Canon iR6570 series, Portable Manual

Page: 66 / 320

Chapter 2
2-32
2.5 Image Formation System
2.5.1 Outline of the
Charging Wire
0009-5695
iR5570 / iR6570
The photosensitive drum is surrounded by three
charging wires (for primary charging, pre-transfer,
and transfer/separation).
These charging wires are newly adopted brown wires
(0.06 mm in diameter). Do not use a gold-plated wire,
which has been used in the past; otherwise, image
faults may occur.
Further, be sure to use a strengthened polishing pad
(in a blue holder) as the cleaning pad for the primary
charging assembly and the transfer charging
assembly.
2.5.2 Routing the Charging
Wire
0009-5696
iR5570 / iR6570
All charging wires (except the grid wire) are routed
more or less in the same way; the following cites the
primary charging assembly:
1) Remove the shielding plate (left, right) of the
charging assembly. To prevent deformation (slack)
in the primary charging assembly, be sure to work
separately for the left shielding plate and the right
shielding plate (i.e., do not loosen the mounting
screws [1] of both shielding plates at the same
time).
2) Remove the wire cleaner.
F-2-37
For other charging assemblies, remove the two lids.
3) Free a length of about 5 cm of charging wire from
the charging wire reel (0.06 mm in diameter), and
form a loop at its end with a diameter of about 2
mm.
MEMO:
To form a loop, wind the charging wire around a hex
key once, and turn the hex key three to four times;
then, twist the charg-ing wire.
4) Cut the end (excess) of the twisted charging wire.
5) Hook the loop on the stud.
F-2-38
6) At the rear, hook the charging wire on the charging
wire positioner; then, hook the charging wire
tension spring on the charging wire where indicated
to the following figure.
F-2-39
7) Cut off the excess of the charging wire with
nippers.
8) Pick the end of the charging wire tension spring
with tweezers, and hook it on the charging power
supply electrode.
In the case of the pre-transfer charging assembly,
hook the spring on the pin at the front.
[1]
Charging electrode
(rear)
(front) Charging wire
Reel
Stud