Oki ML490 Series, Руководство по обслуживанию

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2.2.6 Paper detection mechanism (See Figure 2-14.)
(1) Cut sheet detection
When the cut sheet is inserted, the point A is pushed backward and the paper near end
lever B rotates counter clockwise (CCW).
At this time, the rear sensor lever rotates counterclockwise (CCW), the rear sensor lever
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 made in the reverse order, that is, its detection is
performed 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 made in the reverse order, that is, its detection is
performed when the rear sensor lever intercepts 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 provided.
The procedure for the paper end is made in the reverse order, that is, its detection is
performed when the bottom sensor lever intercepts the sensor.
Bottom paper end lever
B
Shaded portion
Paper end lever
A
Sensor lever
Paper end sensor
Figure 2-14