Ricoh PRIPORT VT 2000 Series Service Manual page 117

28 February '91
5.2 PAPER FEED ROLLER/UPPER SEPARATION ROLLER
MECHANISM
[C]
[L]
[H]
[G]
[F]
[B]
[K]
[M]
[E]
[A]
[I]
[D]
The sector gear [A], located on the non-operation side, rotates the paper
feed roller [B] and the upper separation roller [C]. When the paper feed sole-
noid [D] turns on, the link [E] is pulled and the sector stopper [F] turns coun-
terclockwise. This is because the sector gear lock is released when the
cam roller [G] is positioned on the top of the paper feed roller cam [H].
Then, the cam roller [G] of the sector gear moves along the cam face of the
paper feed roller cam [H].
When moving the cam roller [G] from the bottom to the top of the paper
feed roller cam [H], the sector gear [A] turns clockwise and the gear [I] is
turned counterclockwise. The rotation of the gear [I] is transmitted to the up-
per separation roller shaft [J] by the one-way clutch inside the gear [I], and
the upper separation roller [C] turns counterclockwise.
At the same time, the pulley [K] mounted on the upper separation roller
shaft [L] turns, and the belt [M] rotates the paper feed roller [B] counterclock-
wise to feed the printing paper.
When the cam roller [G] moves from the top to the bottom of the paper feed
roller cam [H], the sector gear [A] turns counterclockwise and the gear [I] is
turned clockwise. However, due to the one-way clutch inside the gear [I],
the upper separation roller [C] and the paper feed roller [B] do not turn.
2-90