Double-Sided Originals - Ricoh B121 Service Manual

ORIGINAL TRANSPORT AND EXIT

2.3.2 DOUBLE-SIDED ORIGINALS

[G]
[A]
[B]
B379D204.WMF
When the registration sensor [B] detects the leading edge of the original, the DF
feed motor (which drives the feed roller) and transport motor (which drives the
transport roller) both switch off. After a brief interval, the transport motor alone
reactivates to drive the first transport roller [A] and second transport roller [G] and
the exit roller [F]. The front side of the original is then scanned.
When the original exit sensor [C] detects the leading edge of the original, the
junction gate solenoid is activated and the junction gate [D] opens. The original is
then transported towards the reverse table [H].
Soon after the trailing edge of the original passes the exit sensor [C], the junction
gate solenoid switches off and the junction gate [D] is closed. When the original
has been fed onto the reverse table, the DF feed motor switches on in reverse. The
original is then fed by the reverse roller [E] and then by the exit roller [F] and first
transport roller [A] to the scanning area (where the reverse side will be scanned).
B379
[F]
[C]
[A]
8
[H]
[E]
[D]
A858D205.WMF
[E]
[D]
[F]
SM