Epson EPL-5800, Service Manual

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EPSON EPL-5800 Revision B
Operating Principles Operating Principles of Mechanism 54
2.1.6 Transfer Process
2.1.6.1 Overview
!
During the image transfer process the image created on the OPC drum in the
development process is transferred to the paper.
!
Transfer method is not the corona transfer but the roller transfer method by the
transfer roller.
!
Roller transfer method has low rate of ozone occurrence by corona discharge, and
chances for dislocating the transferred image is very small because the paper
passes between the drum and the transfer roller all through during printing.
!
The reversed bias is charged on the transfer roller when cleaning the transfer roller
before printing.
!
Leftover electric potential on the paper is removed by the discharge needle.
Figure 2-10. Transfer Mechanism
4121s034
Paper
OPC Drum
Transfer Roller
Discharge Needle
OPC
Drum
Transfer Roll
4121s035
Paper
Tra
n
sfer
Bias
(3
K
V
)
Rev
ersed Bia
s
(-1
K
V
)