Diagnostic aids 3-43
7541-03x
Duplexing
If a page is two-sided, a signal is sent to the Printer Controller Board once the trailing edge of the paper passes
the Fuser Exit Sensor. The leading edge of the paper partially feeds from the Exit Rolls and then reverses
direction and feeds into the Duplex Unit. This method of re-feed is called a “Peek-a-boo”.
The Duplex Entry Rollers pass the paper down to the Duplex Transport Rollers along the right side of the printer.
Once the paper reaches the bottom, the Duplex Exit/MPF detection lever senses the leading edge of the media
at the Duplex Exit Roller and it engages the Duplex re-feed clutch to transport the sheet of paper into the EP
paper path.
Note: Once the media reaches the Duplex Exit/MPF detection lever, it shares the same paper path as the
MPF.
Transfer roll
Paper
Paper
Paper
MPF Registration roller
Duplex entry roller
Duplex clutch
Lower duplex transport roll
Duplex / MPF sensor actuator
Timing belt
Timing belt
Timing belt
Exit roll
Fuser exit roll
Paper exit sensor
Std Registration roller
Duplex exit roll
ᓙᯏᬌ⍮㩤㩔㩨㨺
Registration
Sensor
Paper
(Delivery roll)
To Next Page
Loading...
