Ricoh FT7770 Service Manual page 131

- Registration Rollers -
The registration rollers stop turning just before the paper arrives. The pull-
out rollers and the relay rollers, which do not stop turning, force the paper
against the registration rollers.
and the leading edge is set parallel to the registration rollers.
At the proper time, the registration roller clutch turns on and feeds the
paper to the drum.
Sensor
p~e-registration
Paper
misfeeds
sometimes not detected until the next copy run.
detects misfed paper remains at this position.
misfeeds during copying.
Registration timing is set by SP 32.
in the copy path leading up to the registration rollers
Consequently, the paper starts buckling
The pre-registration sensor
This sensor does not detect
2-75
30
April, '89
are