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Theory of Operation Ver. 1.0 Sep. 2008
20. Image stabilization control
20.1 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
Toner repleni-
shing control
OUT/IN
· To be set on control panel
D MAX density
Background voltage margin
ATDC toner supply
Y109670-2
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/
Y
M
TCR sensor
Developing bias Vdc
Image Density
Gradation control
Gamma correction data
Gradation correction table
Temperature/
humidity sensor
Theory of Operation
20. Image stabilization control
Detection means
IDC registration sensors
Temperature/humidity sensor
TCR sensor
Temperature/humidity sensor
PC
PC
drum/
drum/
C
K
Grid voltage Vg
IDC registration sensor
Transfer ATVC control
IN
OUT
2nd image
transfer roller
A02ET2E510AA
97
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