Paper Feed And Registration - Ricoh FT4220 Service Training Manual

10. PAPER FEED AND REGISTRATION

10.1 OVERVIEW
[C]
FT4220 copier has two paper feed stations (1 cassette + 2 paper trays) and
manual feed table [A]. FT4222 copier has three paper feed stations (1
cassette + 2 paper trays) and manual feed table.
The first feed station uses a cassette [B] which can load 500 sheets, and the
second and third feed stations use a paper tray [C] which can load 250
sheets. The manual feed table can load 50 sheets. The manual feed table
utilizes the feed mechanism of the first feed station.
The first feed station uses a FRR feed system. Rotation of the pick-up roller
[D] drives the top sheet of paper from the cassette to the feed and the
reverse rollers. The feed [E] and reverse [F] rollers then take over the paper
drive. If more than one sheet is fed by the pick-up roller, the reverse roller
rotates in the opposite direction and prevents all but the top sheet from
passing through to the registration rollers [G].
The second and third feed stations use the semicircular feed roller [H] and
corner separator [I] system. The semicircular feed roller makes one rotation
to drive the top sheet of paper to the relay rollers [J], which then feed the
sheet to the registration rollers. The corner separator allows only one sheet to
feed.
STM
[H]
[I]
2-58
[A]
[D]
[E]
[F]
[J]
[G]
FT4220/4222
[B]