continues rotating counterclockwise to drive the leading edge of the media through the preset distance
from S6 to the scan zone.
11. When the media arrives, the scanner scans and retrieves data. (S6 is not interrupted when the trailing
edge of the media passes it.) 12. The firmware sequence registers the trailing edge of the media position.
13. The feed motor continues rotating counterclockwise to drive the media trailing edge through the
preset distance from S6 to the scan zone. 14. Then, the scanner finishes scanning and retrieving data
15. The solenoid activates when the trailing edge of the media passes the scan zone by a predetermined,
constant distance from the prescan sensor. This allows the exit pinch rollers to clamp the exit drive roller
to drive the remaining media out of the scan zone and pass the diverter. 16. The feed motor rotates
clockwise to drive media in a reverse direction. This moves media into the duplex path, the deskew drive
roller, and the deskew pinch rollers. 17. A preset amount of overdrive of media into the nip point is carried
out to create a buckle for pick skew correction. 18. The solenoid activates when the trailing edge of
media passes the scan zone. This allows the exit pinch rollers to clamp the exit drive roller to drive the
remaining media out of the scan zone and pass the diverter.
19. The continual triggering of sensor media presence (S4) allows the firmware to recognize that there
are pages on the input tray. The S5 is uninterrupted when the trailing edge of the media passes it. 20.
Then, the pick motor rotates counterclockwise to drive the pick roller to pick media.
End of a scan job operation
After performing the steps listed in multifeed operation, S4 is uninterrupted when no media exists in the
input tray. The motor feed rotates clockwise to raise the pick roller. When the pick roller assembly rises,
the media load stoppers crank down.
Paper pick and separation operation
The top sheet of media is picked by the pick roller, and an angled ramp profile is required to function as
a barrier to prevent the remaining lower sheets from being picked together with the top sheet. If more
than one sheet of media is picked, the separator roller and separator pad work together to separate the
lower sheet of media, allowing only the top sheet into the ADF.
ENWW ADF 153
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