Epson EPL N2700, Руководство по обслуживанию

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EPL-N2700 Optional Units Revision A
Operating principles Double Cassette Unit 164
6.1.2.4 Paper Near Empty Detection
1. A paper-near-empty condition is detected through the detection of
the height of the Paper Lifting Plate.
2. As the paper stack is consumed during a print cycle, the Paper
Lifting Plate of the cassette is gradually raised by the tension of the
Paper Lifting Springs. When the Paper Near Empty Sensor is then
unblocked, the sensor determines that it is a paper-near-empty
condition (the number of sheets of paper (80 g/m
2
) still available for
use: 50 ±30).
3. The paper out error is indicated on the LCD panel. LED then starts
blinking.
NOTE: Since the amount of paper still available for use varies while
a paper take-up sequence is in progress, detection is made
at a timing when the Paper Take-up Roller is in the retracted
position.
Figure 6-7. Paper Near Empty Detection Mechanism
6.1.2.5 Paper Empty Detection
The paper empty detection mechanism is the same as for the Cassette
1 of the printer main body. (See EPL-N2700 Service Manual / Chapter
2.)
Paper Near Empty Sensor
Paper Lifting Plate
Actuator