Ricoh C231 Service Manual page 283

2. DETAILED SECTION DESCRIPTIONS
2.1 PAPER FEED
2.1.1 PAPER FEED/SEPARATION PRESSURE ADJUSTMENT
MECHANISM
Thick Paper
Standard
Thin Paper
[B]
The C237 model has an additional adjustment level for paper feed pressure. The
paper feed pressure adjustment now has 3 levels.
C231 model
Standard, Thick Paper
Standard: Paper feed pressure via the weight of the paper feed roller unit [A].
Thick Paper: Gives a higher pressure, using pressure from the roller [B] in
addition to the weight of the paper feed roller unit [A].
Thin Paper:
Gives a lower pressure by lifting up the feed roller unit with a spring
[C].
NOTE: The paper feed pressures for standard and thick paper are the same as for
the C231 model.
SM
[C]
C237 model
Standard, Thick Paper, Thin Paper
2-1
PAPER FEED
[A]
C237D574.WMF
C231/C237/C238