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Technical Explanation > Image Formation System > Controls > Transfer/Separation
Technical Explanation > Image Formation System > Controls > Transfer/Separation
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Primary Transfer Control
Primary Transfer ATVC
Purpose: To set the transfer voltage required to obtain the target transfer current value in
order to prevent transfer failure due to environmental changes
Control description:
1) Current value of the primary transfer DC bias is detected.
2) Optimal target current value is determined based on temperature/humidity data of the
Environment Sensor (UN27).
3) The primary transfer DC bias to be applied to the Primary Transfer Roller is determined.
Control timing
Adjustment timing
Conditions
Automatic adjustment
by the output of a
specific number of prints
When a job starts
For each 100 accumulated images
When sudden environmental changes are
detected by the Environment Sensor
At paper interval
For each 100 accumulated images
Control at job completion For each 500 accumulated images (only in high
temperature and high humidity environment)
For each 1000 accumulated images
At startup
At power-on
At normal startup
If 8 hours or more have elapsed in high-speed
startup mode
At recovery from sleep
mode
If 8 hours or more have elapsed in sleep mode
Automatic adjustment
by switching modes
When switching to a color
job from a B&W job
100 or more accumulated images of color jobs
When sudden environmental changes are
detected by the Environment Sensor from when
the previous ATVC was executed
Automatic adjustment
by replacement
Drum Unit replacement
When a new Drum Unit is inserted
Replace the Developing
Unit.
When INISET-Y/M/C/K/4C is executed in
service mode
At initial installation
At power-on
At initial installation
Related Service Mode:
COPIER > FUNCTION > MISC-P > 1ATVC-EX : Exe of primary transfer ATVC control
Related Alarm Code:
30-0025 : A voltage value below the threshold value was detected with primary transfer
ATVC control for yellow
30-0026 : A voltage value below the threshold value was detected with primary transfer
ATVC control for magenta
30-0027 : A voltage value below the threshold value was detected with primary transfer
ATVC control for cyan
30-0028 : A voltage value below the threshold value was detected with primary transfer
ATVC control for black
T-2-24
Primary transfer bias control
Purpose: To apply current to the Primary Transfer Roller
The primary transfer bias is divided into each color (Y/M/C/Bk), and is generated by the
Primary Transfer High Voltage PCB (UN02) and applied to the Primary Transfer Roller.
The primary transfer bias value is determined by the primary transfer ATVC control.
ON and OFF of the primary transfer bias can be switched by color, and it is possible to turn
OFF the bias of the color which will not be used.
NOTE:
The ATVC control secures transfer performance that is not affected by change in
resistance caused by the environment as well as deterioration of the Primary Transfer
Roller and is executed respectively to the primary transfer bias of each color.