Ricoh B230 Service Manual page 1125

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 [E] is closed. When the original has been fed
onto the inverter table, the feed motor switches on in reverse. The original is then fed by
the inverter roller [F], 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 again to be turned over. This is done so that
the duplex copies will be properly stacked front side down in the exit tray [G] in the correct
order.
Original Sensor
During one-to-one copying, copy paper is fed to the skew correction roller in advance
(while the original is still being scanned), to increase the copy speed. The original sensor
monitors the stack of originals in the feeder, and detects when the trailing edge of the last
page has been fed in. The main CPU then stops the copier from feeding an unwanted
extra sheet of copy paper.
2.2.6 CONDITIONS FOR JAM DETECTION
Jam Mode
When turning on the machine, the skew correction sensor, registration
sensor or exit sensor detects an original.
When the cover is closed or DF is down, the skew correction sensor,
Initial
registration sensor or exit sensor detects an original.
When the cover is opened or DF is lifted up, the skew correction
sensor, registration sensor or exit sensor detects an original.
SM
Detection Timing
23
Basic Operation
B789