Ricoh VT3500, Service Manual

Page: 78 / 330

4.4 PAPER SEPARATION MECHANISM
Spring tension [F] holds the separation plate [G] against the upper separation
roller. A rubber pad is on top of the separation plate to separate a few sheets
of paper before they reach the lower separation roller. If too many sheets of
paper are fed to the lower separation roller at the same time, the lower
separation roller will maybe not separate the sheets, it can separate only two
or three sheets of paper.
Springs pull lever [A] and this pushes up the lower separation roller [E]. Then
this roller presses the sheets to be fed against the upper separation roller [B].
Also, the lower separation roller does not turn in the paper feeding direction.
(It turns in the opposite direction due to the one-way clutch bearings [D]
provided on both right and left separation levers [A].) When 2 sheets of paper
are fed, brake force is applied to the lower sheets of paper due to the friction
between the paper and the lower separation roller. Then, the sheets are
separated and a sheet of paper is fed to the second feed rollers.
The pressure between upper and lower separation rollers can be adjusted in
two steps by changing the right and left separation pressure adjusting levers
[C] as follows:
Levers Up: Separation pressure decreases.
Levers Down: Standard position.
When dog-eared or wrinkled prints are delivered, the separation pressure
should be decreased.
[F]
[C]
[D]
[E]
[A]
[B]
[A]
[G]
[C]
[D]
1 December 1993
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