Canon DADF-M1 Service Manual - page 32
Chapter 2
2-10
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 mechanism may be enabled or disabled in service mode: DISPLAY>FEEDER>OPTION>SL-DBL (0: high-speed duplexing mode (de-
fault); 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:
Reading the back of
the 1st sheet.
Picking up the 2nd sheet.
Arching the 2nd sheet.
Idly moving the 1st sheet.
Idly moving the 1st sheet.
Moving the 2nd sheet.
Delivering the 1st sheet.
Reading the 2nd sheet.