Theory of Operation 2-11
The Color Registration Sensors are used to measure the amount of misalignment
based on the position of the color patches in relation to the black toner patch that
precedes them. According to this measurement, the printer determines the correct
value and automatically adjusts color registration in the main scanning, sub-scanning,
and diagonal directions.
s7400-041
Belt Running Direction
C
Color Registration Sensor
Belt Running Direction
Cleaning Blade
Cleaning Blade
(Transfer Unit as seen from below)
Color Registration Front Sensor
Color Registration Rear Sensor
Transfer Belt
C
M
M
Y
Y
K
LED Head
Imaging Unit
Drum
Transfer Unit
Belt
K