Epson ActionLaser 1600, Руководство по обслуживанию

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Principles of Operation
P a p e r F e e d i n g
There are two 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 optional
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 from the LED to
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 roller rotates and
feeds the first page. The paper take-up roller stops after one rotation. Unlike the
EPL-7000/7500 and EPL-8000, which have a synchronizing roller, the
ActionLaser 1600 has no synchronizing roller installed. The timing to align the
leading edge of the page with image is detected by the paper take-up sensor.
When a page is on top of the paper take-up sensor, the detection lever is lowered,
allowing light from the LED to reach the photo-transistor. This causes the signal
to go HIGH, informing the engine driver that paper has been detected.
The paper exit sensor is located beyond the fising 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 signal to go HIGH,
informing the engine driver that paper has been delivered.
EPSON ActionLaser 1600 Service Manual 2-7