Id Sensors - Ricoh B132 Service Manual

PROCESS CONTROL

ID Sensors

Rear
ITB (Image Transfer Belt)
K
!
40 mm
40 mm
"
Y C M
Front
150 mm
B132D902.WMF
There are two ID sensors above the surface of the ITB:
• The black ID sensor !
(rear) detects the black ID sensor pattern (K).
• The color ID sensor "
(front) detects the three color ID sensor patterns (M, C, Y).
B132D903.BMP
B132D904.BMP
Black ID Sensor Color ID Sensor
The black ID sensor is a direct reflection sensor.
The color ID sensor is a combination of a direct reflection sensor and a diffused
reflection sensor. This combination of a direct reflection sensor pair and an
additional diffused reflection sensor achieves more accurate readings for M, C, Y
colors.
SM 6-77 B132/B200