OKIDATA OKIPAGE 8c, Руководство по обслуживанию

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When the pulse motor of the front feeder turns right (in the direction of "A"), the front hopping roller turns
left (in the direction of "b") to drive the cam. This cam moves up an down the pinch roller 2. The one-way
clutch gears are made to turn only in a present direction by means of the one-way clutches.
(a) First and second hopping rollers
1 When the front edge of the paper passes by the pickup roller, the pulse motor of the front feeder turns
counter-clockwise (in the direction of "b" to drive the cam. The cam moves up the pinch roller 2. Although
the one-way clutch gear A is also rotating, the hopping roller of the front feeder does not rotate (because
of the one-way clutch).
2 When the rear edge of the paper passes by the Entrance sensor 2, the pulse motor of the front feeder
turns counter-clockwise (in the direction of "b") to drive the cam. The cam moves down the pinch roller 2
until it is sensed by the sensor. Although the one-way clutch gear A is also rotating, the hopping roller of
the front feeder does not rotate (because of the one-way clutch).