Xerox Phaser 6120

Print Engine Theory of Operation
Phaser® 6120 Color Laser Printer Service Manual
7-54
Image Stabilization Control (Density) and Output Process
To ensure that a stabilized output image is produced at all times, the following image
stabilization controls are provided
.
Leak Detection Control
For the clearance between the Photo Conductor and Developing Roller, an optimum
developing bias voltage is established that does not result in a light image or uneven density.
Purpose Control Detection
To ensure stabilized
transfer
output
ATVC
■ See the Transfer section on
page 7-22.
Temperature/Humidity Sensor (HS1)
To ensure stabilized image
density; to ensure good
tone reproduction
AIDC control (Density)
■ Leak detection control
■ AIDC intensity control
■ Reflectance measurement control
■ Control of the maximum amount
of toner sticking
■ Laser intensity adjustment control
■ Correction control
AIDC Sensor (AIDC)
Temperature/Humidity Sensor (HS1)
4139to2098e0
IN
OUT
1st Transfer Roller
2nd Transfer Roller
ATVC
Grid BiasDeveloping Bias
Developing
Charging
PC
AIDC Sensor
Temperature/
humidity Sensor
AIDC Control