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MX-M700N DEVELOPING SECTION L – 2
2. Operational descriptions
A. Outline
In this section, toner is attached to electrostatic latent images
formed by laser beams on the OPC drum, making visible images.
B. Description
Electrostatic latent images formed on the OPC drum by the LED
(writing) unit (LED image light) are converted into visible images by
toner.
Toner in the developing unit is stirred by the mixing roller.
When toner is stirred, it is negatively charged by mechanical fric-
tion.
The developing bias voltage (negative) is applied to the developing
roller.
Negatively charged toner is attracted and attached to the area on
the OPC drum where negative voltage is reduced by exposure.
On the other hand, the negative voltage at an area where exposure
is not made is higher than the developing bias voltage, and toner is
not attached.
3. Disassembly and assembly
A. Developer tank section
(1)
Developing unit
1)
Take out the developing tank.
Aluminum
layer
CGL
CTL
-500v
+150v
Drum
Cleaning
mode
Developing
mode
No.
Unit
No.
Parts
Mainte
nance
(1)
Developing unit
a
Developer
▲
b
DV seal
▲
c
MG holder F and R
{
d
Side seal F and R
▲
e
Toner density sensor
(1)-c
(1)-c
(1)-e
(1)-d
(1)-d
(1)-a
(1)
(1)-b
2
1