Ricoh D009 Service Manual page 719

Basic Operation
speed. After skew correction, the feed and transport motors feed the original through the
scanning area at a lower speed (the scanning area contains the original exposure guide [B]
and DF exposure glass [C]). After scanning, the original is fed out by the transport roller [D]
and exit roller [E].
Double-Sided Originals
After skew correction, the ADF feed and transport motors drive the skew correction roller
[A], registration roller [B], transport roller [C] and the exit roller [D]. The front side of the
original is then scanned.
When the original exit sensor [E] detects the leading edge of the original, the junction gate
solenoid is activated and the junction gate [F] opens. The original is then transported
towards the inverter table.
Soon after the trailing edge of the original passes the exit sensor, the junction gate solenoid
switches off and the junction gate [F] is closed. When the original has been fed onto the
inverter table, the ADF inverter motor switches on. The original is then fed by the inverter
roller [G], and then by the skew correction roller [A] and registration roller [B] to the
scanning area (where the reverse side will be scanned).
The original is then sent to the inverter table [H] again to be turned over. This is done so
that the duplex copies will be properly stacked front side down in the exit tray [I] in the
correct order.
Original Sensor
During one-to-one copying, copy paper is fed to the skew correction roller in advance
SM 29 B802