Developing Control - Canon imageRUNNER ADVANCE C5500 Series Service Manual

Developing Control

In this machine, charging is performed on the Developing Cylinder the same as the Charging Roller, and imaging is performed
using a 2-component developing method for all colors.
The bias applied to the cylinder is calculated from the data calculated based on the absolute moisture content obtained from the
Environment Sensor.
Developing DC bias:
The setting value of the voltage for charging the Developing Cylinder is calculated from the environment data, like the data
used for setting the charging bias.
Developing AC bias:
Developing performance and development charge injection performance are affected by the humidity and absolute moisture
content.
For example, in high humidity environments, charge injection performance is poor but developing performance is good. In
contrast, in low humidity environments, charge injection performance is good but developing performance is poor. Developing
performance and charge injection performance are affected by the voltage (Vpp). Specifically, when Vpp decreases,
developing performance becomes worse and charge injection performance becomes better.
Related Service Mode
Execution of the initial installation mode of the Developing Assembly (each color):
COPIER > Function > INSTALL > INISET-Y
COPIER > Function > INSTALL > INISET-M
COPIER > Function > INSTALL > INISET-C
COPIER > Function > INSTALL > INISET-K
COPIER > Function > INSTALL > INISET-4
Stirring of each color developer:
COPIER > Function > INSTALL > STIR-4
Setting of the Developing Cylinder peripheral speed ratio:
COPIER > Option > IMG-DEV > SL-RATIO
Display of the each color developing DC bias:
COPIER >Display > DENS > DEV-DC-Y
COPIER >Display > DENS > DEV-DC-M
COPIER >Display > DENS > DEV-DC-C
COPIER >Display > DENS > DEV-DC-K
Adjustment of the developing AC bias Vpp:
COPIER > Option > IMG-DEV > ADJ-VPP
Developing Cylinder
UN1
DC Controller PCB
UN18
Secondary Transfer
High-Voltage PCB
82
2. Technology