Theory of Operation Ver. 1.0 Sep. 2008
20. Image stabilization control
97
bizhub C200
Composition/Operation
20. Image stabilization control
20.1 Overview
• The machine provides the following image stabilization control to ensure stabilized copy
image.
* An explanation is given of the control for each section.
Purpose
Control
Detection means
To stabilize image density
To stabilize gradation
• IDC registration sensor adjust-
ment control
• Max. density adjustment control
• LD intensity adjustment control
* Registration control (color shift
correction)
• Gamma correction control
IDC registration sensors
Temperature/humidity sensor
To stabilize toner density
* TCR control (Y,M,C,K)
TCR sensor
To stabilize image transfer
* Image transfer output control
• 2nd image transfer ATVC
Temperature/humidity sensor
Image Density
Gradation control
Gamma correction data
Gradation correction table
IN
OUT
OUT/IN
2nd image
transfer roller
Toner supply motor
Toner repleni-
shing control
TCR sensor
Developing bias Vdc
Grid voltage Vg
IDC registration sensor
Transfer ATVC control
Temperature/
humidity sensor
D MAX density
Background voltage margin
ATDC toner supply
· To be set on control panel
PC
drum/
Y
PC
drum/
M
PC
drum/
C
PC
drum/
K
A02ET2E510AA
Y109670-2 Theory of Operation