Ricoh CH-C1, Обучение по обслуживанию

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213
Ch-C1 Training
Slide 213
Pick-up and Feed

Pick-up roller lift motor: Drops the pick-up roller onto the stack of originals

Feed motor: Rotates the pick-up roller

Details:

Just after the original set sensor detects an original, the pick-up roller lift motor switches
on, to drop the pick-up roller onto the original stack, and the HP sensor turns off.

When the leading edge of the original reaches the skew correction sensor, the pick-up
roller lift motor switches on again, to lift the pick-up roller away from the original stack.

When the trailing edge of the original passes the skew correction sensor (registration
sensor for A4 LEF/LT LEF), and there are still some originals on the tray, the pick-up roller
is again dropped onto the stack of originals.
Pick-up Roller
Lift Motor
Pick-up Roller
HP Sensor

Details of the mechanism are as follows:

When there are no originals: The pick-up roller remains up (this is the
home position).

When an original is placed on the tray: The original set sensor switches
on, and this switches the motor on. The cam releases a lever. The
lever rises and the pick-up roller drops onto the stack of paper. Then
the pick-up roller feeds the paper to the feed belt and separation roller.

When the leading edge of the original reaches the skew correction
sensor: The motor switches on again. The cam pushes the lever down
until the actuator enters the sensor and switches off the motor. This
stops the pick-up roller at the home position.

When the trailing edge of the paper passes the skew correction sensor
(A4 LEF/LT LEF: when it passes the registration sensor) with originals
still waiting for scanning: The motor switches on to feed in the next
sheet.

In addition, the pick-up roller lifts at the following times:
Just after the main machine power turns on
When the ADF top cover is opened
When there is an original jam