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Theory of Operation Ver. 8.0 Jun. 2008
22. Image stabilization control
22.1 Overview
• The machine provides the following image stabilization control to ensure stabilized copy
image.
Purpose
To stabilize image density
To stabilize gradation
To stabilize toner density
To stabilize image transfer
* An explanation is given of the control for each section.
Toner supply motor
Color skew
correction
PH temperature
sensor
TCR sensor
Toner replenishing
control
OUT/IN
·
To be set on control panel
D MAX density
Background voltage margin
ATDC toner supply
Y107522-3
Control
• IDC registration sensor adjust-
ment control
• Max. density adjustment control
• LD intensity adjustment control
• Registration control (color shift
correction)
• Gamma correction control
* TCR control (Y,M,C,K)
* Image transfer output control
2nd image transfer ATVC
PC
PC
drum/
drum/
M
Y
G3/M
G3/Y
Developing bias Vdc
Image density
Gradation control
Gamma correction data
Gradation correction table
Temperature/
humidity sensor
Theory of Operation
22. Image stabilization control
Control means
IDC registration sensor
Temperature/humidity sensor
PH temperature sensor
TCR sensor
Temperature/humidity sensor
2nd Image transfer roller
PC
PC
drum/
drum/
C
K
G3/C
Grid voltage Vg
IDC sensor
Transfer ATVC control
IN
OUT
A00JT2E518DA
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