Canon ir5570, ir6570 手册

2-15

F-2-13

2.2.6  Idle Feed/Reversal Pickup/Delivery (single-sided original of

mixed configurations -> single-sided print)

0002-7299

The following show the flow of originals:

Arching the 1st sheet.

Standing by for reading 
the 1st sheet.

Reading the face of the 
1st sheet.
Moving the 2nd sheet.

Delivering the 1st sheet.
Idly moving the 2nd sheet.