Atvc Control - Canon imageRUNNER ADVANCE C5045 Series Service Manual

2

ATVC control

This control prevents transfer failure due to environmental change or deterioration of the
primary transfer roller or the secondary transfer roller
•
Primary transfer ATVC
Execution timing
1) When the power is turned ON
2) When replacing with a new drum unit
3) At recovery from sleep mode
4) At post-rotation after the total reaches 500 prints
5) When the environment is changed
Catuion:
The total print is counted separately between the color mode and the Bk mode. This
control is executed when the counter of either mode reaches the specified number.
Control description
1) Monitoring current value of the primary transfer DC bias is detected
2) Optimal primary charging current value is determined based on the temperature/
humidity data of Environment sensor 1.
3) The primary transfer DC bias is determined to apply to the primary transfer roller
2
•
Secondary transfer ATVC
Execution timing
1) When the power is turned ON
2) At every print job
Control description
1) Monitoring current value of the secondary transfer DC bias is detected
2) Optimal primary charging current value is determined based on the temperature/
humidity data of environment sensor 2.
3) The secondary transfer DC bias is determined to apply to the secondary transfer roller
Primary transfer
roller
2-68
Primary transfer DC Bias
Current monitoring
signal
Secondary transfer
outer roller
Current monitoring
signal
Secondary transfer DC controller(UN1)
DC Bias
Environment
sensor1
(UN22)
Environment
sensor2
(UN50)
F-2-110 F-2-110
2-68