Duplex Printing - Konica Minolta Bizhub 20p Service Manual

3.2.5 Duplex printing

After the paper exits from the eject roller ASSY 2 with the front of sheet printed, the eject
roller ASSY 2 rotates conversely and feeds the paper to the duplex unit, where the paper
skew is adjusted.
Afterwards, the paper is ejected from the duplex unit to the path through the regist roller and
the transfer roller to the transfer block in the drum unit again for process of printing on the
back of sheet.
Eject roller ASSY 2
Back cover
Rear chute
ASSY
Eject roller
ASSY 1
Pressure
roller
Duplex unit
Note :
• The duplex printing prints the 1st page after printing the 2nd page first.
For example, when prints the four pages, prints in order to 2nd page to 1st page to
4th page to 3rd page.
Heat roller
Transfer roller
Regist actuator rear
Fig. 2-10
2-9
Exposure drum
Regist roller
Pinch roller
Regist actuator
front
Confidential