Ricoh FT5034C Service Manual page 254

6.3 ORIGINAL TRANSPORTATION MECHANISM
The transport belt is directly driven by the motor's worm-gear.
The registration rollers feed the original to the transport belt until slightly after the
original trailing edge passes the registration sensor. Then the motor pauses and
reverses for a few pulses. This forces the original against the left scale and thus
aligns the edge of the original with the scale to prevent original skew.
6.4 ORIGINAL FEED-OUT MECHANISM
The feed-out roller is connected to the transport belt by the feed-out roller drive belt
(an O-ring belt). At the end of scanning, the ADF motor starts turning again after a
feed-out signal from the copier. Then the feed-out roller feeds out the original from
the ADF.
6.5 NEXT ORIGINAL FEED
When the trailing edge of the original passes the feed-out sensor, the feed-in clutch
turns on to feed the next original. The feed-in clutch on timing depends on the
original size.
6.6 COMPLETION OF ORIGINAL FEED
There is a disk with a notch on the pick-up roller shaft. The flat surface of the pick-up
roller is positioned upward when the pick-up roller positioning sensor detects the
notch.
When the feed-in clutch turns on, the pick-up roller rotates together with the feed
roller. During a copy job for a set of originals, the copier disregards the output of the
pick-up roller positioning sensor. However, when the last original is fed out from the
ADF, the ADF motor keeps turning and the feed-in clutch turns on until the pick-up
roller positioning sensor detects the notch in the pick-up roller shaft. This is to
position the flat surface of the pick-up roller upward for easy inserting of the next set
of originals.
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