Paper Detection Mechanism (See Figure 2-15.) - OKIDATA ML320 Turbo Service Manual

Page: 18
Service Guide ML320/321Turbo
Chapter 2 Operation Description
2.2.6 Paper Detection Mechanism (See Figure 2-15 below).
(1) Cut sheet detection
When the sheet is inserted, point A is pushed backward and the paper near end lever B rotates
counterclockwise (CCW).
At this time, the rear sensor lever rotates counterclockwise (CCW) and pulls out of the rear and top paper
end sensor to detect that the sheet is inserted.
The procedure for the paper end is the reverse, that is, detection occurs when the paper end sensor is
blocked.
(2) Rear feed detection
When the sheet is fed from the push tractor, the point B is pushed to the front side and the paper near end
lever A rotates clockwise (CW). At this time, the rear sensor lever rotates counterclockwise (CCW), and
pulls out of the rear and top paper end sensor to detect that the sheet is provided.
The procedure for the paper end is the reverse, that is, detection occurs when the rear sensor lever
interrupts the sensor.
(3) Bottom feed detection
When the sheet is fed from the bottom, the point C rotates clockwise (CW). When the bottom sensor lever
rotates clockwise (CW), it pulls out of the bottom paper end sensor to detect that the sheet is inserted.
The procedure for the paper end is the reverse, that is, detection occurs when the bottom sensor lever
interrupts the sensor.