Construction - Toshiba e-STUDIO281c Service Manual

15.4 Construction

Image quality sensor:
(S17)
Image quality sensor:
D/A converter:
Laser optical system:
A/D converter:
Image forming process: Performs charging, laser exposing and developing processes.
CPU:
Various image forming
conditions
e-STUDIO281c/351c/451c IMAGE QUALITY CONTROL
Projects the amount of light on the transfer belt and outputs the voltage
corresponding to the reflected light amount from the transfer belt or the toner
image on the transfer belt.
Projects the amount of light on the transfer belt and outputs the voltage
Converts light source amount signal into the voltage to the sensor.
Performs test pattern exposure (for toner image formation).
Converts the output voltage from the sensor into digital values and outputs
them to the CPU.
Performs steps [1] to [10] described previously.
Image forming process
Laser optical system
Transfer belt
D/A A/D
Light source
amount signal
CPU
Fig.15-2
15 - 4
Image quality y
sensor
Reflected light
amount signal
June 2005 © TOSHIBA TEC