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PCU (PHOTOCONDUCTOR UNIT)
- Toner Density Sensor -
(Add Toner)
Toner density
A193D522.wmf
Developer consists of carrier particles (ferrite) and toner particles (resin and
pigment). Inside the development unit, developer passes through a magnetic
field created by coils inside the toner density sensor, When the toner
concentration changes, the voltage output of the sensor changes accordingly.
The output from the sensor (V
) is checked before every copy. The machine
T
tries to keep V
constant by varying the toner supply, as shown in the flow
T
chart on the previous page.
SM
2-35
(A193)
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