Ricoh JP5000 Service Manual page 97

1 July, 1998 PRINTING AND PRESSURE CYLINDER
2.7.2 PAPER CLAMPING
[A]
Rear
[B]
Front
C229D041.WMF
Clamping the Paper
The paper clamper catches the leading edge of the paper after it has passed the
registration roller.
As the pressure cylinder rotates, the high point of the cam [B] reaches the bearing
[A] on the lever at the front end of the paper clamper, and the clamper opens.
When the clamper is open, the leading edge of the paper just reaches the clamper
and enters it. After the high point of the cam passes the bearing, the clamper
closes and holds the paper using magnets.
When Thick Paper mode is selected on the operation panel, the paper is not
clamped. (The clamping is not needed since thick paper does not cause paper
wrapping jams around the drum.)
So, for Thick Paper mode, the paper feed start timing at the registration roller is
delayed to prevent the paper from being caught by the clamper. Then, the motor
speeds up the paper feed to ensure the that the image transfers from the drum at
the same timing as for normal paper. The clamper will open and close without
clamping the thick paper.
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