Epson AcuLaser C9200N Service Manual page 50

EPSON AcuLaser C9200N
DEVELOPMENT SYSTEM
The machine employs the two-component non-contact development system to
achieve even finer reproduction.
Developing Roller
Figure 2-24. Development system
OPERATING PRINCIPLES
Downloaded from www.Manualslib.com
4036ma2013c0
Operating Principle of Main Unit Mechanism
manuals search engine
TCR SENSOR CONTROL
The TCR Sensor detects toner-to-carrier ratio (T/C) of the developer. In the
Mechanical Control Board, the amount of the toner supplied to the
Developing Unit is determined by the detected ratio. Magnetic Sensor is
mounted on the underside of the Developing Sections.
The magnetic permeability (powder density) of the carrier in the developer
is measured to determine the T/C.
A polyester film is provided for the Conveying Screw portion to scrape
toner off the surface of the TCR Sensor.
The TCR Sensor is integrated with the Photoconductor Unit. When the
TCR Sensor is breakdown, the entire Photoconductor Unit must be
PC Drum
replaced.
Polyester
film
Magnetic TCR Sensor
TCR Sensor
4038to503c0
Figure 2-25. TCR Sensor
Revision D
4038T2C031AA
50
Confidential