Original Feed - Ricoh FT8880 Service Manual

5 June 1992 RDH

16.3 ORIGINAL FEED

16.3.1 Original Separation/Feed (Original Stack Mode)
[A]
[B]
[E]
[F]
[B]
[D]
[C]
[F]
[G]
[H]
1. Air knife and shutter
The air from the blower motor [A] is blown through the air knife nozzles [B] to
the leading edge [C] of the original stack. The blower motor keeps blowing air
from the beginning to the end of the original stack mode to prevent
multi-feeding.
After the originals are separated by the air knife, the vacuum shutter solenoid
[D] is energized by a paper feed signal from the main PCB. The vacuum
shutter [E] closes the air hole on the vacuum duct [F]. The blower draws air
from the vacuum section [F]. The bottom sheet original [G] is held against the
feed-in belts by the suction. Until, the feed-in belt rotates. The bottom sheet
original [H] is then fed.
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