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ENWW Automatic duplex unit (ADU) 97
MFP unit explanation
*2 Image position correction
A leading edge PS (PS43) and paper
mis-centering PS (PS70) are provided
at the exit of the registration roller, thus
enhancing the positional accuracy of the
copy image.
The paper position information detected
by PS43 and PS70 is processed by the
image processor to correct the image
write position in such a manner that the
document (scanned image) position
match the copy paper position.
The leading edge PS (PS43) is used to
correct the write position in the
sub-scanning direction, and the
mis-centering PS (PS70) is used to
correct the write position in the main
scanning direction.
*3 Second paper feed auxiliary
mechanism
The distance between the registration
roller and the transfer and separation
corona unit is made long to achieve the
time required for correcting the image
position. To assist conveyance of paper
between the registration roller and the
image transfer and separation corona
unit, a pre-transfer roller is provided just
before the transfer and separation
corona unit.
*4 Conveyance section paper suction
mechanism
A paper suction duct is provided in the
middle of the conveyance section and is
led to the conveyance suction fan (FM3)
installed in the ADU. To improve
transportability of the paper that passes
Pre-transfer roller
Registration roller
Transfer and separation corona unit
Leading edge PS
(PS43) (rear)
Paper mis-
centering PS
(PS70) (front)