35 ipm (If in low-speed duplexing, 25 ipm).
The high-speed duplexing
DISPLAY>FEEDER>OPTION>SL-DBL (0: high-speed duplexing mode (default); 1: low-speed duplexing mode).
If the user tends to use originals not suited to high-speed duplexing mode, be sure to select low-speed duplexing mode
using the foregoing service mode item. The following shows the flow of originals in high-speed duplexing mode:
Idly moving the 1st sheet.
Moving the 2nd sheet.
Delivering the 1st sheet.
Reading the 2nd sheet.
mechanism may be enabled or disabled
Chapter 2
in service mode:
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