❈4 As the air knife solenoid is operated according to the
number of sheets stacked when duplex stacking is
completed, the number of sheets fed are counted by the
duplex paper feed sensor.
❈5 The OFF timing of the vacuum solenoid is deter-
mined 0.1 second after determining that all the paper on
the tray has been fed.
❈6 When using the ADF, the duplex paper feed signal is
generated at a fixed interval after stacking is finished for
the first side copies.
The duplex paper feed signal in the platen mode is gen-
erated at the 413th pulse after the pulse count set to 0
by pressing the Start key again.