Manual
Operating
2.1.1.1 Paper Feeding
There are
methods of feeding the paper into the printer. One is by using the multi-purpose
tray (standard tray), and the other is by using the
250-sheet lower paper cassette.
Paper-out conditions are detected by the paper empty
sensor, located above the paper tray or the
cassette. While paper is in the tray or cassette, the detection lever for the paper empty sensor
is
lifted. When the paper supply runs out, the detection lever is lowered, causing the shutter to
interrupt light
the LED the photo-transistor. This causes the signal to go HIGH, informing
the engine driver that the paper tray or the cassette is empty.
When the paper take-up solenoid is actuated, the paper take-up
rotates and feeds the first
page. The paper take-up roller stops after one rotation. Unlike the
and
which have a synchronizing roller, the
and
1000/1500
have synchronizing roller is installed. The timing to align the leading edge of the page with
image is detected by the paper take-up sensor.
When the page is on top of the paper take-up sensor,
detection lever is lowered, allowing light
from the LED to reach the photo-transistor.
causes the signal to go HIGH, informing the
engine driver that paper has been detected.
The paper exit
sensor is located beyond the fusing roller in the paper path. When paper passes the
paper exit sensor, the detection lever is lowered, allowing light from the LED to reach the
photo-transistor. This causes the
to go HIGH, informing the engine driver that paper has
been delivered.
Multi-Purpose Tray (Standard Tray)
The paper guide can be moved to fit against the sides of various sizes of paper, allowing them to be
fed.
Although the paper take-up roller stops after one rotation, the transport rollers continue to feed the
first page, because these rollers are independent of the paper take-up roller. At this time, the
depression cam attached to the paper take-up roller depresses the paper lift-up plate to prevent the
feeding of a second sheet.
Lower Fusing
Figure 2-3. Paper Feeding from the Multi-Purpose Tray
Rev. A
2-3