Oki OL1200 Service Manual page 32

registration roller. (The skew of the paper can thus be corrected.)
(b) Hopping (front feeder)
1 Rotating the pulse motor in the direction b (Counter Clock-wise direction) drives the hopping roller of the
front feeder to advance the paper until the inlet sensor turns on. At the same time, the one-way clutch
gear A also rotates. However, the hopping roller of the 1st tray will not rotate due to the one-way bearing.
A cam to push down the front feeder plate is attached on each of the ends of the hopping roller shaft.
These cams push down the front feeder plate when the hopping operation is not performed so as to
facilitate the setting of paper into the tray. A microswitch is provided under the front feeder plate to detect
that the front feeder plate is at the lower position. When the front feeder plate is at the lower position, this
microswitch causes the motor to stop.